Home

pc deep tine-0

Contents

1. Figure 9 1 Crank arm 2 used 3 Crank arm 5 used 4 Crank arm 3 used 2 Crank arm 2 used The ProCore SR54 coring crankshaft uses four 4 dif ferent crank arms For identification purposes the crank arms and crankshaft timing are shown in Figure 9 Refer to your Parts Catalog to identify part numbers for crank shaft components Coring Head SR54 amp SR70 Page 4 12 ProCore SR Series Coring Crankshaft SR70 PROCORE SR70 CORING CRANKSHAFT VIEWED FROM REAR Figure 10 1 Crank arm 2 used 2 Crank arm 13 used 3 Crank arm 1 used The ProCore SR70 coring crankshaft uses three 3 dif ferent crank arms For identification purposes the crank arms and crankshaft timing are shown in Figure 10 Re fer to your Parts Catalog to identify part numbers for crankshaft components sR oc IA ol E o op ProCore SR Series Page 4 13 Coring Head SR54 amp SR70 Coring Crankshaft Bearing Housings 950 ft Ib 1288 N m ANTISEIZE LUBRICANT A 950 ft Ib 1288 N m 950 ft Ib 1288 N m ANTISEIZE LUBRICANT 950 ft lb 1288 N m ANTISEIZE PROCORE SR54 SHOWN LUBRICANT Figure 11 1 Lock nut 6 Crank arm 11 Crank shaft 2 Crank pin 7 Retaining ring 12 Clipped wash
2. 3 Assemble all linkage arm components using Figures 5 and 6 as guides 1 Spring assembly 2 Head bumper 3 Lock nut 4 Flange bushing 5 Spring spool 6 Bolt 7 Cap screw 8 Lock washer 1 Hinge housing 2 Bearing 3 Retaining ring ProCore SR Series Page 4 9 Figure 6 9 Set screw 10 Head adapter 11 Head spacer 12 Cap screw 13 Head bumper 14 Tube 15 Head spacer 16 Linkage arm Figure 7 4 Inner bushing 5 Outer bushing Coring Head SR54 amp SR70 vR o ME IA ol z fo OG Connecting Rods 950 ft lb 1288 N m PROCORE SR54 SHOWN ANTISEIZE LUBRICANT A ae O oe N PS Figure 8 1 Crank pin 6 Outer bushing 11 Linkage arm 2 Cap screw 7 Ball bearing 12 Lock nut 3 Outer bushing 8 Retaining ring 13 Clipped washer 4 Retaining ring 9 Connecting rod 14 Hex nut 5 Ball bearing 10 Bearing spacer IMPORTANT Before disassembling the coring crankshaft label location and orientation of compo nents that are to be removed Correct component location and orientation are necessary for proper aerator operation NOTE The connecting rod assemblies for ProCore SR54 and SR70 aerators are very similar The ProCore SR54 is shown in Figure 8 Removal Fig 8 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor pa
3. 12 303 63 64 0 984375 25 003 1 2 0 5000 12 700 1 1 000 25 400 1 mm 0 03937 in 0 001 in 0 0254 mm U S to Metric Conversions To Convert Into Multiply By Linear Miles Kilometers 1 609 Measurement Yards Meters 0 9144 Feet Meters 0 3048 Feet Centimeters 30 48 Inches Meters 0 0254 Inches Centimeters 2 54 Inches Millimeters 25 4 Area Square Miles Square Kilometers 2 59 Square Feet Square Meters 0 0929 Square Inches Square Centimeters 6 452 Acre Hectare 0 4047 Volume Cubic Yards Cubic Meters 0 7646 Cubic Feet Cubic Meters 0 02832 Cubic Inches Cubic Centimeters 16 39 Weight Tons Short Metric Tons 0 9078 Pounds Kilograms 0 4536 Ounces Avdp Grams 28 3495 Pressure Pounds Sa In Kilopascal 6 895 Pounds Sa In Bar 0 069 Work Foot pounds Newton Meters 1 356 Foot pounds Kilogram Meters 0 1383 Inch pounds Kilogram Centimeters 1 192144 Liquid Volume Quarts Liters 0 9463 Gallons Liters 3 785 Liquid Flow Gallons Minute Liters Minute 3 785 Temperature Fahrenheit Celsius 1 Subract 32 2 Multiply by 5 9 Product Records and Maintenance Page 2 2 ProCore SR Series Torque Specifications Recommended fastener torque values are listed in the following tables For critical applications as determined by Toro either the recommended torque or a torque that is unique to the application is clearly identified and spe cified in this Service Manual These Torque Specificatio
4. Preface The purpose of this publication is to provide the service technician with information for troubleshooting testing and repair of major systems and components on the ProCore SR series deep tine aerators models SR48 SR54 SR54 S SR70 SR70 S SR72 and SR75 REFER TO THE OPERATOR S MANUAL FOR OPER ATING MAINTENANCE AND ADJUSTMENT INSTRUCTIONS For reference insert a copy of the Operator s Manuals and Parts Catalog for your machine into Chapter 2 of this service manual Additional copies of the Operator s Manuals and Parts Catalog are avail able on the internet at www Toro com The Toro Company reserves the right to change product specifications or this publication without notice Part No 10174SL Service Manual ProCore SR Series This safety symbol means DANGER WARNING or CAUTION PERSONAL SAFETY INSTRUC TION When you see this symbol carefully read the instructions that follow Failure to obey the instructions may result in personal injury NOTE A NOTE will give general information about the correct operation maintenance service testing or re pair of the machine IMPORTANT The IMPORTANT notice will give im portant instructions which must be followed to pre vent damage to systems or components on the machine The Toro Company 2011 This page is intentionally blank ProCore SR Series Table Of Contents Chapter 1 Safety Safety Instructions 0 00 ed eee
5. Cotter pin 9 Lynch pin 5 Spacer Chassis Covers ProCore SR54 SR54 S SR70 and SR70 S PROCORE SR54 SHOWN 90000009 NANIO co 99000 OO Figure 17 1 Rear hood 7 Lock washer 6 used 12 Flat washer 10 used 2 Cap screw 2 used 8 Foam strip 2 used 13 Lock nut 4 used 3 Latch 2 used 9 Spacer 2 used per screen 14 Cap screw 2 used 4 Cap screw 4 used 10 Cap screw 4 used 15 Socket head screw 4 used 5 RH screen 11 Screen clip 2 used 16 Lock nut 4 used 6 LH screen NOTE The covers used on the ProCore SR54 SR54 S SR70 and SR70 S are very similar The pro cedure for removal and installation of the covers is the same on these models The ProCore SR54 is shown in Figure 17 Chassis Page 3 16 ProCore SR Series Removal Fig 17 Installation Fig 17 1 Position aerator on a firm level surface If aerator is 1 attached to tractor disengage PTO apply tractor park tac ing brake stop engine and remove key from the ignition switch 2 2 If necessary remove rear hood A Unlatch rear hood B Remove two 2 cap screws item 2 that secure rear hood to frame C Remove rear hood from machine 3 To remove front screen item 5 or 6 A Unlatch raise and support rear hood if it is at tached to frame 3 Make sure that screen clip item 11 is loosely at hed to frame To install front screen item 5 or 6 A Position front screen to ma
6. spring scale to the string end B Once the input shaft is rotating the resistance to continue to rotate the shaft should be from 2 to 3 in Ibs 0 23 to 0 34 N m Repeat this process a few times until a consistent resistance is determined C If rotating resistance is below 2 in lb 0 23 N m add additional shim s behind the retaining ring item 4 If resistance is above 3 in Ib 0 34 N m remove shim s from behind the retaining ring D Retest rotating resistance after adding or remov ing shims E Continue shim placement until input shaft rotat ing resistance is consistently from 2 to 3 in Ibs 0 23 to 0 34 N m 3 Install output shaft assembly into gearbox housing A Press ball bearing item 8 onto output shaft Make sure that bearing is pressed fully to shaft shoul der B Position bevel gear item 11 and tapered bearing cone item 5 inside gearbox housing Make sure that bevel gear teeth mesh properly with gear on in put shaft Slide output shaft through ball bearing opening of housing bevel gear bearing cone and then tapered bearing opening of housing C Insert tapered bearing cup item 5 into bearing bore of gearbox housing D Install the removed shim s item 3 and retaining ring item 2 into gearbox ball bearing bore Make sure that retaining ring is fully seated in housing groove E Install the removed shim s item 3 and retaining ring item 2 into gearbox tapered bearing bore Make su
7. 3 Chassis 3 Drain lubricant from gearbox 4 Disconnect PTO driveshaft from gearbox input shaft see PTO Driveshaft Removal in the Service and Re pairs section of Chapter 3 Chassis 5 Remove four 4 cap screws lock washers and flat washers that secure driveshaft shield item 20 to gear box Remove shield 6 Remove drive chain sprocket and sprocket hub from both gearbox output shafts see Coring Head Drive Dis assembly in this section 7 Remove saddle bolts item 10 that secure gearbox flanges to frame 8 Remove four 4 cap screws and lock washers that secure gearbox to aerator frame To prevent personal injury make sure that gear box is supported as it is removed from the ma chine Gearbox weighs approximately 220 pounds 100 kg NOTE For gearbox disassembly and assembly infor mation refer to the Service and Repairs section of Chapter 7 Gearbox Service Installation Fig 18 IMPORTANT If a gearbox is incorrectly assembled or installed e g output shaft installed into gearbox in reverse direction or gearbox placed on frame up side down there is a possibility that gearbox out put shaft rotation will be incorrect for proper aerator operation After placing the gearbox on the frame make sure that rotation of the input shaft results in the correct output shaft rotation direction Figure 19 shows correct shaft rotation direction for the gear box shafts If rotation is incorrect check gearb
8. Bearing housing 4 bolt 4 Grease fitting NOTE Drop speed can be adjusted on the tractor Re fer to the Tractor Operator s Manual for additional infor mation 3 Start engine on tractor Slowly lower aerator to posi tion aerator frame to roller assembly Stop tractor engine and remove key from the ignition switch 4 Align holes in flange bearings with holes in aerator frame Make sure that bearing grease fittings point to front of aerator Secure both bearings to frame with four 4 cap screws and lock nuts 5 Check that roller is free to rotate and no binding ex ists Center roller between bearings 6 Apply Loctite 242 or equivalent to threads of bear ing set screws Tighten two 2 set screws to secure each bearing locking collar to roller shaft 7 Lubricate grease fittings on bearings ProCore SR Series Page 3 7 Chassis PTO Driveshaft PROCORE SR54 SHOWN Figure 8 1 Gearbox 2 Driveshaft shield access panel 3 PTO driveshaft shield The friction clutch on the PTO driveshaft may become hot during use To prevent personal in jury make sure that clutch has cooled before performing any service on the driveshaft Removal Fig 8 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Unhook drivesh
9. Drive chains should have 1 2 12 7 mm total deflection when properly adjusted D Adjust idler sprocket location with bolt item 16 so that chain has 1 2 12 7 mm total deflection at mid span between sprockets Make sure that jam nut item 3 and bolt item 16 are fully tightened after chain adjustment is completed 6 Block crankshaft to prevent it from rotating Install and adjust second drive chain using procedure listed in step 5 above 7 After assembly rotate coring crankshaft by hand to make sure that no binding occurs 8 Lower and secure rear hood Figure 17 1 Drive chain 4 Gearbox 2 Bolt 5 Crankshaft sprocket 3 Hex nut 6 Idler sprocket Coring Head SR48 amp SR72 ge i lt Da i fe S T N o N o oe q aal o Coring Head Drive Sprockets Figure 18 1 Idler shaft 10 Saddle bolt 10 used 2 Master link assembly 2 used 11 Lock washer 4 used 3 Jam nut grooved 12 Drive chain 2 used 4 Jam nut 13 Lock nut 10 used 5 Idler sprocket 14 Lock washer 6 Lock nut 15 Gearbox assembly 7 Sprocket hub 2 used 16 Bolt 8 Cap screw 4 used 17 Hex nut 9 Sprocket 2 used NOTE The drive sprocket assemblies for ProCore SR48 and SR72 series aerators are very similar The ProCore SR72 is shown in Figure 18 Coring Head SR48 amp SR72 Page 5 20 PTO driveshaft Square key Dri
10. If coring crankshaft sprocket was removed secure sprocket to crank arm and install coring crankshaft bear ing housing see Coring Crankshaft Bearing Housing Installation in this section 2 If sprockets were removed from gearbox shaft install sprockets to gearbox shaft see Coring Head Drive Sprockets Assembly in this section 3 If idler assembly parts were removed from frame install idler components using Figure 14 as a guide Do not fully tighten inner jam nut item 4 at this time 4 Using a suitable straight edge check that alignment between gearbox coring crankshaft and idler sprockets is correct If needed readjust sprocket location on gear box shaft to align sprockets IMPORTANT When installing drive chains install and properly tension one of the drive chains Then install second chain 5 If both drive chains were removed install first drive chain A Position drive chain to gearbox sprocket pull low er run of chain tight and align with coring crankshaft sprocket teeth If necessary slightly rotate coring crankshaft so that chain remains tight when aligned with sprocket teeth Route chain under idler sprocket and back to gearbox sprocket Fig 15 Do not allow lower run of chain to have excessive slack B Apply grease to master link O rings Place two 2 O rings on master link pins and install into ends of drive chain Place final two 2 O rings on master link pins and install side plate C Install
11. PTO power to aerator and lower aera tor to the ground B Apply parking brake on tractor Stop engine and remove key from ignition switch C Wait for all moving parts to stop before leaving the tractor 7 Before disconnecting aerator from tractor install storage stand to aerator frame and park aerator ona hard level surface 8 After servicing the aerator be sure that all guards and covers are properly installed and secured 9 Atthe time of manufacture the machine conformed to all applicable safety standards To assure optimum performance and continued safety certification of the machine use genuine Toro replacement parts and ac cessories Replacement parts and accessories made by other manufacturers may result in non conformance with the safety standards and the warranty may be voided 10 If major repairs are ever needed or assistance is de sired contact an Authorized Toro Distributor Safety Safety and Instruction Decals Numerous safety and instruction decals are affixed to the ProCore SR series deep tine aerator If any decal becomes illegible or damaged install a new decal Part numbers for replacement decals are listed in your Parts Catalog Order replacement decals from your Autho rized Toro Distributor Safety Page 1 4 ProCore SR Series Chapter 2 TORO Product Records and Maintenance Table of Contents PRODUCT RECORDS 052 000 eee 1 MAINTENANCE 00000 0c eee
12. ProCore SR54 SR54 S SR70 and SR70 S PROCORE SR54 SHOWN ANTISEIZE LUBRICANT ANTISEIZE LUBRICANT Figure 1 1 Aerator frame 6 Lock washer 2 used 11 Cap screw 2 used per bearing 2 Flange bearing 2 used 7 Cap screw 2 used 12 Cap screw 2 used 3 Lock nut 2 used per bearing 8 Lock washer 2 used 13 Lock washer 2 used 4 Roller 9 Cap screw 2 used 14 Flat washer 2 used 5 Single roller boot 2 used 10 Scraper NOTE ProCore SR54 and SR 70 aerators use a single Roller Removal Fig 1 roller with two 2 bolt flange bearings Fig 1 Models SR54 S and SR70 S use two 2 rollers each sup 1 Position aerator on a firm level surface with aerator ported with two 2 bolt flange bearings Fig 2 The pro attached to tractor Disengage PTO apply tractor park cedure for removal and installation of the rollers is the ing brake stop engine and remove key from the ignition same The ProCore SR54 is shown in Figure 1 switch 2 Support aerator to prevent it from moving 3 Chock roller to prevent it from moving Chassis Page 3 2 ProCore SR Series 4 Loosen two 2 set screws that secure each bearing locking collar to roller shaft Fig 3 NOTE On ProCore SR54 S and SR70 S aerators the rear roller scraper is secured to the frame with cap screws that also secure the rear roller flan
13. Rods 0 cee eee eee eee 10 Coring Crankshaft SR54 12 Coring Crankshaft SR70 00 13 Coring Crankshaft Bearing Housings 14 Coring Head Drive Chain 04 18 Coring Head Drive Sprockets 20 CETO 0 AR EE N HR EN 22 sR oc ro ol E o OG ProCore SR Series Page 4 1 Coring Head SR54 amp SR70 Specifications Item Description ProCore SR54 Aerating Width Number of Connecting Rods Number of Rollers Depth Adjustment Gearbox Lubricant Gearbox Lubricant Capacity Gearbox Weight approximate 54 inches 1 37 meters 6 1 Hydraulic Top Link SAE 80W 90 gear lube 2 US quart 1 9 liter 80 Ibs 36 kg ProCore SR54 S Aerating Width Number of Connecting Rods Number of Rollers Depth Adjustment Gearbox Lubricant Gearbox Lubricant Capacity Gearbox Weight approximate 54 inches 1 37 meters 6 2 Fixed Top Link SAE 80W 90 gear lube 2 US quart 1 9 liter 80 Ibs 36 kg ProCore SR70 Aerating Width Number of Connecting Rods Number of Rollers Depth Adjustment Gearbox Lubricant Gearbox Lubricant Capacity Gearbox Weight approximate 73 inches 1 85 meters 8 1 Hydraulic Top Link SAE 80W 90 gear lube 2 US quart 1 9 liter 109 Ibs 50 kg ProCore SR70 S Aerating Width Number of Connecting Rods Number of Rollers Depth Adjustment Gearbox Lubricant Gearbox Lubricant Capacity Gearbox Weigh
14. from crank arm see Coring Crankshaft Bearing Housing Removal in this section Assembly Fig 16 1 If coring crankshaft sprocket was removed secure sprocket to crank arm and install coring crankshaft bear ing housing see Coring Crankshaft Bearing Housing Installation in this section 2 Install sprockets to gearbox shaft A Make sure that tapered surfaces of sprocket and sprocket hub are thoroughly clean no oil grease dirt rust etc ProCore SR Series Page 6 21 B Position square key in gearbox shaft slot Apply antiseize lubricant to bore of sprocket hub C Slide sprocket and hub onto gearbox shaft mak ing sure that tapered surfaces of sprocket and hub align D Position hub location from end of gearbox shaft as measured before removal Secure hub to gearbox shaft with set screw IMPORTANT When securing sprocket and sprocket hub tighten cap screws in three 3 equal steps and in a circular pattern to prevent hub flange damage E Align threaded holes of sprocket with non threaded holes of sprocket hub and install three 3 cap screws item 17 with lock washers item 18 Tighten cap screws in three 3 equal steps and ina circular pattern to secure sprocket and sprocket hub 3 Using a suitable straight edge check that alignment between gearbox coring crankshaft and idler sprockets is correct If needed readjust sprocket location on gear box shaft to align sprockets 4 Install and tensio
15. i fe S in N x o Coring Crankshaft PROCORE SR75 CORING CRANKSHAFT VIEWED FROM REAR MP gt at fe Figure 10 1 Crank arm 10 used 3 End crank shaft 2 used 5 Center crank shaft 2 Crank arm 2 used 4 RH crank shaft 2 used 6 LH crank shaft 2 used The ProCore SR75 coring crankshaft uses two 2 differ ent crank arms and four 4 different crank shafts For identification purposes the crank arms crank shafts and crankshaft timing are shown in Figure 10 Refer to your Parts Catalog to identify part numbers for crank shaft components NOTE The RH LH and center crank shafts can be identified by engravings on one end of the crank shaft When assembled the engraving should be orientated toward the left side of the machine when viewed from the rear Coring Head SR75 Page 6 12 ProCore SR Series in N o o This page is intentionally blank ge lt Da i fe S ProCore SR Series Page 6 13 Coring Head SR75 Coring Crankshaft Bearing Housings ANTISEIZE LUBRICANT 1200 ft Ib 1627 N m ANTISEIZE LUBRICANT 1200 ft Ib 1627 N m ANTISEIZE LUBRICANT 1200 ft Ib 1627 N m Figure 11 1 Cap screw 2 per bearing housing 6 2 Lock nut 2 per bearing housing 7 Crank pin 3 Cotter pin 8 Crank arm 4 Crank arm 9 Crank nut 5 Dowel pin 1 IMPORTANT Before disassembling the coring crankshaft label
16. in bearing flanges with holes in roller boot on aerator frame Orientate bearing so that grease fit tings point to front of aerator Secure both flange bear ings to frame with cap screws and lock nuts 5 Check that roller is free to rotate and no binding ex ists Center roller between bearings 6 Apply Loctite 242 or equivalent to threads of bear ing set screws Tighten two 2 set screws to secure each bearing locking collar to roller shaft ends 7 Lubricate grease fittings on bearings PROCORE SR54 S SHOWN FRONT Back roller 5 Lock nut Main roller 6 Double roller boot Cap screw 7 Aerator frame Flange bearing 8 Roller scraper POND Figure 3 3 Setscrew 2 used 4 Grease fitting 1 Bearing 2 Bearing housing 2 bolt Chassis Roller ProCore SR48 and SR72 PROCORE SR72 SHOWN ANTISEIZE LUBRICANT Figure 4 1 Aerator frame 4 Cap screw 2 Scraper 3 Roller 6 Lock nut NOTE The roller used on the ProCore SR48 and SR72 are very similar The procedure for removal and installa tion of the roller is the same for both models The Pro Core SR72 is shown in Figure 4 Roller Removal Fig 4 1 Position aerator on a firm level surface with aerator attached to tractor Disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Support aerator to prevent it from moving
17. master link clip so that the closed end is facing the direction of chain rotation ProCore SR Series Page 6 19 IMPORTANT To prevent gearbox damage do not overtighten drive chains Drive chains should have 1 2 12 7 mm total deflection when properly adjusted D Adjust idler sprocket location with jam rod item 11 so that chain has 1 2 12 7 mm total deflection at mid span between sprockets Make sure that jam nuts items 4 and 8 are fully tightened after chain ad justment is completed 6 Block crankshaft to prevent it from rotating Install and adjust second drive chain using procedure listed in step 5 above 7 After assembly rotate coring crankshaft by hand to make sure that no binding occurs 8 Lower and secure rear hood Figure 15 4 Gearbox sprocket 1 Drive chain 2 Jam rod 5 3 Jam nut Idler sprocket Coring Head SR75 Coring Head SR75 Coring Head Drive Sprockets Figure 16 1 Idler bolt 2 used 8 Jam nut 2 used 2 Master link assembly 2 used 9 Sprocket 2 used 3 Grooved washer 2 used 10 Saddle bolt 16 used 4 Jam nut 2 used 11 Jam rod 2 used 5 Idler sprocket 2 used 12 Drive chain 2 used 6 Lock nut 2 used 13 Lock nut 16 used 7 Sprocket hub 2 used Coring Head SR75 Page 6 20 14 15 16 Cap screw 3 used per hub 18 19 Idler bracket 2 used Gearbox ass
18. pin 8 Rear spring post 3 Lock nut 9 Cap screw 4 Boss nut 10 Cap screw 5 Hinge assembly 11 Linkage arm 6 Connecting rod assembly 12 Bumper pad Disassembly Fig 5 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch Coring Head SR75 Page 6 ANTISEIZE LUBRICANT 800 ft Ib 1085 N m ANTISEIZE LUBRICANT 800 ft Ib 1085 N m 13 Spring assembly 14 Tine head assembly 15 Tine head bolt 16 Front spring holder 17 Lock nut Be careful when removing the spring assembly The spring is under load and may cause personal injury during removal 8 ProCore SR Series 2 Remove both spring assemblies from rear spring post item 8 and front spring holder item 16 3 Remove linkage arm components as needed using Figure 5 as a guide 4 If necessary disassemble tine head assembly using Figure 6 as a guide 5 If necessary disassemble hinge assembly using Figure 7 as a guide 6 Discard all removed bearings Assembly Fig 5 1 Iftine head Fig 5 or hinge assemblies Fig 6 were disassembled A Install one 1 retaining ring into groove in bore Make sure that retaining ring is properly seated in groove B Press anew bearing into the component bore un til the bearing contacts installed retaining ring C Press remaining new bearings into bore so that they cont
19. retaining rings are properly seated in grooves ProCore SR Series Page 5 11 B Insert bearing spacer into rod bore C Press ball bearings into connecting rod bore until the bearings contact installed retaining rings 2 If bearings were removed from lower bore of con necting rod install new bearings into lower bore A Install two 2 retaining rings into the grooves in lower bore of rod Make sure that retaining rings are properly seated in grooves B Press anew bearing into one side of the connect ing rod bore until the bearing contacts installed re taining ring Then press second new bearing into bore so that it contacts first bearing C Insert bearing spacer into lower rod bore D Press final two 2 new bearings into housing fol lowing above procedure Make sure that bearing spacer is centered in rod bore 3 Apply antiseize lubricant to crank pin item 15 and wrist pin item 16 NOTE When installing connecting rod onto wrist pin use bullet tool SG255002 see Special Tools in this chapter to prevent wrist pin thread damage 4 Place outer bushings item 5 to small end of con necting rod Slide lower end of connecting rod onto wrist pin NOTE When installing crank pin item 15 use bullet tool SG255000 see Special Tools in this chapter to pre vent thread damage to crank pin 5 Position connecting rod to crank arms Insert crank pin item 15 through crank arms and upper connecting rod b
20. shaft B Press input shaft toward rear opening of gearbox housing to remove shaft C Remove outer bearing item 16 from housing D Using a press remove inner bearing cone item 15 from input shaft and bearing cup from housing E Discard removed bearings 6 Thoroughly clean and inspect all gearbox compo nents Replace all worn or damaged parts Gearbox Assembly Fig 4 1 Install new bearings and input shaft into gearbox housing A Press inner bearing cone item 15 fully onto input shaft B Insert inner bearing cup item 15 and outer bear ing item 16 into gearbox housing bores Make sure that bearings are pressed fully to shoulder in hous ing C Install input shaft into gearbox housing through rear opening of housing D Install the removed shim s item 4 and retaining ring item 10 onto input shaft If necessary remove or add shims so that the shim s fit tightly between the retaining ring and outer bearing Make sure that retaining ring is fully seated in shaft groove and that there is no endplay in input shaft assembly IMPORTANT Before installing output shaft into gearbox housing input shaft bearing pre load must be checked and if necessary adjusted ProCore SR Series Page 7 7 2 Check and adjust input shaft bearing pre load A Use a piece of string and a spring scale to deter mine the resistance to rotate the input shaft Wrap the string around the input shaft and attach the
21. shaft C Check that driveshaft yoke is properly locked by sliding yoke on PTO shaft 5 Lubricate driveshaft grease fittings 6 Connect driveshaft shield safety chains to the tractor and the aerator driveshaft shield Make sure that chains remain slack when the aerator is raised or lowered 1 Driveshaft 2 Tractor PTO shaft Figure 9 3 Locking collar Note PTO driveshaft shield is not shown in this illustration 1 Driveshaft coupler 2 Gearbox input shaft ProCore SR Series Page 3 9 Figure 10 3 Pin 4 Nut Chassis PTO Driveshaft Clutch Service Figure 11 1 Lock nut 10 Outer tube cover 19 2 Inner tube yoke 11 Inner tube cover 20 3 Inner tube 12 Bushing 21 4 PTO clutch lining 13 Roll pin 22 5 Pressure plate 14 Screw 23 6 PTO pressure plate 15 Spring 8 used 24 7 Driving plate 16 Connector 25 8 Safety chain 17 Cap screw 8 used 26 9 Flange yoke 18 Yoke Ball and collar kit Yoke with tube Cone shield tractor side Splined hub Cone shield clutch side Cross and bearing kit Nut 8 used Connector NOTE The PTO driveshaft used on SR48 SR54 SR54 S SR70 and SR70 S aerators include two 2 clutch linings and fewer driveshaft components on the aerator end of the PTO driveshaft Fig 12 Driveshaft The friction clutch on the PTO driveshaft may clutch service for all ProCore SR models is similar become hot during use To prevent personal in jury make s
22. shaft bearings are not pre loaded If out put shaft end play is determined add additional shim s item 3 as needed If bearing pre load drag is deter mined remove shim s 6 Check gearbox backlash IMPORTANT Correct engagement between bevel gear and input shaft gear is critical to gearbox per formance and durability A Position a dial indicator at the center of a tooth on the bevel gear Gearbox Service Page 7 4 B While preventing the input shaft from turning ro tate the bevel gear and monitor the dial indicator reading to check gearbox backlash Allowable back lash is from 0 010 to 0 012 0 25 to 0 30 mm IMPORTANT If backlash adjustment is neces sary do not simply remove shims from one side of output shaft assembly as this would affect output shaft endplay Shims must be moved from one side of the output shaft to the other side during backlash adjustment C If backlash is excessive greater than 0 012 move shim s item 3 from ball bearing side of gear box to the tapered bearing side of gearbox This shim movement will move bevel gear closer to the input shaft gear to reduce backlash D Ifbacklash is insufficient less than 0 010 move shim s item 3 from tapered bearing side of gear box to the ball bearing side This shim movement will move bevel gear away from the input shaft gear to in crease backlash E Recheck backlash after any shim change Re peat process until gearbox
23. similar The ProCore SR72 is shown in Figure 20 Gearbox Removal Fig 20 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch Coring Head SR48 amp SR72 Page 5 22 2 Remove screens from aerator frame See Covers Removal in the Service and Repairs section of Chapter 3 Chassis 3 Drain lubricant from gearbox 4 Disconnect PTO driveshaft from gearbox input shaft see PTO Driveshaft Removal in the Service and Re pairs section of Chapter 3 Chassis ProCore SR Series 5 Remove four 4 cap screws lock washers and flat washers that secure driveshaft shield item 20 to gear box Remove shield 6 Remove drive chains from gearbox sprockets see Coring Head Drive Chain Disassembly in this section 7 Remove drive sprocket and sprocket hub from both gearbox output shafts see Coring Head Drive Sprock ets Disassembly in this section 8 Remove ten 10 saddle bolts item 10 and lock nuts item 13 that secure gearbox flanges to frame 9 Remove four 4 cap screws and lock washers that secure gearbox to aerator frame To prevent personal injury make sure that gear box is supported as it is removed from the ma chine Refer to Specifications in this chapter for approximate gearbox weight 10 Carefully remove gearbox from machine NOTE For gearbox disassembly and assembl
24. tensioned by an adjustable idler sprocket ProCore SR Series Page 4 5 The coring crankshaft is composed of multiple crank arms bearings bearing housings and crank shafts The crankshaft assembly is designed and assembled to en sure minimal vibration during aerator operation A variety of tines and tine heads are available for use on ProCore SR Series aerators Refer to the Operator s Manual for available options Coring Head SR54 amp SR70 sR oc ro ol E o OG Coring Head Adjustments See Operator s Manual for adjustment procedures for the coring head on your ProCore SR series aerator A CAUTION Never work on the aerator with the tow tractor PTO engaged or engine running Always disen gage the PTO stop tractor engine remove key from the ignition switch and wait for all machine movementto stop before performing any service to aerator components Coring Head SR54 amp SR70 Page 4 6 ProCore SR Series Special Tools Order special tools from your Toro Distributor Crankshaft Nut Wrench Use to remove and install the hex nuts that secure coring head crankshaft crank arms and connecting rods Toro Part Number SG885300 Figure 2 Bullet Tools Use to protect threads of crankshaft components during assembly of crankshaft connecting rods and linkage SG255000 arms The bullet tool should be installed onto the 13 8 16 threads of the crankpin or linkage arm fastener to p
25. to bearing surfaces of crank pin item 1 and cap screw item 2 4 Place outer bushings items 3 and 6 to both ends of connecting rod NOTE When installing crank pin item 1 use bullet tool SG255001 see Special Tools in this chapter to pre vent thread damage to crank pin 5 Position connecting rod assembly to coring crank shaft and linkage arms Insert crank pin item 1 through crank arms and upper connecting rod bearings NOTE When installing cap screw item 2 use bullet tool SG255002 see Special Tools in this chapter to pre vent thread damage to screw 6 Insert cap screw item 2 through linkage arms and lower connecting rod bearings 7 Slide clipped washer item 13 onto crank pin item 1 and align washer flat with step in crank arm Thread hex nut item 14 onto crank pin 8 Thread lock nut item 12 onto cap screw item 2 9 Insert block of wood between aerator frame and con necting rod to prevent the crankshaft from turning and then properly torque connecting rod fasteners A Torque lock nut item 12 on cap screw to 265 ft Ib 859 N m B Torque hex nut item 14 on crank pin to 950 ft Ib 1288 N m 10 After assembly rotate coring crankshaft by hand to make sure that no binding occurs 11 Lower and secure rear hood Coring Head SR54 amp SR70 sR o ME IA ol E o OG Coring Crankshaft SR54 PROCORE SR54 CORING CRANKSHAFT VIEWED FROM REAR
26. 1 2 Safety and Instruction Decals 1 4 Chapter 2 Product Records and Maintenance Product Records 00 0e eee es de 2 1 Maintenance 0200 cece eee 2 1 Equivalents and Conversions 2 2 Torque Specifications 0 cee eee 2 3 Chapter 3 Chassis General Information 000 000 ee 3 1 Service and Repairs 000 Ee ke 3 2 Chapter 4 Coring Head SR54 amp SR70 Specifications 6 00 cece eee eee 4 2 General Information 00ceeeeee 4 4 Special Tools EDE ewan DERDE ees 4 7 Service and Repairs 000 Ee ee 4 8 Chapter 5 Coring Head SR48 amp SR72 Specifications 0 eee eee 5 2 General Information 0 0 00 eee 5 4 Special Tools 00 e cece eee 5 6 Service and Repairs 000 Ee ee 5 8 Chapter 6 Coring Head SR75 Specifications 0 eee 6 2 General Information 0 00eee 6 4 Special Tools 0 cece cence eee 6 6 Service and Repairs 000 sees 6 8 Chapter 7 Gearbox Service General Information 0eeeeeeee 7 1 Service and Repairs 000 Ee ke 7 2 ProCore SR Series 2 ge hm fe Oo Q o p S gt ge o hm oO Coring Head SR54 amp SR70 Coring Head SR48 amp SR72 Coring Head Gearbox and Maintenance This page is intentionally blank ProCo
27. 3 Chock roller to prevent it from moving Chassis 5 Flange bearing 2 used Page 3 4 7 Vertical roller bar 2 used 8 Lock washer 2 used 9 Cap screw 2 used 4 Loosen two 2 set screws that secure each bearing locking collar to roller shaft Fig 5 5 Remove four 4 cap screws and lock nuts that se cure both vertical roller bars item 7 to aerator frame 6 Start engine on tractor Slowly raise aerator while al lowing roller assembly to remain on the ground Stop tractor engine and remove key from the ignition switch Support raised aerator to prevent it from lowering unex pectedly ProCore SR Series To prevent personal injury make sure that roller is supported as it is removed from the machine 7 Remove roller with vertical roller bars and flange bearings from under machine 8 Slide vertical roller bars and flange bearings from roller shaft ends 9 If necessary remove four 4 cap screws and lock nuts that secure flange bearings to vertical roller bars Separate bearings from roller bars Roller Installation Fig 4 1 If bearings were removed from vertical roller bars position flange bearings to roller bars so that bearing grease fittings will point to front of aerator after installa tion Secure bearings to roller bars with four 4 cap screws and lock nuts 2 Clean roller shaft ends and apply antiseize lubricant to shaft ends Slide vertical roller bar and flange bearing assembli
28. 64 0 546875 13 891 1 16 0 0625 1 588 9 16 0 5625 14 288 5 64 0 078125 1 984 37 64 0 578125 14 684 3 32 0 09375 2 381 19 82 0 59375 15 081 7 64 0 109275 2 778 39 64 0 609375 15 478 1 8 0 1250 3 175 5 8 0 6250 15 875 9 64 0 140625 3 572 41 64 0 640625 16 272 5 32 0 15625 3 969 21 32 0 65625 16 669 11 64 0 171875 4366 43 64 0 671875 17 066 3 16 0 1875 4 762 11 16 0 6875 17 462 13 64 0 203125 5 159 45 64 0 708125 17 859 7 82 0 21875 5 556 23 32 0 71875 18 256 15 64 0 234375 5 953 47 64 0 734375 18 653 1 4 0 2500 6 350 3 4 0 7500 19 050 17 64 0 265625 6 747 49 64 0 765625 19 447 9 32 0 28125 7 144 25 82 0 78125 19 844 19 64 0 296875 7 541 51 64 0 796875 20 241 5 16 0 3125 7 938 13 16 0 8125 20 638 21 64 0 328125 8 334 53 64 0 828125 21 034 11 32 0 34375 8 731 27 32 0 84375 21 431 23 64 0 359375 9 128 55 64 0 859375 21 828 3 8 0 3750 9 525 7 8 0 8750 22 225 25 64 0 390625 9 922 57 64 0 890625 22 622 13 82 0 40625 10 319 29 32 0 90625 23 019 27 64 0 421875 10 716 59 64 0 921875 23 416 7 16 0 4375 11 112 15 16 0 9375 23 812 29 64 0 453125 11 509 61 64 0 953125 24 209 15 32 0 46875 11 906 31 32 0 96875 24 606 31 64 0 484375
29. Drive for the coring head is provided by the towing trac tor PTO output shaft A gearbox on the ProCore aerator is rotated by a driveshaft connected to the tractor PTO shaft The aerator gearbox provides rotation for the cor ing head crankshaft assembly with two 2 drive chains The drive chains are each tensioned by an adjustable idler sprocket Coring Head SR75 4 Connecting rod 5 Linkage arm assembly 6 Drive chain sprocket Page 6 4 7 Crank arm 8 Bearing housing assembly The coring crankshaft is composed of multiple crank arms bearings bearing housings and crank pins The crankshaft assembly is designed and assembled to en sure minimal vibration during aerator operation A variety of tines and tine heads are available for use on ProCore SR Series aerators Refer to the Operator s Manual for available options ProCore SR Series Coring Head Adjustments See Operator s Manual for adjustment procedures for the coring head on your ProCore SR series aerator A CAUTION Never work on the aerator with the tow tractor PTO engaged or engine running Always disen gage the PTO stop tractor engine remove key from the ignition switch and wait for all machine movementto stop before performing any service to aerator components xe Li IR Dr fn I ad S ProCore SR Series Page 6 5 Coring Head SR75 Special Tools Order special tools from your Toro Distributor Crankshaft Nut Wrenc
30. E Thecoring head drive chain assemblies for Pro Core SR54 and SR70 aerators are very similar The Pro Core SR54 is shown in Figure 13 Disassembly Fig 13 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Raise and support rear hood 3 Loosen cap screw item 2 and lock nut item 5 to re move idler tension on drive chain Coring Head SR54 amp SR70 Page 4 18 10 Master link assembly 11 RH idler bracket 12 Gearbox 13 Gearbox sprocket 4 Rotate coring crankshaft until drive chain master link is located at gearbox sprocket Note direction of closed end of master link clip for assembly purposes Remove clip and master link from drive chain Locate and remove master link O rings 5 Remove drive chain from gearbox coring crankshaft and idler sprockets Fig 14 6 If necessary remove idler assembly using Figure 13 as a guide 7 Ifnecessary remove sprocket s from gearbox shaft see Coring Head Drive Sprockets Disassembly in this section ProCore SR Series 8 If sprocket removal from coring crankshaft is neces sary remove coring crankshaft bearing housing that in cludes sprocket and remove sprocket from crank arm see Coring Crankshaft Bearing Housing Removal in this section Assembly Fig 13 1 If coring crankshaft sprocket was removed secure sprocket to c
31. Page 1 2 To reduce the potential for injury or death com ply with the following safety instructions 3 Make sure that the tractor is carefully selected to as sure the best performance and safe operation of the ProCore deep tine aerator 4 Make sure that operator is familiar with safe tractor operation 5 Tighten any loose nuts bolts or screws to ensure machine is in safe operating condition 6 Make sure that the ProCore deep tine aerator is properly attached to tractor ProCore SR Series While Operating IMPORTANT To prevent damage to your ProCore aerator during operation e Never operate ProCore aerator without tine heads installed e Do not operate the tractor in reverse when the ProCore aerator is lowered e Make sure aerator roller is on ground before op erating aerator Never operate with the aerator in the raised position e Never operate the tractor PTO in excess of 500 RPM 1 Operator should be on the tractor when starting the engine and when operating the aerator Stay away from the aerator coring head when it is engaged 2 Before starting the engine on the tractor A Apply the parking brake B Make sure traction lever or transmission is in neu tral and PTO is disengaged C Refer to Tractor Operator s Manual for safe start ing procedures Maintenance and Service 1 The Operator s Manual provides information regard ing the operation general maintenance and mainte nance int
32. R70 S 2 Gearbox SR54 and SR54 S 6 Gearbox SR72 and SR75 000 10 General Information Gearbox Service The gearbox disassembly and assembly procedures listed in this chapter assume that the gearbox assembly has been removed from the machine Refer to the cor rect Coring Head chapter for information on removing gearbox assembly from aerator x ve Q hm 2 ProCore SR Series Page 7 1 Gearbox Service Service and Repairs Gearbox Service SR48 SR70 and SR70 S Figure 1 1 Oil seal 9 Housing 17 Oil seal 2 Retaining ring 10 Retaining ring 18 Axle tube 3 Shim set gear backlash 11 Bevel gear 19 Socket head screw 6 per tube 4 Shim set input shaft endplay 12 Cover plate 20 O ring 5 Tapered bearing cup and cone 13 Input shaft 21 Axle tube 6 Output shaft 14 Plug 3 used 22 Inner bearing cup and cone 7 Relief vent 15 Ball bearing 23 Outer bearing 8 Ball bearing 16 Retaining ring Gearbox Disassembly Fig 1 1 Thoroughly clea
33. ack up ring 14 O ring Disassembly Fig 15 1 Remove hydraulic top link from aerator and tractor Fig 16 2 Remove spacers item 16 from cylinder shaft clevis and adapter on barrel end Chassis Page 3 14 3 Remove oil from hydraulic cylinder into a drain pan by slowly pumping the cylinder shaft Plug both cylinder ports and clean the outside of the cylinder 4 Remove two 2 cap screws that secure retainer plate to head Position plate away from cylinder barrel to allow access to retaining ring item 4 ProCore SR Series 5 Remove retaining ring from groove in barrel 6 Extract shaft head and piston assembly by carefully twisting and pulling on the shaft IMPORTANT Do not clamp vise jaws against the shaft surface Clamp on the shaft clevis ONLY 7 Mount shaft securely ina vise by clamping on the cle vis of the shaft Remove lock nut and piston from the shaft Carefully slide head and retainer plate off the shaft 8 Taking care to not scratch or damage components remove and discard wiper back up rings and O rings from head and piston Inspection A CAUTION Use eye protection such as goggles when using compressed air to dry cylinder components 1 Wash all cylinder components in clean solvent Dry parts with compressed air 2 Inspect internal surface of barrel for deep scratches out of roundness and bending Replace if worn or damaged 3 Inspect head shaft and piston for excessive
34. act previously installed bearing D After all bearings have been installed install sec ond retaining ring into groove in component bore Make sure that retaining ring is properly seated in groove 2 Apply antiseize lubricant to wrist pin item 2 NOTE When installing wrist pins item 2 use bullet tool SG255001 see Special Tools in this chapter to pre vent wrist pin thread damage 3 Assemble linkage arm components using Figure 5 as a guide A Torque lock nuts item 3 and boss nuts item 4 to 800 ft Ib 1085 N m 4 Make sure that spring wires are not broken or crossed Fig 8 Install both spring assemblies to rear spring post item 8 and front spring holder item 16 Figure 6 1 Tine head housing 4 Outer bushing 2 Bearing 5 Front spring holder 3 Retaining ring 6 Tine head bolt Coring Head SR75 Figure 7 1 Hinge housing 3 Retaining ring 2 Bearing 4 Outer bushing Figure 8 1 Spring assembly 3 Front spring holder 2 Rear spring post 4 Crossed spring wires ProCore SR Series Page 6 9 Coring Head SR75 Connecting Rods ANTISEIZE LUBRICANT 800 ft Ib ANTISEIZE LUBRICANT 1200 ft Ib 1627 N m 800 ft Ib 1085 N m ANTISEIZE LUBRICANT Figure 9 1 Connecting rod 7 Cotter pin 12 Retaining ring 2 per connecting rod 2 Dowel pin 8 Crank nut 13 Wrist pin 3 Retaining ring 2 per connecting rod 9 Outer b
35. aft nuts item 9 to 1200 ft Ib 1627 N m 7 Tighten set screws to secure ball bearing flange to crankshaft 8 After assembly rotate coring crankshaft by hand to make sure that no binding occurs IMPORTANT When installing coring head drive chains make sure that one of the chains is installed and properly tensioned before installing second chain 9 If removed install coring head drive chain see Cor ing Head Drive Assembly in this section Make sure that chain is properly tensioned 10 Lower and secure back cover ProCore SR Series This page is intentionally blank o N N mr TY D Eg oO ProCore SR Series Page 5 17 Coring Head SR48 amp SR72 Coring Head Drive Chain Figure 16 1 Idler shaft 10 Saddle bolt 10 used 18 PTO driveshaft 2 Master link assembly 11 Lock washer 4 used 19 Square key 3 Jam nut grooved 12 Drive chain 2 used 20 Driveshaft shield 4 Jam nut 13 Lock nut 10 used 21 Cap screw 4 used 5 Idler sprocket 14 Lock washer 22 Lock washer 4 used 6 Lock nut 15 Gearbox assembly 23 Flat washer 4 used 7 Sprocket hub 2 used 16 Bolt 24 Cap screw 3 used per hub 8 Cap screw 4 used 17 Hex nut 25 Cap screw 3 used per sprocket 9 Sprocket 2 used NOTE The drive chain assemblies for ProCore SR48 and SR72 series aerators are very similar The ProCore SR72 is shown in Figure 16 Disassembly Fig 16 1 Position aer
36. aft shield safety chains from the trac tor and the aerator driveshaft shield 3 Support PTO driveshaft to prevent it from falling Chassis 4 Flat washer 4 used 5 Lock washer 4 used Page 3 8 6 Cap screw 4 used 7 PTO driveshaft 4 Separate PTO driveshaft from tractor PTO shaft Fig 9 A Pull back on locking collar to release driveshaft from PTO shaft B Slide driveshaft yoke from PTO shaft 5 Separate PTO driveshaft from gearbox input shaft Fig 10 A Open driveshaft shield access panel to be able to reach PTO driveshaft coupler B Remove pin and lock nut from PTO driveshaft coupler at aerator gearbox input shaft C Slide driveshaft coupler from gearbox shaft 6 Remove driveshaft from machine ProCore SR Series Installation Fig 8 1 Apply grease to gearbox input shaft and tractor out put shaft 2 Position PTO driveshaft with clutch end toward aera tor gearbox 3 Secure PTO driveshaft coupler to gearbox input shaft Fig 10 A Align splines of driveshaft coupler with gearbox input shaft and slide coupler onto shaft B Secure driveshaft coupler to gearbox input shaft with pin and nut C Close and secure driveshaft shield access panel 4 Secure PTO driveshaft to tractor PTO shaft Fig 9 A Align splines of driveshaft yoke with tractor PTO shaft and slide yoke onto shaft as far as possible B Pull back on yoke so that locking collar secures driveshaft to PTO
37. al in this section As crankshaft components are removed from machine the crankshaft will become out of bal ance and may rotate quickly creating pinch points and potential for personal injury Be cau tious when disassembling the coring crankshaft IMPORTANT When removing crank pin item 2 note orientation of crank pin head for proper assem bly 4 Remove crank pins and connecting rods on both sides of bearing housing that is to be removed see Con necting Rod Removal in this section 5 Support bearing housing assembly to prevent it from falling Remove two 2 cap screws and lock nuts that secure bearing housing assembly to coring head frame Remove bearing housing assembly with crank arms at tached from machine 6 Disassemble bearing housing assembly IMPORTANT The crank arms on either side of a bearing housing are different Before bearing hous ing disassembly make sure to note location and ori entation of crank arms A Note crank arm alignment with each other for as sembly purposes Incorrect alignment of crank arms will prevent smooth aerator operation and will lead to aerator damage If desired use a marker to make a diagonal line across the bearing housing and crank arms for assembly purposes B Secure bearing housing assembly in a vise C Remove the hex nut item 5 that secures one of the crank arms item 6 or 13 to crank shaft item 11 D Slide crank arm from crank shaft E If spr
38. angle on the crank shaft item 12 and bearing housing ball bearing item 11 flange direction all need to be correctly placed for proper aerator operation Dur ing bearing housing removal carefully note position of components to allow proper assembly ProCore SR Series Removal Fig 12 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Unlatch open and support back cover to allow ac cess to coring crankshaft 3 If bearing housing with drive chain attached is to be removed remove coring head drive chain see Coring Head Drive Disassembly in this section As crankshaft components are removed from machine the crankshaft will become out of bal ance and may rotate quickly creating pinch points and potential for personal injury Be cau tious when disassembling the coring crankshaft 4 Remove crank pins and connecting rods on both sides of bearing housing that is to be removed see Con necting Rod Removal in this section 5 Support bearing housing assembly to prevent it from falling Remove two 2 cap screws and lock nuts that secure bearing housing assembly to coring head frame Remove bearing housing assembly with crank arms at tached from machine 6 Disassemble bearing housing assembly IMPORTANT The crank arms on either side of a bearing housing are different Before bear
39. ankshaft uses five 5 differ ent crank arms For identification purposes the crank arms and crankshaft timing are shown in Figure 11 Re fer to your Parts Catalog to identify part numbers for crankshaft components ProCore SR Series Page 5 13 Coring Head SR48 amp SR72 ge I Da i fe S T N o N o aal o Coring Crankshaft Bearing Housings 1200 ft Ib 1627 N m 1200 ft Ib 1627 N m 1288 N m ANTISEIZE LUBRICANT PROCORE SR72 SHOWN 950 ft lb 1288 N m Figure 12 ANTISEIZE LUBRICANT 1 Lock nut 6 2 Hex nut 7 Crank pin 3 Clipped washer 8 Crank arm 4 Crank arm 9 Crank shaft nut 5 Dowel pin bullets 10 Locking plate IMPORTANT Before disassembling the coring crankshaft label location and orientation of all com ponents that are to be removed Correct component location and orientation are necessary for proper aerator operation NOTE The crankshaft bearing housings for ProCore SR48 and SR72 series aerators are very similar The ProCore SR72 is shown in Figure 12 Coring Head SR48 amp SR72 Connecting rod assembly Page 5 14 11 Bearing housing assembly 12 Crank shaft 13 Crank arm 14 Crank arm NOTE Many of the coring crankshaft components de pend on proper orientation Crank pin item 7 head position crank arm location on the coring crankshaft crank arm
40. ator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Raise and support rear hood Coring Head SR48 amp SR72 Page 5 18 3 Loosen jam nut item 3 hex nut item 17 and bolt item 16 to loosen idler tension on drive chain 4 Rotate coring crankshaft until drive chain master link is located at gearbox sprocket Note direction of closed end of master link clip for assembly purposes Remove master link from drive chain Locate and remove master link O rings 5 Remove drive chain from gearbox coring crankshaft and idler sprockets Fig 17 ProCore SR Series 6 Ifnecessary remove sprocket s from gearbox shaft see Coring Head Drive Sprockets Disassembly in this section 7 If sprocket removal from coring crankshaft is neces sary remove coring crankshaft bearing housing that in cludes sprocket and remove sprocket from crank arm see Coring Crankshaft Bearing Housing Removal in this section 8 If necessary remove idler assembly using Figure 16 as a guide Assembly Fig 16 1 If coring crankshaft sprocket was removed secure sprocket to crank arm and install coring crankshaft bear ing housing see Coring Crankshaft Bearing Housing Installation in this section 2 If sprockets were removed from gearbox shaft install sprockets to gearbox shaft see Coring Head Drive Sprockets Assembly in
41. backlash is correct 7 Apply light coating of Permatex No 2 to sealing surface of cover plate item 12 Use a soft face hammer to drive cover plate into housing 8 Carefully slide axle tube assemblies onto gearbox shafts taking care to not damage seals Align marker line on housing and axle tube Fig 2 Secure axle tubes to housing with socket head screws item 19 9 Apply alight coating of grease on lips and OD of input seal item 1 Install seal into gearbox bore taking care to not damage seal during installation Oil seal should be flush to slightly recessed into gearbox bore ProCore SR Series This page is intentionally blank Gearbox ProCore SR Series Page 7 5 Gearbox Service Gearbox Service SR54 and SR54 S Figure 3 7 Relief vent 8 Ball bearing 9 Housing 10 Retaining ring 11 Bevel gear Oil seal Retaining ring Shim set gear backlash Shim set input shaft endplay Tapered bearing cup and cone Output shaft PaAPPoONn gt Gearbox Disassembly Fig 4 1 Thoroughly clean all corrosion and burrs from output shaft and input shaft to allow easier gearbox disassem bly 2 Carefully pry cover plate item 12 from rear of hous ing taking care to not damage housing opening Check t
42. bearing gear side 24 Plug 7 Oil seal 16 Socket head screw 6 per sleeve 25 Spacer 8 O ring 17 Inner bearing 26 Outer bearing 9 Seal retainer 18 Input shaft 27 Oil seal Gearbox Disassembly Fig 4 ALIGNMENT 1 Thoroughly clean all corrosion and burrs from output shaft and input shaft to allow easier gearbox disassem bly 2 Use a marker to make a diagonal line across the housing and axle tubes for assembly purposes Fig 5 3 Remove eight 8 cap screws and washers item 12 that secure cover plate item 14 to gearbox housing Remove cover plate from housing 4 Remove socket head screws item 16 that secure axle tubes items 5 and 22 to housing Slide axle tube assemblies from gearbox Gearbox Service Page 7 10 ProCore SR Series Figure 5 5 Use a press to remove output shaft and bearings B Remove and discard O ring item 4 and oil seal from gearbox housing item 7 from seal retainer Note orientation of oil seal for assembly purposes NOTE Shim set item 19 is used to adjust gearbox backlash When removing output shaft and bearings C Press bearing item 6 from axle tube Discard re take note of location and number of shims to assist in as moved bearing sembly process D Remove and discard O ring item 8 from inner A Remove retaining ring item 20 and shim s flange of axle tube item 19 from side of gearbox housing opposite the bevel gear item 21 8 Thoroughly clean and inspect a
43. chine B Place two 2 spacers item 9 between screen and frame Install two 2 cap screws and lock wash ers to secure front screen to frame C Secure front screen to screen clip item 11 with cap screw lock nut and two 2 flat washers D Secure front screen tab to frame with cap screw lock washer and flat washer If removed secure rear hood to machine with two 2 cap screws item 2 B Support front screen to prevent it from falling 4 C Remove cap screw lock nut and two 2 flat washers that secure front screen to screen clip item 11 D Remove cap screw lock washer and flat washer that secure front screen to frame E Remove two 2 cap screws and flat washers that secure front screen to frame Retrieve two 2 spacers item 9 from between screen and frame F Remove front screen from machine ProCore SR Series Page 3 17 Lower and secure rear hood Chassis Covers ProCore SR48 and SR72 PROCORE SR72 SHOWN Figure 18 7 Front screen bracket 2 used 8 Cap screw 8 used LH screen 9 Cap screw 8 used 1 1 1 Rear hood 2 3 4 Foam strip 2 used 0 Socket head screw 4 used 5 1 6 RH screen Spacer 4 used Lock nut 4 used Top screen clip 2 used NOTE The covers used on the ProCore SR48 and SR72 are very similar The procedure for removal and installation of the covers is the same on these models The ProCore SR72 is shown i
44. d bearing cup from gearbox housing G Discard removed bearings 6 Use a press to remove input shaft and bearings from gearbox housing A Remove oil seal item 1 from gearbox housing taking care to not damage seal bore in housing Dis card oil seal NOTE Shim set item 4 is used to adjust input shaft bearing pre load When removing input shaft take note of location and number of shims to assist in gearbox assembly 2 B Remove retaining ring item 10 and shim s item 4 from input shaft C Press input shaft toward rear opening of gearbox housing to remove shaft D Remove outer bearing item 23 from housing E Using a press remove inner bearing item 22 cone from input shaft and bearing cup from housing F Discard removed bearings 7 Disassemble axle tubes A Remove oil seal item 17 from axle tube taking care to not damage seal bore in tube Discard seal ALIGNMENT Figure 2 Install new bearings and input shaft into gearbox housing A Press inner bearing item 22 cone fully onto input shaft B Press inner bearing item 22 cup and outer bear ing item 23 fully into gearbox housing bores C Install input shaft into gearbox housing through rear opening of housing D Install the removed shim s item 4 and retaining ring item 10 onto input shaft If necessary remove or add shims so that the shim s fit tightly between the retaining ring and outer bearing Make sure that retain
45. defined as threads coated with a lubricant such as oil graphite or thread sealant such as Loctite NOTE Torgue values may have to be reduced when installing fasteners into threaded aluminum or brass The specific torgue value should be determined based on the fastener size the aluminum or base material strength length of thread engagement etc Product Records and Maintenance Page 2 4 NOTE The nominal torgue values listed above for Grade 5 and 8 fasteners are based on 75 of the mini mum proof load specified in SAE J429 The tolerance is approximately 10 of the nominal torque value Thin height nuts include jam nuts ProCore SR Series Standard Torque for Dry Zinc Plated and Steel Fasteners Metric Fasteners Regular Height Nuts Thread Size M5 X 0 8 57 5 in Ib 96 9 in lIb Class 8 8 Bolts Screws and Studs with Class 8 or Stronger Nuts 640 60 N cm 1018 100 N cm Class 10 9 Bolts Screws and Studs with Regular Height Nuts Class 10 or Stronger Nuts 133 13 in Ib 1500 150 N cm M6 X 1 0 M8 X 1 25 19 2 ft lb M10 X 1 5 38 4 ft lb M12 X 1 75 66 7 ft lb M16 X 2 0 166 15 ft lb M20 X 2 5 325 33 ft lb NOTE Reduce torque values listed in the table above by 25 for lubricated fasteners Lubricated fasteners are defined as threads coated with a lubricant such as oil graphite or thread sealant such as Loctite NOTE Torque values may have to be reduced when installing fasteners
46. drive new spring pins into aerator frame holes Coring Head SR54 amp SR70 sR oc IA ol z fo OG 3 Install components to bearing housing assembly A lfaremoved crank arm included a drive sprocket install sprocket if it was removed Fig 12 B If both crank arms were removed from crank shaft use notes made during disassembly to proper ly orientate one of the crank arms items 6 or 13 and slide onto crank shaft Install hex nut onto crank shaft threads to secure crank arm to crank shaft C Apply antiseize lubricant liberally to crank shaft item 11 Noting orientation of crank shaft grooves from disassembly slide crank shaft with attached crank arm into bearing housing Do not tighten bear ing set screws item 15 at this time D Using notes made during disassembly properly orientate second crank arm items 6 or 13 and slide onto crank shaft Install hex nut onto crank shaft threads to secure crank arm to crank shaft E Secure bearing housing assembly in a vise and fully tighten hex nuts to secure assembly Torque hex nuts from 950 ft Ib 1288 N m 4 Position bearing housing assembly with crank arms attached to spring pins on aerator frame Install two 2 cap screws and lock nuts to secure bearing housing as sembly to coring head frame Coring Head SR54 amp SR70 Page 4 16 5 Install crank pins and connecting rods on both sides of bearing housing see Connecting Rod Installation in t
47. e bearing opening of housing bevel gear gear side bearing cone and then gear side bearing open ing of housing C Insert gear side bearing cup item 15 into bear ing bore of gearbox housing D Install the removed shim s item 19 and retain ing ring item 20 into gear side bearing bore Make sure that retaining ring is fully seated in housing groove E Insert non gear side bearing cup item 2 into bearing bore of gearbox housing Make sure that bearing is pressed fully to bearing cone on shaft F Install the removed shim s item 19 and retain ing ring item 20 into non gear side bearing bore Make sure that retaining ring is fully seated in hous ing groove Gearbox Service Page 7 12 5 Check that there is no end play in the output shaft and that output shaft bearings are not pre loaded If out put shaft end play is determined add additional shim s item 19 as needed If bearing pre load drag is deter mined remove shim s 6 Check gearbox backlash IMPORTANT Correct engagement between bevel gear and input shaft gear is critical to gearbox per formance and durability A Position a dial indicator at the center of a tooth on the bevel gear item 21 B While preventing the input shaft from turning ro tate the bevel gear and monitor the dial indicator reading to check gearbox backlash Allowable back lash is from 0 010 to 0 012 0 25 to 0 30 mm IMPORTANT If backlash adjustment is n
48. e bolt 16 used 16 Square key 2 used 4 Jam nut 2 used 11 Jam rod 2 used 17 Cap screw 3 used per hub 5 Idler sprocket 2 used 12 Drive chain 2 used 18 Lock washer 3 used per hub 6 Lock nut 2 used 13 Lock nut 16 used 19 Idler sprocket jam nut 2 used 7 Sprocket hub 2 used Disassembly Fig 14 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Raise and support rear hood 3 Loosen jam nuts items 4 and 8 and jam rod item 11 to remove idler tension on drive chain 4 Rotate coring crankshaft until drive chain master link is located at gearbox sprocket Note direction of closed end of master link clip for assembly purposes Remove master link from drive chain Locate and remove master link O rings Coring Head SR75 Page 6 18 5 Remove drive chain from gearbox coring crankshaft and idler sprockets Fig 15 6 Ifnecessary remove sprocket s from gearbox shaft see Coring Head Drive Sprockets Disassembly in this section 7 If sprocket removal from coring crankshaft is neces sary remove coring crankshaft bearing housing that in cludes sprocket and remove sprocket from crank arm see Coring Crankshaft Bearing Housing Removal in this section 8 If necessary remove idler assembly using Figure 14 as a guide ProCore SR Series Assembly Fig 14 1
49. ear lube 2 US quarts 1 9 liters 109 Ibs 50 kg ProCore SR72 Aerating Width Number of Connecting Rods Number of Rollers Depth Adjustment Gearbox Lubricant Gearbox Lubricant Capacity Gearbox Weight approximate 72 inches 1 83 meters 6 1 Hydraulic Top Link SAE 80W 90 gear lube 4 US quarts 3 8 liters 220 Ibs 100 kg Coring Head SR48 amp SR72 Page 5 2 ProCore SR Series This page is intentionally blank o N N mr TY D Eg oO ProCore SR Series Page 5 3 Coring Head SR48 amp SR72 General Information Coring Head PROCORE SR72 CORING HEAD SHOWN aa Figure 1 1 Aerator frame 2 Coring crankshaft assembly 3 Tine holder The coring head of a ProCore SR deep tine aerator con sists ofthe aerator frame a coring crankshaft assembly tine holders and aerating tines The rotat
50. earings 6 Slide clipped washer item 9 onto crank pin item 15 and align washer flat with step in crank arm Thread hex nut item 8 onto crank pin 7 Install removed linkage arm to side of connecting rod see Assembly of Linkage Arm Assemblies in this sec tion 8 Properly torque fasteners A Torque flange nuts item 7 that secure linkage arm to 300 ft lb 407 N m B Torque hex nut item 8 on crank pin to 950 ft lb 1288 N m 9 After assembly rotate coring crankshaft by hand to make sure that no binding occurs 10 Lower and secure rear hood Coring Head SR48 amp SR72 ge i T le i fe S T N o N o oe q aal o Coring Crankshaft SR48 PROCORE SR48 CORING CRANKSHAFT VIEWED FROM REAR H Let Ef of a ital ty 8 Figure 10 1 Crank arm 2 used 2 Crank arm 2 used 3 Crank arm 4 used The ProCore SR48 coring crankshaft uses three 3 dif ferent crank arms For identification purposes the crank arms and crankshaft timing are shown in Figure 10 Re fer to your Parts Catalog to identify part numbers for crankshaft components Coring Head SR48 amp SR72 Page 5 12 ProCore SR Series Coring Crankshaft SR72 PROCORE SR72 CORING CRANKSHAFT VIEWED FROM REAR n2 gt n Figure 11 1 Crank arm 2 used 3 Crank arm 2 used 5 Crank arm 3 used 2 Crank arm 3 used 4 Crank arm 2 used The ProCore SR72 coring cr
51. eated in bearing cage B Press one bearing partially into yoke IMPORTANT Take care when installing cross into bearing to avoid damaging bearing seal C Carefully insert cross into bearing and yoke Chassis Page 3 12 D Hold cross in alignment and press bearing in until it hits the yoke E Carefully place second bearing into yoke bore and onto cross shaft Press bearing into yoke F Install snap rings to secure bearings in place G Repeat procedure for other yoke H Grease cross until grease comes out of all four 4 bearing cups 6 Make sure that assembled joint moves without bind ing Slight binding can usually be eliminated by lightly rapping the yoke lugs with a soft faced hammer If bind ing continues disassemble joint to identify source of binding 7 If driveshaft was separated for cross and bearing service install shields and assemble driveshaft halves 8 Install PTO driveshaftto aerator see PTO Driveshaft Installation in this section Figure 14 1 End yoke 2 Cross and bearing kit 3 Snap ring 4 used 4 Shaft yoke ProCore SR Series This page is intentionally blank ProCore SR Series Page 3 13 Chassis Hydraulic Top Link Figure 15 1 Shaft 8 O ring 15 Lock nut 2 Cap screw 2 used 9 Back up ring 16 Spacer 3 Retainer plate 10 O ring 17 Adapter 4 Retaining ring 11 Back up ring 18 Barrel 5 Wiper 12 O ring 19 Pin 6 Head 13 Piston 20 Cotter pin 7 B
52. eces sary do not simply remove shims from one side of output shaft assembly as this would affect output shaft endplay Shims must be moved from one side of the output shaft to the other side during backlash adjustment C If backlash is excessive greater than 0 012 move shim s item 19 from non gear side of gear box to the gear side of gearbox This shim movement will move bevel gear closer to the input shaft gear to reduce backlash D Ifbacklash is insufficient less than 0 010 move shim s item 19 from gear side of gearbox to the non gear side This shim movement will move bevel gear away from the input shaft gear to increase back lash E Recheck backlash after any shim change Re peat process until backlash is correct 7 Apply a light coating of Permatex No 2 to mating surface of cover plate item 14 Position cover plate to gearbox housing opening and secure with eight 8 cap screws and washers item 12 8 Carefully slide axle tube assemblies onto output shaft ends taking care to not damage seals Align mark er line on housing and axle tube Fig 5 Secure axle tubes to housing with socket head screws item 16 9 Apply alight coating of grease on lips and OD of input seal item 27 Install seal into gearbox bore taking care to not damage seal during installation Seal should be installed until it is flush to slightly recessed into gearbox bore ProCore SR Series
53. eded using Figure 5 as a guide 4 If necessary disassemble tine head assembly using Figure 6 as a guide 5 If necessary disassemble hinge assembly using Figure 7 as a guide 6 Discard all removed bearings Assembly Fig 5 1 Iftine head Fig 6 or hinge Fig 7 assemblies were disassembled A Make sure that retaining rings are fully seated into grooves in housing B Press anew bearing into one side of the housing until it contacts installed retaining ring Then press second new bearing into housing so that it contacts first bearing C Insert inner bushing into housing D Press final two 2 new bearings into housing fol lowing above procedure E Make sure that inner bushing is centered in hous ing 2 Apply antiseize lubricant to wrist pins items 5 and 14 NOTE When installing wrist pins items 5 and 14 use bullet tool SG255002 see Special Tools in this chapter to prevent wrist pin thread damage 3 Assemble linkage arm components using Figure 5 as a guide Torque flange nuts item 7 to 300 ft lb 407 N m ProCore SR Series Page 5 9 4 Make sure that spring wires are not broken or crossed Fig 8 Install both spring assemblies to rear spring post item 8 and front spring holder item 16 Figure 6 1 Tine head housing 4 Inner bushing 2 Bearing 5 Outer bushing 3 Retaining ring Figure 7 1 Hinge housing 4 2 Bearing 3 Retaining ring Inner bushing 5 Outer bus
54. ee eee eee 1 oo EQUIVALENTS AND CONVERSIONS 2 g Decimal and Millimeter Equivalents 2 2 5 U S to Metric Conversions 00 2 c TORQUE SPECIFICATIONS 2 000 3 2 E Fastener Identification 0 00 3 Bo Standard Torque for Dry Zinc Plated and as Steel Fasteners Inch Series 4 Standard Torque for Dry Zinc Plated and Steel Fasteners Metric Fasteners 5 Other Torque Specifications 6 Conversion Factors 000 cece ee ee eae 6 Product Records Insert Operator s Manual and Parts Catalog for your ProCore SR Series deep tine aerator at the end of this chapter Additionally if any optional equipment or ac cessories have been installed to your ProCore insert the Installation Instructions Operator s Manuals and Parts Catalogs for those options at the end of this chap ter Maintenance Maintenance procedures and recommended service in tervals for the ProCore SR Series deep tine aerator are covered in the Operator s Manual Refer to that publica tion when performing regular equipment maintenance ProCore SR Series Page 2 1 Product Records and Maintenance Decimal and Millimeter Equivalents Equivalents and Conversions Fractions Decimals mm Fractions Decimals mm 1 64 0 015625 0 397 33 64 0 515625 13 097 1 32 0 08125 0 794 17 382 0 53125 13 494 3 64 0 046875 1 191 35
55. embly Square key 2 used Lock washer 3 used per hub Idler sprocket jam nut 2 used ProCore SR Series Disassembly Fig 16 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Raise and support rear hood 3 Remove front screens see Covers Removal in the Service and Repairs section of Chapter 3 Chassis 4 Remove drive chains see Coring Head Drive Chain Disassembly in this section 5 Remove sprocket s from gearbox shaft A Measure distance from end of gearbox output shaft to location of sprocket hub for assembly pur poses Record measurement B Remove three 3 cap screws item 17 and lock washers item 18 that secure sprocket to sprocket hub IMPORTANT Excessive or unequal pressure on the cap screws can break the sprocket hub flange When removing sprocket from hub tight en screws progressively and evenly C Insert three 3 cap screws into threaded removal holes of the sprocket hub Tighten screws progres sively and evenly until the sprocket is loose on the hub Position sprocket away from hub D Remove set screw that secures sprocket hub to gearbox shaft E Remove hub sprocket and square key from gearbox shaft 6 If sprocket removal from coring crankshaft is neces sary remove coring crankshaft bearing housing that in cludes sprocket and remove sprocket
56. endplay in input shaft as sembly Gearbox Service x fe Q hm ja 1 IMPORTANT Before installing output shaft into gearbox housing input shaft bearing pre load must be checked and if necessary adjusted 3 Check and adjust input shaft bearing pre load A Use a piece of string and a spring scale to deter mine the resistance to rotate the input shaft Wrap the string around the input shaft and attach the spring scale to the string end B Once the input shaft is rotating the resistance to continue to rotate the shaft should be from 2 to 3 in Ibs 0 23 to 0 34 N m Repeat this process a few times until a consistent resistance is determined C If rotating resistance is below 2 in lb 0 23 N m add additional shim s behind the spacer on the input shaft If resistance is above 3 in Ib 0 34 N m re move shim s from behind the spacer D Retest rotating resistance after adding or remov ing shims E Continue shim placement until input shaft rotat ing resistance is consistently from 2 to 3 in lbs 0 23 to 0 34 N m 4 Install output shaft assembly into gearbox housing A Press non gear side bearing cone item 2 onto output shaft Make sure that bearing cone is pressed fully to shaft shoulder B Position bevel gear item 21 and gear side bear ing cone item 15 inside gearbox housing Make sure that bevel gear teeth mesh properly with gear on input shaft Slide output shaft through non gear sid
57. er 3 Outer bushing 8 Ball bearing 13 Crank arm 4 Connecting rod assembly 9 Cap screw 14 Spring pin 5 Hex nut 10 Bearing housing 15 Set screw IMPORTANT Before disassembling the coring crankshaft label location and orientation of all com ponents that are to be removed Correct component location and orientation are necessary for proper aerator operation NOTE The crankshaft bearing housing assemblies for ProCore SR54 and SR70 aerators are very similar The ProCore SR54 is shown in Figure 11 Coring Head SR54 amp SR70 Page 4 14 NOTE Many of the coring crankshaft components de pend on proper orientation Crank pin item 2 head position crank arm item 13 location on the coring crankshaft crank arm item 13 angle on the crank shaft item 11 crank shaft item 11 groove orientation and ball bearing item 8 flange direction all need to be cor rectly placed for proper aerator operation During bear ing housing removal carefully note position of components to allow proper assembly ProCore SR Series Removal Fig 11 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Unlatch open and support back cover to allow ac cess to coring crankshaft 3 If bearing housing with drive chain attached is to be removed remove coring head drive chain see Coring Head Drive Chain Remov
58. ervals for your ProCore aerator Refer to this publication for additional information when servicing the machine 2 Before servicing or making adjustments to aerator disengage tractor PTO position aerator on a level sur face and lower aerator to the ground Apply tractor park ing brake stop engine and remove key from the ignition switch 3 Make sure machine is in safe operating condition by keeping all nuts bolts and screws tight 4 Use care when checking or servicing the coring head wear gloves and use caution 5 Never step over the PTO shaft to reach other side of aerator Walk around the machine instead 6 The friction clutch on the PTO driveshaft may be come hot during use Make sure that clutch has cooled before performing any service on the driveshaft ProCore SR Series Page 1 3 3 Do not run tractor engine in a confined area without adequate ventilation Exhaust fumes are hazardous and could possibly be deadly 4 If abnormal aerator vibration is detected disengage PTO and stop tractor immediately Determine source of vibration and correct problem s before resuming the use of aerator 5 While operating the combination of the tractor and the ProCore aerator may exceed noise levels of 85dB A at the operator position Hearing protection is recommended for prolonged exposure to reduce the po tential of permanent hearing damage 6 Before leaving the operator s position of the tractor A Disengage
59. es onto roller shaft ends Do not tighten set screws in bearings at this time To prevent personal injury make sure that roller is supported as it is installed to the machine 3 Position roller with vertical roller bars and flange bea rings under raised aerator ProCore SR Series Page 3 5 NOTE Drop speed can be adjusted on the tractor Re fer to the Tractor Operator s Manual for additional infor mation 4 Start engine on tractor Slowly lower aerator to posi tion aerator frame to roller assembly Stop tractor engine and remove key from the ignition switch 5 Align holes in vertical roller bars with holes in aerator frame Make sure that bearing grease fittings point to front of aerator Secure both roller bars to frame with four 4 cap screws and lock nuts 6 Check that roller is free to rotate and no binding ex ists Center roller between bearings 7 Apply Loctite 242 or equivalent to threads of bear ing set screws Tighten two 2 set screws to secure each bearing locking collar to roller shaft 8 Lubricate grease fittings on bearings Figure 5 1 Bearing 2 Bearing housing 4 bolt 3 Set screw 2 used 4 Grease fitting Chassis Roller ProCore SR75 ANTISEIZE LUBRICANT ANTISEIZE LUBRICANT Figure 6 1 Aerator frame 2 Roller Roller Removal Fig 6 1 Position aerator on a firm level su
60. from one side box bores taking care to not damage seals during instal of output shaft assembly as this would affect lation Seals should be installed until they are flush to output shaft endplay Shims must be moved slightly recessed into gearbox bores from one side of the output shaft to the other side during backlash adjustment C If backlash is excessive greater than 0 012 move shim s item 3 from ball bearing side of gear box to the tapered bearing side of gearbox This shim movement will move bevel gear closer to the input shaft gear to reduce backlash Gearbox Service Page 7 8 ProCore SR Series This page is intentionally blank Gearbox ProCore SR Series Page 7 9 Gearbox Service Gearbox Service SR72 and SR75 Figure 4 1 Gearbox housing 10 Retaining ring 19 Shim set gear backlash 2 Tapered bearing non gear side 11 Breather plug 20 Retaining ring 3 Retaining ring 12 Cap screw with washer 8 used 21 Bevel gear 4 O ring 13 Output shaft 22 Axle tube 5 Axle tube 14 Cover plate 23 Shim set input shaft endplay 6 Bearing 15 Tapered
61. g head drive chain see Coring Head Drive Disassembly in this section As crankshaft components are removed from machine the crankshaft will become out of bal ance and may rotate quickly creating pinch points and potential for personal injury Be cau tious when disassembling the coring crankshaft IMPORTANT When loosening crank nut item 9 DO NOT use a pipe wrench or other adjustable wrench Damage to the crank nut item 9 crank shaft item 12 and crank pin item 7 may occur if adjustable wrench is used 4 Remove crank pins and connecting rods on both sides of bearing housing that is to be removed See Con necting Rod Removal in this section 5 Support bearing housing assembly to prevent it from falling Remove two 2 cap screws and lock nuts that secure bearing housing assembly to coring head frame Remove bearing housing assembly with crank arms at tached from machine 6 Disassemble bearing housing assembly IMPORTANT The crank arms on either side of a bearing housing may be different Before bearing housing disassembly make sure to note location and orientation of crank arms Incorrect alignment of crank arms will prevent smooth aerator operation and will lead to aerator damage A Note crank arm alignment with each other for as sembly purposes If desired use a marker to make a diagonal line across the bearing housing and crank arms for assembly purposes B Secure bearing housing assembly in a vi
62. ge bearings When removing the rear roller on these aerators the roller scraper will be removed as well 5 Remove cap screws and lock nuts that secure both flange bearings item 2 to aerator frame 6 Start engine on tractor Slowly raise aerator while al lowing roller to remain on the ground Stop tractor en gine and remove key from the ignition switch Support raised aerator to prevent it from lowering unexpectedly To prevent personal injury make sure that roller is supported as it is removed from the machine 7 Remove roller with flange bearings from under ma chine 8 Slide bearings from roller shaft ends Roller Installation Fig 1 1 Clean roller shaft ends and apply antiseize lubricant to shaft ends Slide bearings onto roller shaft ends Do not tighten set screws in bearings at this time To prevent personal injury make sure that roller is supported as it is installed to the machine 2 Position roller with flange bearings under raised aer ator NOTE Drop speed can be adjusted on the tractor Re fer to the Tractor Operator s Manual for additional infor mation 3 Start engine on tractor Slowly lower aerator to posi tion aerator frame to roller assembly Stop tractor engine and remove key from the ignition switch NOTE On ProCore SR54 S and SR70 S aerators make sure to install the rear roller scraper when instal ling the flange bearings ProCore SR Series Page 3 3 4 Align holes
63. h This three 3 foot long wrench can be used to loosen and remove the fasteners that secure coring head crankshaft crank arms and connecting rods Toro Part Number SG885300 Bullet Tools Use to protect threads of crankshaft components during assembly of crankshaft connecting rods and linkage arms The bullet tool should be installed onto the threads of the crankpin or linkage arm fastener to pre vent thread damage when component is installed NOTE On ProCore SR75 aerators bullet tool G255001 is used for the wrist pins that secure the link age arms Torque Multiplier Use in conjunction with an appropriate torque wrench to install and properly torque the fasteners that secure cor ing head crankshaft crank arms and connecting rods Obtain this tool locally Coring Head SR75 Page 6 6 Figure 2 G255000 13 8 16 gt 1 745 OD SG255001 11 4 12 gt 1 560 OD G255002 3 4 16 gt 0 980 OD Figure 3 Figure 4 ProCore SR Series in N o o This page is intentionally blank ge lt Da i fe S ProCore SR Series Page 6 7 Coring Head SR75 Service and Repairs Linkage Arm Assemblies 800 ft Ib 1085 N m FRONT ene Figure 5 1 Cap screw 7 Camber bracket 2 Wrist
64. hassis 3 Drain lubricant from gearbox 4 Disconnect PTO driveshaft from gearbox input shaft see PTO Driveshaft Removal in the Service and Re pairs section of Chapter 3 Chassis 5 Remove four 4 cap screws lock washers and flat washers that secure driveshaft shield item 19 to gear box Remove shield 6 Remove drive chains from gearbox sprockets see Coring Head Drive Chain Disassembly in this section 7 Remove drive sprocket and sprocket hub from both gearbox output shafts see Coring Head Drive Sprock ets Disassembly in this section 8 On SR70 aerators remove saddle bolts and lock nuts that secure gearbox flanges to aerator frame brack ets Fig 18 9 Remove four 4 cap screws and lock washers that secure gearbox to aerator frame To prevent personal injury make sure that gear box is supported as it is removed from the ma chine Refer to Specifications in this chapter for gearbox weight 10 Carefully remove gearbox from machine NOTE For gearbox disassembly and assembly infor mation refer to the Service and Repairs section of Chapter 7 Gearbox Service ProCore SR Series Page 4 23 PROCORE SR70 Figure 18 1 Gearbox 3 Lock nut 8 used 2 Saddle bolt 8 used PROCORE SR54 Figure 19 PROCORE SR70 Figure 20 Coring Head SR54 amp SR70 vR o x T N ol z fo o Gearbox Installation Fig 17 IMPORTANT If a gearbo
65. hat sealing surface of cover is not damaged Replace cover if necessary 3 Remove three 8 oil seals item 1 from gearbox housing taking care to not damage seal bores in hous ing Discard oil seals Gearbox Service Page 7 6 12 Cover plate 13 Input shaft 14 Plug 3 used 15 Inner bearing 16 Outer bearing 4 Use a press to remove output shaft and bearings from gearbox housing NOTE Shim set item 3 is used to adjust gearbox backlash When removing output shaft and bearings take note of location and number of shims to assist in as sembly process A Remove retaining ring item 2 and shim s item 3 from ball bearing side of gearbox housing B Support bevel gear item 11 to prevent it from fal ling C Press output shaft toward the ball bearing item 8 side of the housing to remove shaft Ball bearing should remain on shaft ProCore SR Series D Remove bevel gear and tapered bearing cone item 5 from housing E Press ball bearing from output shaft F Remove retaining ring item 2 shim s item 3 and tapered bearing cup from gearbox housing G Discard removed bearings 5 Use a press to remove input shaft and bearings from gearbox housing NOTE Shim set item 4 is used to adjust input shaft bearing pre load When removing input shaft take note of location and number of shims to assist in assembly process A Remove retaining ring item 10 and shim s item 4 from gearbox input
66. hers and flat washers 6 Connect PTO driveshaft to gearbox input shaft see PTO Driveshaft Installation in the Service and Repairs section of Chapter 3 Chassis 7 Fill gearbox with proper lubricant see Operator s Manual 8 Install screens to aerator See Covers Installation in the Service and Repairs section of Chapter 3 Chas sis ProCore SR Series Chapter 5 Coring Head SR48 amp SR72 TORO Table of Contents SPECIFICATIONS n arasan gearanan raa cece ee eee 2 GENERAL INFORMATION 0005 4 Coring Head 0 0 ed ee ed ee ee ed ee 4 Coring Head Adjustments ss ss ee ee 5 SPECIAL TOOLS i e fiw hie needs 6 SERVICE AND REPAIRS 000005 8 Linkage Arm Assemblies 0 005 8 Connecting Rods 0e cece eee 10 Coring Crankshaft SR48 12 Coring Crankshaft SR72 0000 13 Coring Crankshaft Bearing Housings 14 Coring Head Drive Chain 04 18 Coring Head Drive Sprockets 20 CETO 0 AR EE N HR EN 22 o N N mr TY D Eg oO ProCore SR Series Page 5 1 Coring Head SR48 amp SR72 Specifications Item Description ProCore SR48 Aerating Width Number of Connecting Rods Number of Rollers Depth Adjustment Gearbox Lubricant Gearbox Lubricant Capacity Gearbox Weight approximate 48 inches 1 22 meters 4 1 Hydraulic Top Link SAE 80W 90 g
67. hield item 20 to gearbox and secure with four 4 cap screws lock washers and flat washers 6 Connect PTO driveshaft to gearbox input shaft see PTO Driveshaft Installation in the Service and Repairs section of Chapter 3 Chassis 7 Fill gearbox with proper lubricant see Operator s Manual 8 After assembly rotate coring crankshaft by hand to make sure that no binding occurs 9 Install screens to aerator see Covers Installation in the Service and Repairs section of Chapter 3 Chas sis Figure 21 Coring Head SR48 amp SR72 ge amp lt Da i fe S T N o N o ee q aal o This page is intentionally blank Coring Head SR48 amp SR72 Page 5 24 ProCore SR Series Chapter 6 Coring Head SR75 TORO Table of Contents SPECIFICATIONS n arasan gearanan raa cece ee eee 2 GENERAL INFORMATION 0005 4 Coring Head 0 0 ed ee ed ee ee ed ee 4 Coring Head Adjustments iii ie se ed ee 5 SPECIAL TOOLS i e fiw hie needs 6 SERVICE AND REPAIRS 000005 8 Linkage Arm Assemblies 0 005 8 Connecting Rods 0 cee eee eee ee 10 Coring Crankshaft 0002 eee ee ee 12 Coring Crankshaft Bearing Housings 14 Coring Head Drive Chain 18 Coring Head Drive Sprockets 20 Gearbox ve dt ER TE EE EE 22 Ke oO Lo IR dD fn _ e 6 ProCore SR Serie
68. hing Figure 8 1 Spring assembly 2 Rear spring post 3 Front spring holder 4 Crossed spring wires Coring Head SR48 amp SR72 ge i lt le i fe S T N o N o ee q aal o Connecting Rods PROCORE SR72 SHOWN ANTISEIZE LUBRICANT ANTISEIZE 950 ft lb LUBRICANT 1288 N m 300 ft Ib 7 lt 407 N m Figure 9 1 Connecting rod 7 Flange nut 12 Retaining ring 2 Spacer 8 Hex nut 13 Spacer 3 Retaining ring 9 Clipped washer 14 Crank arm 4 Bearing 10 Crank arm 15 Crank pin 5 Outer bushing 11 Bearing 16 Wrist pin 6 Linkage arm IMPORTANT Before disassembling the coring NOTE The connecting rod assemblies for ProCore crankshaft label location and orientation of compo SR48 and SR72 series aerators are very similar The nents that are to be removed Correct component ProCore SR72 is shown in Figure 9 location and orientation are necessary for proper aerator operation Coring Head SR48 amp SR72 Page 5 10 ProCore SR Series Removal Fig 9 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Unlatch open and support rear hood to allow access to coring crankshaft 3 Rotate coring crankshaft to allow access
69. his section 6 Rotate coring crankshaft to allow access to hex nuts item 5 that secure crank arms and connecting rods on both sides of crankshaft bearing housing 7 Insert block of wood between aerator frame and con necting rod to prevent the crankshaft from turning Torque hex nuts item 5 that secure crank arms and connecting rods on both sides of crankshaft bearing housing to 950 ft Ib 1288 N m 8 Tighten set screws item 15 to secure ball bearing flange to crank shaft 9 After assembly rotate coring crankshaft by hand to make sure that no binding occurs IMPORTANT When installing coring head drive chains make sure that one of the chains is installed and properly tensioned before installing second chain 10 If removed install coring head drive chain see Cor ing Head Drive Chain Installation in this section Make sure that coring crankshaft is properly positioned before installing drive chain and also that chain is properly ten sioned after installation 11 Lower and secure back cover ProCore SR Series This page is intentionally blank sR o ME IA ol E o OG ProCore SR Series Page 4 17 Coring Head SR54 amp SR70 Coring Head Drive Chain PROCORE SR54 SHOWN Figure 13 1 Cap screw 6 LH idler bracket 2 Cap screw 7 Lock nut 3 Idler sprocket 8 Idler rod 4 Offset spacer 9 Drive chain 5 Lock nut NOT
70. ing Do not tighten bearing set screws item 15 at this time D If sprocket is attached to either of the removed crank arms install spacer to both sides of bearing housing Fig 13 E Using notes made during disassembly properly orientate second crank arm items 6 or 13 and slide onto crank shaft F Place four 4 dowel pin bullets item 5 to each crank arm G Install locking plate and crank shaft nut onto crank shaft threads to secure crank arm to crank shaft Make sure that shoulder on nut fits into hole in locking plate H Secure bearing housing assembly in a vise and fully tighten crank shaft nuts to secure assembly Torque nuts to 1200 ft lb 1627 N m 3 Position bearing housing assembly to aerator frame Install two 2 cap screws and lock nuts to secure bear ing housing assembly to coring head frame Coring Head SR48 amp SR72 Page 5 16 Figure 15 3 Set screw 4 Ball bearing 1 Bearing housing 2 Retaining ring 4 Install crank pins and connecting rods on both sides of bearing housing see Connecting Rod Installation in this section 5 Rotate coring crankshaft to allow access to nuts items 2 and 9 that secure crank arms and connecting rods on both sides of crankshaft bearing housing 6 Insert block of wood between aerator frame and con necting rod to prevent the crankshaft from turning Torque hex nuts item 2 that secure crank pins to 950 ft Ib 1288 N m Torque crank sh
71. ing crankshaft assembly operates a number of connecting rods with linkage arm assemblies to provide effective tine motion for deep turf aeration The SR48 and SR72 aerator frames pivot on a single roller to allow aerating depth control Drive for the coring head is provided by the towing trac tor PTO output shaft A gearbox on the ProCore aerator is rotated by a driveshaft connected to the tractor PTO shaft The aerator gearbox provides rotation for the cor ing head crankshaft assembly with two 2 drive chains The drive chains are each tensioned by an adjustable idler sprocket Coring Head SR48 amp SR72 4 Connecting rod 5 Linkage arm assembly 6 Drive chain sprocket Page 5 4 7 Crank arm 8 Bearing housing assembly The coring crankshaft is composed of multiple crank arms bearings bearing housings and crank shafts The crankshaft assembly is designed and assembled to en sure minimal vibration during aerator operation A variety of tines and tine heads are available for use on ProCore SR Series aerators Refer to the Operator s Manual for available options ProCore SR Series Coring Head Adjustments See Operator s Manual for adjustment procedures for the coring head on your ProCore SR series aerator A CAUTION Never work on the aerator with the tow tractor PTO engaged or engine running Always disen gage the PTO stop tractor engine remove key from the ignition switch and wait for all machine move
72. ing hous ing disassembly make sure to note location and ori entation of crank arms A Note crank arm alignment with each other for as sembly purposes Incorrect alignment of crank arms will prevent smooth aerator operation and will lead to aerator damage If desired use a marker to make a diagonal line across the bearing housing and crank arms for assembly purposes B Secure bearing housing assembly in a vise C Bend locking plate item 10 away from crank shaft nut item 9 that secures one of the crank arms item 4 or 13 to crank shaft item 12 Remove the crank shaft nut D Slide crank arm from crank shaft Locate and re trieve four 4 dowel pin bullets item 5 from crank arm ProCore SR Series Page 5 15 E If sprocket is attached to the removed crank arm remove spacer from both sides of bearing housing Fig 13 F If sprocket is attached to removed crank arm re move sprocket if necessary Fig 14 G Loosen set screws that secure bearings to crank shaft H Slide crank shaft with attached crank arm from bearing housing If necessary remove retaining rings and bearing from bearing housing Fig 15 Note orientation of bearing flange for assembly purposes Discard bear ing if removed from housing J If removal of the second crank arm is necessary make sure that alignment of crank arm to crank shaft is noted and then remove locking plate crank shaft nut and second crank arm from crank shaf
73. ing ring is fully seated in shaft groove and that there is no endplay in input shaft assembly B Remove retaining ring item 16 IMPORTANT Before installing output shaft into gearbox housing input shaft bearing pre load C Press bearing item 15 from axle tube Discard must be checked and if necessary adjusted removed bearing 3 D Remove and discard O ring item 20 from inner flange of axle tube 8 Thoroughly clean and inspect all gearbox compo nents Replace all worn or damaged parts Gearbox Assembly Fig 1 1 Assemble axle tubes A Press new bearing item 15 into axle tube Make sure that bearing is pressed fully to shoulder in tube B Install retaining ring item 16 Make sure that re taining ring is fully seated in retainer groove C Apply a light coating of grease on lips and OD of new oil seal item 17 Install new seal into axle tube Oil seal should be flush to slightly recessed into axle tube bore D Lightly grease and install new O ring item 20 to inner flange of axle tube ProCore SR Series Page 7 3 Check and adjust input shaft bearing pre load A Use a piece of string and a spring scale to deter mine the resistance to rotate the input shaft Wrap the string around the input shaft and attach the spring scale to the string end B Once the input shaft is rotating the resistance to continue to rotate the shaft should be from 2 to 3 in Ibs 0 23 to 0 34 N m Repeat this process a fe
74. into threaded aluminum or brass The specific torque value should be determined based on the fastener size the aluminum or base material strength length of thread engagement etc ProCore SR Series 26 3N m 52 5N m 90 10 N m 225 20 N m 440 45 N m Page 2 5 27 2 ft lb 36 3 N m NOTE The nominal torgue values listed above are based on 75 of the minimum proof load specified in SAE J1199 The tolerance is approximately 10 of the nominal torgue value Product Records and Maintenance 2 xe hm fe Oo Q x S gt ge e hm O and Maintenance Other Torque Specifications SAE Grade 8 Steel Set Screws Wheel Bolts and Lug Nuts Thread Size Square Head Hex Socket 7 16 20UNE 65 10 ft lb 88 14N m Grade 5 5 16 18 UNC 215 35 in Ib 145 20 in Ib Grade 5 1 2 20 UNF 80 10 ft lb f 108 14 N m 3 8 16 UNC 35 10 ft lb 18 3 ft lb M12 X 1 25 80 10 ft lb f 108 14 N m Class 8 8 1 2 13 UNC 75 15 ft lb 50 10 ft lb M12 X 1 5 80 10 ft lb f 108 14N m Class 8 8 For steel wheels and non lubricated fasteners Thread Cutting Screws Thread Cutting Screws Zinc Plated Steel Zinc Plated Steel Type 1 Type 23 or Type F Thread Size Baseline Torque No 6 32 UNC 20 5 in Ib No 8 32 UNC 30 5in Ib Baseline Torque Type A Type B No 10 24 UNC 38 7 in Ib 1 4 20 UNC 85 15 in Ib 5 16 18 UNC 110 20 in lb Hole size material stre
75. ll gearbox compo nents Replace all worn or damaged parts B Support bevel gear item 21 to prevent it from fal ling Gearbox Assembly Fig 4 C Press output shaft through the bevel gear to re 1 Assemble axle tubes move shaft The gear side bearing cone item 15 will be removed during shaft removal The non gear side bearing item 2 should remain on shaft D Remove bevel gear and gear side bearing cone item 15 from housing E Remove non gear side bearing item 2 from out put shaft F Remove retaining ring item 20 and shim s item 19 from gear side of gearbox housing Re move gear side bearing cup item 15 from housing G Discard removed bearings 6 Use a press to remove input shaft and bearings from gearbox housing A Remove oil seal item 27 from gearbox housing Discard oil seal NOTE Shim set item 23 is used to adjust input shaft bearing pre load When removing input shaft take note of location and number of shims to assist in assembly process B Remove retaining ring item 10 spacer item 25 and shim s item 23 from gearbox input shaft bore C Press input shaft toward rear opening of gearbox housing to remove shaft D Remove outer bearing cone and both input shaft bearing cups from gearbox housing E Using a press remove inner bearing cone from input shaft F Discard removed bearings 7 Disassemble axle tubes A Remove retaining ring item 3 and seal retainer a
76. location and orientation of all com ponents that are to be removed Correct component location and orientation are necessary for proper aerator operation NOTE The crank shafts that have two 2 crank arms attached can be identified by engravings on one end of the crank shaft When assembled the engraving should be orientated toward the left side of the machine when viewed from the rear Refer to Coring Crankshaft in this section for crankshaft illustration Fig 10 Coring Head SR75 Connecting rod assembly Page 6 14 11 Bearing housing assembly 12 Crank shaft 13 Crank arm 14 Crank arm 0 Spring pin 4 per bearing housing NOTE Many of the coring crankshaft components de pend on proper orientation Crank pin item 7 head position crank arm location on the coring crankshaft crank arm angle on the crank shaft item 12 and bearing housing item 11 ball bearing flange direction all need to be correctly placed for proper aerator operation Dur ing bearing housing removal carefully note position of components to allow proper assembly ProCore SR Series Removal Fig 11 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Unlatch open and support back cover to allow ac cess to coring crankshaft 3 If bearing housing with drive chain attached is to be removed remove corin
77. mentto stop before performing any service to aerator components o N N mr TY D Eg oO ProCore SR Series Page 5 5 Coring Head SR48 amp SR72 Special Tools Order special tools from your Toro Distributor Crankshaft Nut Wrench This three 3 foot long wrench can be used to loosen and remove the fasteners that secure coring head crankshaft crank arms and connecting rods Toro Part Number SG885300 Figure 2 Bullet Tools Use to protect threads of crankshaft components during assembly of crankshaft connecting rods and linkage G255000 arms The bullet tool should be installed onto the 13 8 16 gt threads of the crankpin or linkage arm fastener to pre 1 745 OD vent thread damage when component is installed NOTE On ProCore SR48 and SR72 aerators bullet tool SG255000 is used for the crankpin and tool G255002 is used for the wrist pins that secure the link age arms SG255001 11 4 12 gt 1 560 OD G255002 3 4 16 gt 0 980 OD Figure 3 Torque Multiplier Use in conjunction with an appropriate torque wrench to install and properly torque the fasteners that secure cor ing head crankshaft crank arms and connecting rods Obtain this tool locally Figure 4 Coring Head SR48 amp SR72 Page 5 6 ProCore SR Series This page is intentionally blank o N N mr TY D Eg oO Pr
78. n and frame Install two 2 cap screws and lock wash ers to secure front screen to frame channels C Secure top screen clip item 6 and front screen bracket item 7 to frame with cap screws and lock washers If removed secure rear hood to machine with two 2 cap screws item 13 4 Page 3 19 Lower and secure rear hood Chassis Covers ProCore SR75 Figure 19 1 Rear hood 5 Lock washer 38 used 9 Window plate 2 used 2 Cap screw 2 used 6 Cap screw 36 used 10 Spacer 2 used 3 LH end cover 7 RH front screen 11 Hex nut 2 used 4 LH front screen 8 RH end cover 12 Latch assembly 2 used Removal Fig 19 Installation Fig 19 1 Position aerator on a firm level surface If aerator is 1 Install rear hood and front screens using Figure 19 attached to tractor disengage PTO apply tractor park as a guide ing brake stop engine and remove key from the ignition switch 2 Remove rear hood and front screens using Figure 19 as a guide Chassis Page 3 20 ProCore SR Series Chapter 4 Coring Head SR54 amp SR70 TORO Table of Contents SPECIFICATIONS n arasan gearanan raa cece ee eee 2 GENERAL INFORMATION 20005 4 Coring Head 0 eee eee ee 4 Coring Head Adjustments 0055 6 SPECIAL TOOLS ii RE Re EE hie ncaa 4 7 SERVICE AND REPAIRS 000005 8 Linkage Arm Assemblies 00 005 8 Connecting
79. n Figure 18 Chassis Page 3 18 12 13 14 15 16 Latch assembly 2 used Cap screw 2 used Flat washer 12 used Lock washer 8 used Lock nut 8 used ProCore SR Series Removal Fig 18 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 4 If necessary remove rear hood A Unlatch rear hood B Remove two 2 cap screws item 13 that secure rear hood to frame C Remove rear hood from machine To remove front screen item 2 or 3 A Unlatch raise and support rear hood if it is at tached to frame B Support front screen to prevent it from falling C Remove cap screws and lock washers that se cure top screen clip item 6 and front screen bracket item 7 to frame D Remove two 2 cap screws and lock washers that secure front screen to frame channels Retrieve two 2 spacers item 5 from between screen and frame E Remove front screen from machine If necessary remove top screen clip item 6 and front screen bracket item 7 from front screen ProCore SR Series Installation Fig 18 1 If removed secure top screen clip item 6 and front screen bracket item 7 to front screen 2 3 To install front screen item 2 or 3 A Position front screen to machine B Place two 2 spacers item 5 between scree
80. n all corrosion and burrs from output shaft and input shaft to allow easier gearbox disassem bly 2 Use a marker to make a diagonal line across the housing and axle tubes for assembly purposes Fig 2 3 Carefully pry cover plate item 12 from rear of hous ing taking care to not damage housing opening Check that sealing surface of cover is not damaged Replace cover if necessary 4 Remove socket head screws item 19 that secure axle tubes items 18 and 21 to housing Slide axle tube assemblies from gearbox 5 Use a press to remove output shaft and bearings from gearbox housing Gearbox Service Page 7 2 NOTE Shim set item 3 is used to adjust gearbox backlash When removing output shaft take note of location and number of shims to assist in gearbox as sembly A Remove retaining ring item 2 and shim s item 3 from ball bearing item 8 side of gearbox housing B Support bevel gear item 11 to prevent it from fal ling during output shaft removal C Press output shaft toward the ball bearing side of the housing to remove shaft Ball bearing item 8 will be pressed out of housing during shaft removal Ta pered bearing cone item 5 and bevel gear will be re moved from shaft as the shaft is pressed out of housing D Remove bevel gear and tapered bearing cone from housing E Remove ball bearing from output shaft ProCore SR Series F Remove retaining ring item 2 shim s item 3 and tapere
81. n drive chains see Coring Head Drive Chain Assembly in this section 5 Install front screens to machine see Covers Installa tion in the Service and Repairs section of Chapter 3 Chassis 6 Lower and secure rear hood Figure 17 1 Drive chain 4 Gearbox sprocket 2 Jam rod 5 Idler sprocket 3 Jam nut Coring Head SR75 ge i I le i fe S in N o o Gearbox 1 Idler bolt 2 used 9 2 Master link assembly 2 used 10 3 Grooved washer 2 used 11 4 Jam nut 2 used 12 5 Idler sprocket 2 used 13 6 Lock nut 2 used 14 7 Sprocket hub 2 used 15 8 Jam nut 2 used 16 Coring Head SR75 Figure 18 Sprocket 2 used Saddle bolt 16 used Jam rod 2 used Drive chain 2 used Lock nut 16 used Idler bracket 2 used Gearbox assembly Square key 2 used Page 6 22 17 18 19 20 21 Lock washer 4 used 23 24 Cap screw 3 used per hub Lock washer 3 used per hub Idler sprocket jam nut 2 used PTO driveshaft shield Cap screw 4 used Flat washer 4 used PTO driveshaft ProCore SR Series Removal Fig 18 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Remove screens from aerator frame see Covers Removal in the Service and Repairs section of Chapter
82. ners Inch Series SAE Grade 8 Bolts Screws Studs amp Sems with Regular Height Nuts SAE Grade 5 Bolts Screws Studs amp Sems with Regular Height Nuts SAE J995 Grade 2 or Stronger Nuts Grade 1 5 amp 8 with Thin Height Nuts SAE Grade 1 Bolts Screws Studs amp Sems with Regular Height Nuts SAE J995 Grade 2 or Stronger Nuts SAE J995 Grade 5 or Stronger Nuts TEE EET inte 100 10 1125 100 140 15 1580 170 o tb o o Nm o ooo o on EE Thread Size 6 32 UNC 147 23 6 40 UNF 8 32 UNC 8 36 UNF 10 24 UNC 339 56 10 32 UNF 1 4 20 UNC 48 7 599 79 1 4 28 UNF 65 10 734 113 5 16 18 UNC 115 4 15 105 4 17 1186 169 5 16 24 UNF 138 17 128 17 1446 192 3 8 16 UNC 16 2 3 8 24 UNF 7 16 14 UNC 27 3 7 16 20 UNF 29 3 39 4 430 45 583 61 600 60 813 81 475 45 644 61 660 60 895 81 1 2 13 UNC 30 3 65 9 1 2 20 UNF 72 9 5 8 11 UNC 65 10 88 12 119 16 5 8 18 UNF 75 4 10 95 4 15 129 4 20 3 4 10 UNC 93 12 140 20 190 27 3 4 16 UNF 115 4 15 165 4 25 224 34 7 8 9 UNC 140 20 225 25 305 34 7 8 14 UNF 155 25 260 30 353 41 Spe aee EIER soe sa ESE aar es ese fse reunc es2 f iese wor rea exe mee ses ose ser ss mse oue ss ar eer es wear NOTE Reduce torgue values listed in the table above by 25 for lubricated fasteners Lubricated fasteners are
83. ngs bearing spacer and retaining rings from connecting rod Discard re moved bearings Installation Fig 8 1 If bearings were removed from upper bore of con necting rod install new bearings into upper bore A Install a retaining ring into one of the grooves in upper bore of rod Make sure that retaining ring is properly seated in groove B Press first ball bearing into connecting rod bore until the bearing contacts the installed retaining ring C Individually press three more bearings into con necting rod bore until the bearing contacts the pre viously installed bearing D After all four 4 bearings have been pressed into connecting rod bore install second retaining ring Make sure that retaining ring is properly seated in groove 2 If bearings were removed from lower bore of con necting rod install new bearings into lower bore A Install two 2 retaining rings into the grooves in lower bore of rod Make sure that retaining rings are properly seated in grooves ProCore SR Series Page 4 11 B Press anew bearing into one side of the connect ing rod bore until the bearing contacts installed re taining ring Then press second new bearing into bore so that it contacts first bearing C Insert bearing spacer into lower rod bore D Press final two 2 new bearings into housing fol lowing above procedure Make sure that bearing spacer is centered in rod bore 3 Apply antiseize lubricant liberally
84. ngth material thickness amp finish must be considered when determining specific torque 3 8 16 UNC 200 100 in Ib values All torque values are based on non lubricated 85 15 in lb 0 5in 16 7 in fasteners Conversion Factors in lb X 11 2985 N cm N cm X 0 08851 in Ib ft lb X 1 3558 N m N m X 0 7376 ft lb Product Records and Maintenance Page 2 6 ProCore SR Series Chapter 3 TORO Chassis Table of Contents GENERAL INFORMATION 0005 1 Operator s Manual 00 cece eens 1 SERVICE AND REPAIRS 000005 2 Roller ProCore SR54 SR54 S SR70 and SR70 S aunaren raa a eee ee 2 Roller ProCore SR48 and SR72 4 Roller ProCore SR75 0 cece eee ee 6 PTO Driveshaft 0 scene ee 8 PTO Driveshaft Clutch Service 10 PTO Driveshaft Cross and Bearing Service 12 Hydraulic Top Link 0 ee ee eee eee 14 Covers ProCore SR54 SR54 S SR70 and SR70 S 0 oia eee 16 Covers ProCore SR48 and SR72 18 Covers ProCore SR75 2 00 ee eee 20 General Information Operator s Manual The Operator s Manual provides information regarding the operation general maintenance and maintenance intervals for your ProCore aerator Refer to this publica tions for additional information when servicing the ma chine ProCore SR Series Page 3 1 Chassis Service and Repairs Roller
85. nkshaft bearing housing that in cludes sprocket and remove sprocket from crank arm see Coring Crankshaft Bearing Housing Removal in this section Assembly Fig 18 1 If coring crankshaft sprocket was removed secure sprocket to crank arm and install coring crankshaft bear ing housing see Coring Crankshaft Bearing Housing Installation in this section 2 Install sprockets to gearbox shaft A Make sure that tapered surfaces of sprocket and sprocket hub are thoroughly clean no oil grease dirt rust etc B Position square key in gearbox shaft slot Apply antiseize lubricant to bore of sprocket hub ProCore SR Series Page 5 21 C Slide sprocket and hub onto gearbox shaft mak ing sure that tapered surfaces of sprocket and hub align D Position hub location from end of gearbox shaft as measured before removal Secure hub to gearbox shaft with set screw IMPORTANT When securing sprocket and sprocket hub tighten cap screws in three 3 equal steps and in a circular pattern to prevent hub flange damage E Align threaded holes of sprocket with non threaded holes of sprocket hub and install three 3 cap screws item 24 with lock washers item 14 Tighten cap screws in three 3 equal steps and ina circular pattern to secure sprocket and sprocket hub F Install and tighten three cap screws item 25 with lock washers item 14 Tighten cap screws in three 3 equal steps and in a circular pattern 3 U
86. ns for the installation and tightening of fasteners shall apply to all fasteners which do not have a specific requirement identified in this Ser vice Manual The following factors shall be considered when applying torque cleanliness of the fastener use of a thread sealant e g Loctite degree of lubrication on the fastener presence of a prevailing torque feature hardness of the surface underneath the fastener s head or similar condition which affects the installation Fastener Identification Grade 1 Grade 5 Inch Series Bolts and Screws Figure 1 ProCore SR Series Page 2 3 As noted in the following tables torque values should be reduced by 25 for lubricated fasteners to achieve the similar stress as a dry fastener Torque values may also have to be reduced when the fastener is threaded into aluminum or brass The specific torque value should be determined based on the aluminum or brass material strength fastener size length of thread en gagement etc The standard method of verifying torque shall be per formed by marking a line on the fastener head or nut and mating part then back off fastener 1 4 of a turn Measure the torque required to tighten the fastener until the lines match up Class 8 8 Class 10 9 Metric Bolts and Screws Figure 2 Product Records and Maintenance 2 xe ham fe Oo Q x S gt ge o hm eN and Maintenance Standard Torque for Dry Zinc Plated and Steel Faste
87. oCore SR Series Page 5 7 Coring Head SR48 amp SR72 Service and Repairs Linkage Arm Assemblies Cap screw Flat washer Outer bushing Linkage arm spacer Wrist pin Connecting rod assembly Flange nut Rear spring post ONDARON 407 N m Figure 5 Cap screw Cap screw Linkage arm Outer bushing Spring assembly Wrist pin Cap screw Front spring holder NOTE The linkage arm assemblies for ProCore SR48 and SR72 series aerators are very similar The ProCore SR72 is shown in Figure 5 Coring Head SR48 amp SR72 Page 5 8 PROCORE SR72 SHOWN 300 ft Ib 407 N m ANTISEIZE LUBRICANT ANTISEIZE LUBRICANT 17 Tine head bolt 18 Tine head assembly 19 Bumper pad 20 Camber bracket 21 Lock nut 22 Lock nut 23 Lock nut 24 Hinge assembly ProCore SR Series Disassembly Fig 5 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch Be careful when removing the spring assembly The spring is under load and may cause personal injury during removal 2 Remove both spring assemblies from rear spring post item 8 and front spring holder item 16 3 Remove linkage arm components as ne
88. ocket is attached to removed crank arm re move sprocket if necessary Fig 12 ProCore SR Series Page 4 15 F Loosen set screws item 15 that secure bearing to crank shaft G Slide crank shaft with attached crank arm from bearing housing Note orientation of grooves in crank shaft for assembly purposes H If necessary remove retaining rings and bearing from bearing housing Note orientation of bearing flange for assembly purposes Discard bearing if re moved from housing If removal of the second crank arm is necessary make sure that alignment of crank arm to crank shaft is noted and then remove hex nut item 5 and sec ond crank arm from crank shaft 7 If necessary remove and discard spring pins item 14 Figure 12 1 Sprocket 2 Spacer 4 used 3 Crank arm 4 Lock washer 4 used 5 Cap screw 4 used Installation Fig 11 1 If bearing was removed from bearing housing install new bearing into housing A Install a retaining ring into one of the grooves in bearing housing Make sure that retaining ring is properly seated in groove B Position bearing to bearing housing so bearing flange orientation is correct Install new bearing into bearing housing by pressing on outer race of bear ing C Install second retaining ring into bearing housing groove to secure bearing Make sure that retaining ring is properly seated in groove 2 If spring pins item 14 were removed from frame
89. on at mid span between sprockets Make sure that cap screw item 2 is fully tightened after chain adjust ment is completed 6 Block crankshaft to prevent it from rotating Install and adjust second drive chain using procedure listed in step 5 above 7 Lower and secure rear hood and back to gearbox sprocket Fig 14 Do not allow Figure 14 lower run of chain to have excessive slack 1 Drive chain 3 Lock nut 2 Idler rod 4 Cap screw B Apply grease to master link O rings Place two 2 O rings on master link pins and install into ends of drive chain Place final two 2 O rings on master link pins and install side plate ProCore SR Series Page 4 19 Coring Head SR54 amp SR70 sR o ME ITA ol z fo op Coring Head Drive Sprockets PROCORE SR54 SHOWN Figure 15 1 Cap screw 8 Idler rod 2 Cap screw 9 Cap screw 3 used per hub 3 Idler sprocket 2 used 10 Lock washer 3 used per hub 4 Offset spacer 11 Set screw 5 Lock nut 12 Sprocket hub 2 used 6 LH idler bracket 13 Gearbox sprocket 2 used 7 Lock nut 14 Square key 2 used NOTE The coring head drive sprockets used on Pro Core SR54 and SR70 aerators are very similar The Pro Core SR54 is shown in Figure 15 Coring Head SR54 amp SR70 Page 4 20 15 16 17 Drive chain 2 used 19 20 21 Gearbox PTO driveshaft shield Master link assembly 2
90. ool 21 Head spacer 22 Flange bushing 23 Cap screw 24 Tine head 25 Set screw 26 Head spool 27 Lock nut 28 Head bumper ProCore SR Series NOTE The linkage arm assemblies for ProCore SR54 and SR70 aerators are very similar The ProCore SR54 linkage arm assembly is shown in Figure 5 The tine head assembly used on ProCore SR54 S and SR70 S is shown in Figure 6 Disassembly Fig 5 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Remove linkage arm components as needed using Figures 5 and 6 as guides 3 If necessary disassemble rear spool assembly us ing Figure 7 as a guide 4 Discard all removed bearings Assembly Fig 5 1 If rear spool assembly was disassembled Fig 7 A Make sure that retaining rings are fully seated into grooves in hinge housing B Press a new bearing into one side of the hinge housing until contacts installed retaining ring Then press second new bearing into housing so that it con tacts first bearing C Insert inner bushing into housing D Press final two 2 new bearings into housing fol lowing above procedure 2 Ifbearings item 7 were removed from linkage arms press new bearings into arms NOTE When installing cap screw item 2 use bullet tool SG255002 see Special Tools in this chapter to pre vent thread damage to screw
91. ox assembly and installation before proceeding with installation procedure ProCore SR Series Page 6 23 To prevent personal injury make sure that gear box is supported as it is installed to the machine Gearbox weighs approximately 220 pounds 100 kg 1 Position gearbox to aerator frame Secure gearbox to frame with four 4 cap screws and lock washers 2 Install and tighten saddle bolts item 10 to frame and gearbox flanges 3 Install drive chain sprocket and sprocket hub to both gearbox output shafts see Coring Head Drive Assem bly inthis section Make sure that drive chain is properly adjusted after assembly 4 Position driveshaft shield item 20 to gearbox and secure with four 4 cap screws lock washers and flat washers 5 Connect PTO driveshaft to gearbox input shaft see PTO Driveshaft Installation in the Service and Repairs section of Chapter 3 Chassis 6 Fill gearbox with proper lubricant see Operator s Manual 7 Install screens to aerator See Covers Installation in the Service and Repairs section of Chapter 3 Chas sis Figure 19 Coring Head SR75 ge lt Da i fe S in N o o This page is intentionally blank Coring Head SR75 Page 6 24 ProCore SR Series Chapter 7 TORO Gearbox Service Table of Contents GENERAL INFORMATION 20005 1 SERVICE AND REPAIRS 000005 2 Gearbox SR48 SR70 and S
92. pitting scoring and wear Replace any worn or damaged parts Assembly Fig 15 1 Make sure all hydraulic cylinder parts are clean be fore assembly 2 Coat new O rings back up rings and wiper with clean hydraulic oil Carefully install new back up rings O rings and wiper to head and piston IMPORTANT Do not clamp vise jaws against the shaft surface Clamp on the shaft clevis ONLY 3 Mount shaft securely in a vise by clamping on the cle vis of the shaft A Coat shaft with clean hydraulic oil B Slide retainer plate and then head onto the shaft Make sure that threaded holes in head are toward the retainer plate location C Install piston onto the shaft and secure with lock nut D Remove shaft assembly from the vise ProCore SR Series Page 3 15 4 Coat all internal parts with a light coat of clean hy draulic oil Slide shaft head and piston assembly into the barrel being careful not to damage the seals 5 Secure head in barrel with retaining ring Make sure that retaining ring is fully seated in groove in barrel 6 Pull shaft so that head is at top of barrel Position re tainer plate to barrel and head Secure retainer plate with two 2 cap screws 7 Slide spacers item 16 into cylinder shaft clevis and adapter on barrel end 8 Install hydraulic top link to aerator and tractor Fig 16 Figure 16 1 Hydraulic top link 6 Hydraulic hose 2 Adapter 7 Hydraulic hose 3 Pin 8 Link 4
93. rank arm and install coring crankshaft bear ing housing see Coring Crankshaft Bearing Housing Installation in this section 2 If sprockets were removed from gearbox shaft install sprockets to gearbox shaft see Coring Head Drive Sprockets Assembly in this section 3 If idler assembly parts were removed from frame install idler components using Figure 13 as a guide 4 Using a suitable straight edge check that alignment between gearbox coring crankshaft and idler sprockets is correct If needed adjust sprocket location on gear box shaft to align sprockets see Coring Head Drive Sprockets Assembly in this section IMPORTANT When installing drive chains install and properly tension one of the drive chains Then install and tension the second chain 5 If both drive chains were removed install first chain A Position drive chain to gearbox sprocket pull low er run of chain tight and align with coring crankshaft sprocket teeth If necessary slightly rotate coring crankshaft so that chain remains tight when aligned with sprocket teeth Route chain over idler sprocket C Install master link clip so that the closed end is facing the direction of chain rotation IMPORTANT To prevent gearbox damage do not overtighten drive chains Drive chains should have 1 2 12 7 mm total deflection when properly adjusted D Adjust idler sprocket location with lock nut item 5 so that chain has 1 2 12 7 mm total deflecti
94. re 1 745 OD vent thread damage when component is installed vR oc T N ol z fo OG NOTE On ProCore SR54 and SR70 aerators bullet tool SG255001 is used for the crank pin and crank shaft Tool SG255002 is used for the cap screws that secure the linkage arms SG255001 11 4 12 gt 1 560 OD G255002 3 4 16 gt 0 980 OD Figure 3 Torque Multiplier Use in conjunction with an appropriate torque wrench to install and properly torque the fasteners that secure cor ing head crankshaft crank arms and connecting rods Obtain this tool locally Figure 4 ProCore SR Series Page 4 7 Coring Head SR54 amp SR70 Service and Repairs Linkage Arm Assemblies 1 Cap screw 2 Outer bushing 3 Cap screw 4 Linkage arm 5 Cap screw 6 Outer bushing 7 Ball bearing 8 Outer bushing 9 Connecting rod 10 Linkage spacer Coring Head SR54 amp SR70 Figure 5 Rubber bumper Rubber bumper Lock nut Lock nut Rear spring bracket Rear spool assembly Cap screw Lock nut Spring assembly Page 4 8 PROCORE SR54 SHOWN ANTISEIZE LUBRICANT ANTISEIZE LUBRICANT 20 Rear spring sp
95. re SR Series Chapter 1 Safety Table of Contents SAFETY INSTRUCTIONS 00020005 2 Before Operating 0 cece Re ee eee 2 While Operating 00 cee eee eee ee 3 Maintenance and Service 4 3 SAFETY AND INSTRUCTION DECALS 4 ProCore SR Series Page 1 1 Safety Safety Instructions The ProCore SR series of deep tine aerators are de signed and tested to offer safe service when operated and maintained properly Although hazard control and accident prevention partially are dependent upon the design and configuration of the machine these factors are also dependent upon the awareness concern and proper training of the personnel involved in the opera tion transport maintenance and storage of the ma chine Improper use or maintenance of the machine can result in injury or death To reduce the potential for injury or death comply with the following safety instructions Before Operating 1 Review and understand the contents of the Opera tor s Manual before starting and operating the vehicle Become familiar with the controls and know how to stop the vehicle and engine quickly Additional copies of the Operator s Manual are available on the internet at www Toro com 2 Keep all shields safety devices and decals in place If a shield safety device or decal is defective illegible or damaged repair or replace it before operating the machine Safety
96. re that retaining ring is fully seated in hous ing groove 4 Check that there is no end play in the output shaft and that output shaft bearings are not pre loaded If out put shaft end play is determined add additional shim s item 3 as needed If bearing pre load drag is deter mined remove shim s Gearbox Service x fe Q hm 2 5 Check gearbox backlash IMPORTANT Correct engagement between bevel gear and input shaft gear is critical to gearbox per formance and durability A Position a dial indicator at the center of a tooth on the bevel gear D Ifbacklash is insufficient less than 0 010 move shim s item 3 from tapered bearing side of gear box to the ball bearing side of gearbox This shim movement will move bevel gear away from the input shaft gear to increase backlash E Recheck backlash after any shim change Re peat process until backlash is correct B While preventing the input shaft from turning ro 6 Apply light coating of Permatex No 2 to sealing tate the bevel gear and monitor the dial indicator surface of cover plate item 12 Use a soft face hammer reading to check gearbox backlash Allowable back to drive cover plate into housing lash is from 0 010 to 0 012 0 25 to 0 30 mm 7 Apply a light coating of grease on lips and OD of IMPORTANT If backlash adjustment is neces three 3 gearbox seals item 1 Install seals into gear sary do not simply remove shims
97. rface with aerator attached to tractor Disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Support aerator to prevent it from moving 3 Chock roller to prevent it from moving 4 Loosen two 2 set screws that secure each bearing locking collar to roller shaft Fig 7 5 Remove four 4 cap screws and lock nuts that se cure flange bearings item 4 to aerator frame Chassis 3 Cap screw 4 used per bearing 4 Flange bearing 2 used Page 3 6 5 Lock nut 4 used per bearing 6 Start engine on tractor Slowly raise aerator while al lowing roller assembly to remain on the ground Stop tractor engine and remove key from the ignition switch Support raised aerator to prevent it from lowering unex pectedly To prevent personal injury make sure that roller is supported as it is removed from the machine 7 Remove roller with flange bearings from under ma chine ProCore SR Series 8 Slide flange bearings from roller shaft ends Roller Installation Fig 6 1 Clean roller shaft ends and apply antiseize lubricant to shaft ends Slide flange bearing onto roller shaft ends Do not tighten set screws in bearings at this time A CAUTION To prevent personal injury make sure that roller is supported as it is installed to the machine Figure 7 2 Position roller with flange bearings under raised aer 1 Bearing 3 Set screw 2 used ator 2
98. ring Housing Removal in this section Assembly Fig 15 1 If coring crankshaft sprocket was removed secure sprocket to crank arm and install coring crankshaft bear ing housing see Coring Crankshaft Bearing Housing Installation in this section 2 Install sprockets to gearbox shaft A Make sure that tapered surfaces of sprocket and sprocket hub are thoroughly clean no oil grease dirt rust etc ProCore SR Series Page 4 21 B Position square key in gearbox shaft slot Apply antiseize lubricant to bore of sprocket hub C Slide sprocket and hub onto gearbox shaft mak ing sure that tapered surfaces of sprocket and hub align D Position hub location from end of gearbox shaft as measured before removal Secure hub to gearbox shaft with set screw IMPORTANT When securing sprocket and sprocket hub tighten cap screws in three 3 equal steps and in a circular pattern to prevent hub flange damage E Align threaded holes of sprocket with non threaded holes of sprocket hub and install three 3 cap screws with lock washers Tighten cap screws in three 3 egual steps and in a circular pattern to se cure sprocket and sprocket hub 3 Using a suitable straight edge check that alignment between gearbox coring crankshaft and idler sprockets is correct If needed readjust sprocket location on gear box shaft to align sprockets 4 Install and tension drive chains see Coring Head Drive Chain Assembly in thi
99. rk ing brake stop engine and remove key from the ignition switch Coring Head SR54 amp SR70 Page 4 10 2 Unlatch open and support rear hood to allow access to coring crankshaft 3 Rotate coring crankshaft to allow access to crank pin item 1 and hex nut item 14 for connecting rod to be removed 4 Insert block of wood between aerator frame and con necting rodto preventthe crankshaft from turning Using crankshaft nut wrench see Special Tools loosen but do not remove hex nut item 14 5 Support connecting rod that is to be removed to pre vent it from falling ProCore SR Series As crankshaft components are removed from machine the crankshaft will become out of bal ance and may rotate quickly creating pinch points and potential for personal injury Be cau tious when disassembling the coring crankshaft IMPORTANT When removing cap screw item 2 and crank pin item 1 note orientation for proper assembly 6 For connecting rod that is to be removed remove lock nut item 12 and cap screw item 2 that secure lower end of connecting rod to linkage arms 7 For connecting rod that is to be removed remove hex nut item 14 clipped washer item 13 andcrank pin item 1 that secure upper end of connecting rod to cor ing crankarms 8 Remove connecting rod from aerator Locate and re trieve outer bushings items 3 and 6 from both ends of connecting rod 9 If necessary remove ball beari
100. rms and connecting rods on both sides of crankshaft bearing housing IMPORTANT When tightening crank nut item 9 DO NOT use a pipe wrench or other adjustable wrench Damage to the crank nut item 9 crank shaft item 12 and crank pin item 7 may occur if adjustable wrench is used 7 Insert block of wood between aerator frame and con necting rod to prevent the crankshaft from turning Torque crank nuts item 9 that secure crank arms and connecting rods on both sides of crankshaft bearing housing to 1200 ft Ib 1627 N m 8 After assembly rotate coring crankshaft by hand to make sure that no binding occurs 9 Install cotter pins item 3 in removed crank nuts IMPORTANT When installing coring head drive chains make sure that one of the chains is installed and properly tensioned before installing second chain 10 If removed install coring head drive chain see Cor ing Head Drive Assembly in this section Make sure that chain is properly tensioned 11 Lower and secure back cover ProCore SR Series in N o o This page is intentionally blank ge lt Da i fe S ProCore SR Series Page 6 17 Coring Head SR75 Coring Head Drive Chain Figure 14 1 Idler bolt 2 used 8 Jam nut 2 used 14 Idler bracket 2 used 2 Master link assembly 2 used 9 Sprocket 2 used 15 Gearbox assembly 3 Grooved washer 2 used 10 Saddl
101. s previously installed bearing D Install second retaining ring into groove in hous ing bore Make sure that retaining ring is properly seated in groove 2 If spring pins were removed drive new spring pins into frame holes 3 Install components into bearing housing assembly A If either of the removed crank arms included a drive sprocket install sprocket if it was removed Fig 12 Make sure that crank pin is installed into crank arm before sprocket is installed B If both crank arms were removed from crank shaft use notes made during disassembly to proper ly orientate one of the crank arms and slide onto crank shaft Install crank shaft nut onto crank shaft threads to secure crank arm to crank shaft C Apply antiseize lubricant liberally to crank shaft item 12 Slide crank shaft into bearing housing as sembly D Using notes made during disassembly properly orientate second crank arm and slide onto crank shaft E Install crank nut onto crankshaft threads to se cure second crank arm to crank shaft Coring Head SR75 Page 6 16 4 Position bearing housing assembly to aerator frame Install and tighten two 2 cap screws and lock nuts to secure bearing housing assembly to coring head frame 5 Install crank pins and connecting rods on both sides of bearing housing see Connecting Rod Installation in this section 6 Rotate coring crankshaft to allow access to crank nuts item 9 that secure crank a
102. s Page 6 1 Coring Head SR75 Specifications Item Description ProCore SR75 Aerating Width 78 inches 1 98 meters Number of Connecting Rods 6 Number of Rollers 1 Depth Adjustment Hydraulic Top Link Gearbox Lubricant SAE 80W 90 gear lube Gearbox Lubricant Capacity 4 US quarts 3 8 liters Gearbox Weight 220 Ibs 100 kg Coring Head SR75 Page 6 2 ProCore SR Series in N o o This page is intentionally blank ge lt Da i fe S ProCore SR Series Page 6 3 Coring Head SR75 General Information Coring Head ef ar sI E gt 7 g Figure 1 1 Aerator frame 2 Coring crankshaft assembly 3 Tine holder The coring head of a ProCore SR75 deep tine aerator consists of the aerator frame a coring crankshaft as sembly tine holders and aerating tines The rotating crankshaft assembly operates six 6 connecting rods with linkage arm assemblies to provide effective tine motion for deep turf aeration The aerator frame pivots on a single roller to allow aerating depth control
103. s section 5 Install front screens to machine see Covers Installa tion in the Service and Repairs section of Chapter 3 Chassis 6 Lower and secure rear hood Figure 16 1 Drive chain 3 Lock nut 2 Jam rod 4 Cap screw Coring Head SR54 amp SR70 sR o ME ITA ol z fo o Gearbox PROCORE SR54 SHOWN Figure 17 1 Cap screw 9 Cap screw 3 used per hub 2 Cap screw 10 Lock washer 3 used per hub 3 Idler sprocket 2 used 11 Set screw 4 Offset spacer 12 Sprocket hub 2 used 5 Lock nut 13 Gearbox sprocket 2 used 6 LH idler bracket 14 Square key 2 used 7 Lock nut 15 Gearbox 8 Idler rod 16 Flat washer 4 used NOTE Gearbox removal and installation on ProCore SR54 and SR70 aerators is very similar The ProCore SR54 is shown in Figure 17 Coring Head SR54 amp SR70 Page 4 22 Lock washer 4 used Cap screw 4 used PTO driveshaft shield Master link assembly 2 used Drive chain 2 used Cap screw 4 used Lock washer 4 used RH idler bracket ProCore SR Series Gearbox Removal Fig 17 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Remove screens from aerator frame see Covers Removal in the Service and Repairs section of Chapter 3 C
104. se C Remove cotter pin item 3 and crank nut item 9 that secure one of the crank arms to crank shaft ProCore SR Series Page 6 15 D Slide crank arm from crank shaft E If sprocket is attached to removed crank arm re move sprocket if necessary Fig 12 F Slide crank shaft with attached crank arm from bearing housing assembly G Ifnecessary remove retaining rings and bearings from bearing housing Fig 13 Discard removed bearings H If removal of the second crank arm is necessary make sure that alignment of crank arm to crank shaft is noted and then remove cotter pin crank nut and second crank arm from crank shaft 7 If necessary remove and discard spring pins item Figure 12 Sprocket half 7 Crank pin Spacer 8 used 8 Screw 8 used Crank arm 9 Crank nut Lock nut 2 used Cap screw 2 used Dowel pin 10 Cotter pin 11 Crank shaft DOAPONT Figure 13 3 Bearing 1 Bearing housing 2 Retaining ring Coring Head SR75 ge lt Dn i fe S in N o o Installation Fig 11 1 If bearings were removed from bearing housing install new bearings into housing Fig 13 A Install one 1 retaining ring into groove in bore of housing Make sure that retaining ring is properly seated in groove B Press a new bearing into the housing bore until the bearing contacts the installed retaining ring C Press second bearing into bore so that it contact
105. sing a suitable straight edge check that alignment between gearbox coring crankshaft and idler sprockets is correct If needed readjust sprocket location on gear box shaft to align sprockets 4 Install and tension drive chains see Coring Head Drive Chain Assembly in this section 5 After assembly rotate coring crankshaft by hand to make sure that no binding occurs 6 Install front screens to machine see Covers Installa tion in the Service and Repairs section of Chapter 3 Chassis 7 Lower and secure rear hood Figure 19 1 Drive chain 4 Gearbox 2 Bolt 5 Crankshaft sprocket 3 Hex nut 6 Idler sprocket Coring Head SR48 amp SR72 ge i lt le i fe S T N o N o q aal o Gearbox PROCORE SR72 SHOWN Figure 20 1 Idler shaft 10 Saddle bolt 10 used 18 PTO driveshaft 2 Master link assembly 2 used 11 Lock washer 4 used 19 Square key 3 Jam nut grooved 12 Drive chain 2 used 20 Driveshaft shield 4 Jam nut 13 Lock nut 10 used 21 Cap screw 4 used 5 Idler sprocket 14 Lock washer 22 Lock washer 4 used 6 Lock nut 15 Gearbox assembly 23 Flat washer 4 used 7 Sprocket hub 2 used 16 Bolt 24 Cap screw 3 used per hub 8 Cap screw 4 used 17 Hex nut 25 Cap screw 3 used per sprocket 9 Sprocket 2 used NOTE Gearbox installation for ProCore SR48 and SR72 series aerators is very
106. ssembly items 4 7 and 9 from axle tube ProCore SR Series Page 7 11 A Press new bearing item 6 into axle tube bore Make sure that bearing is pressed fully to shoulder in axle tube B Apply a light coating of grease on lips and OD of new oil seal item 7 Install new oil seal into seal re tainer Make sure that seal is pressed fully to shoul der in seal retainer C Lightly grease and install new O ring item 4 into seal retainer groove D Install seal retainer assembly items 4 7 and 9 into axle tube and secure with retaining ring item 3 Make sure that retaining ring is fully seated in axle tube groove E Lightly grease and install new O ring item 8 to inner flange of axle tube Install new bearings and input shaft into gearbox housing A Press inner bearing cone fully onto input shaft B Installinner and outer bearing cups items 17 and 26 into gearbox housing bores C Install input shaft into gearbox housing through rear opening of housing D While supporting gear end of input shaft press outer bearing cone onto input shaft Bearing should fit into installed outer bearing cup in gearbox hous ing E Install the removed shim s item 23 spacer item 25 and retaining ring item 10 onto input shaft If necessary remove or add shims so that the spacer fits tightly between the shims and retaining ring Make sure that retaining ring is fully seated in shaft groove and that there is no
107. t Figure 13 1 Crank arm 4 Crank shaft 2 Spacer 5 Sprocket 3 Bearing housing 6 Crank arm Figure 14 1 Sprocket 4 Lock washer 4 used 2 Spacer 4 used 5 Cap screw 4 used 3 Crank arm Coring Head SR48 amp SR72 Coring Head SR48 amp SR72 Installation Fig 12 1 If bearing was removed from bearing housing install new bearing into housing Fig 15 A Install a retaining ring into one of the grooves in bearing housing Make sure that retaining ring is properly seated in groove B Position bearing to bearing housing so bearing flange orientation is correct Install new bearing into bearing housing by pressing on outer race of bear ing C Install second retaining ring into bearing housing groove to secure bearing Make sure that retaining ring is properly seated in housing groove 2 Install components into bearing housing assembly A lfaremoved crank arm included a drive sprocket install sprocket if it was removed Fig 14 B If both crank arms were removed from crank shaft use notes made during disassembly to proper ly orientate one of the crank arms items 6 or 13 and slide onto crank shaft Install locking plate and crank shaft nut onto crank shaft threads to secure crank arm to crank shaft Make sure that nut shoulder fits into hole in locking plate C Apply antiseize lubricant liberally to crank shaft item 12 Slide crank shaft with attached crank arm into bearing hous
108. t approximate 73 inches 1 85 meters 8 2 Fixed Top Link SAE 80W 90 gear lube 2 US quart 1 9 liter 109 Ibs 50 kg Coring Head SR54 amp SR70 Page 4 2 ProCore SR Series This page is intentionally blank sR o ME IA ol E o OG ProCore SR Series Page 4 3 Coring Head SR54 amp SR70 General Information Coring Head PROCORE SR54 CORING HEAD PROCORE SR70 CORING HEAD Figure 1 1 Aerator frame 4 Connecting rod 7 Crank arm 2 Coring crankshaft assembly 5 Linkage arm assembly 8 Bearing holder 3 Tine holder 6 Drive chain sprocket Coring Head SR54 amp SR70 Page 4 4 ProCore SR Series The coring head of a ProCore SR deep tine aerator con sists of the aerator frame a coring crankshaft assembly tine holders and aerating tines The rotating crankshaft assembly operates a number of connecting rods with linkage arm assemblies to provide effective tine motion for deep turf aeration The SR54 and SR70 aerator frames pivot on a single roller to allow aerating depth control The SR54 S and SR70 S aerators are equipped with dual rollers Drive for the coring head is provided by the towing trac tor PTO output shaft A gearbox on the ProCore aerator is rotated by a driveshaft connected to the tractor PTO shaft The aerator gearbox provides rotation for the cor ing head crankshaft assembly with two 2 drive chains The drive chains are each
109. t retaining ring is properly seated in groove 2 Apply antiseize lubricant to crank pin item 15 and wrist pin item 13 3 Place outer bushings item 9 to small lower end of connecting rod Position lower end of connecting rod as sembly to coring linkage arms NOTE When installing wrist pin item 13 use bullet tool SG255001 see Special Tools in this chapter to pre vent wrist pin thread damage 4 Slide wrist pin into linkage arms and connecting rod bearings 5 Place outer bushings item 5 to large upper end of connecting rod Position upper end of connecting rod assembly to crank arms Place dowel pins item 2 in crank arm bores Align crank pin item 15 to dowel pins and insert crank pin through crank arms and upper con necting rod bearings 6 Thread crank nut item 8 onto crank pin and lock nut item 16 to wrist pin IMPORTANT When tightening crank nut item 8 DO NOT use a pipe wrench or other adjustable wrench Damage to the crank nut item 8 and crank pin item 15 may occur if adjustable wrench is used 7 Properly torque connecting rod fasteners A Torque lock nuts item 16 that secure wrist pin to 800 ft lb 1085 N m B Torque crank nut item 8 on crank pin to 1200 ft Ib 1627 N m 8 After assembly rotate coring crankshaft by hand to make sure that no binding occurs 9 Install cotter pin item 7 10 Lower and secure rear hood Coring Head SR75 ge i lt Dn
110. the crankshaft will become out of bal ance and may rotate quickly creating pinch points and potential for personal injury Be cau tious when disassembling the coring crankshaft IMPORTANT When removing crank pin item 15 note head orientation for proper assembly 6 For connecting rod that is to be removed remove crank nut item 8 and crank pin item 15 that secure up per end of connecting rod to crank arm Locate and re trieve dowel pin item 2 from each crank arm 7 For connecting rod that is to be removed remove lock nut item 16 and wrist pin item 13 that secure low er end of connecting rod to coring linkage arms 8 Remove connecting rod assembly from aerator 9 As needed remove outer bushings retaining rings and ball bearings from upper and lower bores of con necting rod Discard all removed bearings Installation Fig 9 1 If bearings were removed from connecting rod bore s install new bearings into connecting rod A Install one 1 retaining ring into groove in bore of rod Make sure that retaining ring is properly seated in groove ProCore SR Series Page 6 11 B Press anew bearing into the connecting rod bore until the bearing contacts the installed retaining ring C Press remaining new bearings into bore so that they contact previously installed bearing D After all bearings have been installed install sec ond retaining ring into groove in connecting rod bore Make sure tha
111. this section 3 If idler assembly parts were removed from frame install idler components using Figure 16 as a guide Make sure that flat on head of idler shaft item 1 is posi tioned toward location of adjustment bolt item 16 Do not fully tighten grooved jam nut item 3 at this time 4 Using a suitable straight edge check that alignment between gearbox coring crankshaft and idler sprockets is correct If needed readjust sprocket location on gear box shaft to align sprockets IMPORTANT When installing drive chains install and properly tension one of the drive chains Then install and tension the second chain 5 If both drive chains were removed install first drive chain A Position drive chain to gearbox sprocket pull up per run of chain tight and align with coring crankshaft sprocket teeth If necessary slightly rotate coring crankshaft so that chain remains tight when aligned with sprocket teeth Route chain over idler sprocket and back to gearbox sprocket Fig 17 Do not allow upper run of chain to have excessive slack B Apply grease to master link O rings Place two 2 O rings on master link pins and install into ends of drive chain Place final two 2 O rings on master link pins and install side plate C Install master link clip so that the closed end is facing the direction of chain rotation ProCore SR Series Page 5 19 IMPORTANT To prevent gearbox damage do not overtighten drive chains
112. to crank pin item 15 and hex nut item 8 for connecting rod that is to be removed 4 Insert block of wood between aerator frame and con necting rodto prevent the crankshaftfrom turning Using crankshaft nut wrench see Special Tools loosen but do not remove hex nut item 8 5 Remove linkage arm from one side of connecting rod see Disassembly of Linkage Arm Assemblies in this section 6 Support connecting rod that is to be removed to pre vent it from falling As crankshaft components are removed from machine the crankshaft will become out of bal ance and may rotate quickly creating pinch points and potential for personal injury Be cau tious when disassembling the coring crankshaft IMPORTANT When removing crank pin item 15 note crank pin head orientation for proper assem bly 7 For connecting rod that is to be removed remove hex nut item 8 clipped washer item 9 and crank pin item 15 that secure upper end of connecting rod to cor ing crank arms 8 Remove connecting rod from aerator Locate and re trieve outer bushings item 5 from small end of connect ing rod 9 If necessary remove ball bearings bearing spacer and retaining rings from connecting rod Discard re moved bearings Installation Fig 9 1 If bearings were removed from upper bore of con necting rod install new bearings into upper bore A Install retaining rings into grooves in upper bore of rod Make sure that
113. ure that clutch has cooled before performing any service on the driveshaft Chassis Page 3 10 ProCore SR Series Clutch Disassembly Fig 11 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Remove PTO driveshaft from aerator see PTO Dri veshaft Removal in this section 3 Remove eight 8 cap screws item 17 nuts item 25 and springs item 15 that secure clutch assembly to driveshaft flange yoke 4 Remove clutch components from driveshaft using Figure 11 as a guide Clutch Assembly Fig 11 1 Assemble clutch components to driveshaft using Figure 11 as a guide 2 Secure clutch components with eight 8 cap screws item 17 springs item 15 and nuts item 25 Tighten nuts so that spring length is 1 125 28 6 mm Fig 13 3 Install PTO driveshaftto aerator see PTO Driveshaft Installation in this section IMPORTANT DO NOT overtighten nuts that tension clutch springs on PTO driveshaft Driveshaft clutch is designed to slip if drive system is over loaded If nuts are overtightened driveshaft or tractor trans mission damage may occur 4 After installation is complete check that clutch does not slip If clutch is slipping tighten nuts equally in 1 4 turn increments until clutch slippage ceases Figure 12 1 PTO pressure plate 3 PTO flange hub 2 PTO cl
114. used Cap screw 4 used Lock washer 4 used RH idler bracket ProCore SR Series Disassembly Fig 15 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Raise and support rear hood 3 Remove front screens see Covers Removal in the Service and Repairs section of Chapter 3 Chassis 4 Remove drive chains see Coring Head Drive Chain Disassembly in this section 5 Remove sprocket s from gearbox shaft A Measure distance from end of gearbox output shaft to location of sprocket hub for assembly pur poses Record measurement B Remove three 3 cap screws and lock washers that secure sprocket to sprocket hub IMPORTANT Excessive or unequal pressure on the cap screws can break the sprocket hub flange When removing sprocket from hub tight en screws progressively and evenly C Insert three 3 cap screws into threaded removal holes of the sprocket hub Tighten screws progres sively and evenly until the sprocket is loose on the hub Position sprocket away from hub D Remove set screw that secures sprocket hub to gearbox shaft E Remove hub sprocket and square key from gearbox shaft 6 If sprocket removal from coring crankshaft is neces sary remove coring crankshaft bearing housing that in cludes sprocket and remove sprocket from crank arm see Coring Crankshaft Bea
115. ushing 2 per connecting rod 14 Crank arm 4 Bearing 4 per connecting rod 10 Crank arm 15 Crank pin 5 Outer bushing 2 per connecting rod 11 Bearing 6 per connecting rod 16 Lock nut 6 Linkage arm IMPORTANT Before disassembling the coring crankshaft label location and orientation of compo nents that are to be removed Correct component location and orientation are necessary for proper aerator operation Coring Head SR75 Page 6 10 Removal Fig 9 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Unlatch open and support rear hood to allow access to coring crankshaft ProCore SR Series 3 Rotate coring crankshaft to allow access to crank pin item 15 and crank nut item 8 for connecting rod to be removed Remove cotter pin item 7 from crank nut IMPORTANT When loosening crank nut item 8 DO NOT use a pipe wrench or other adjustable wrench Damage to the crank nut item 8 and crank pin item 15 may occur if adjustable wrench is used 4 Insert block of wood between aerator frame and con necting rodto prevent the crankshaftfrom turning Using crank shaft nut wrench see Special Tools loosen but do not remove crank nut item 8 5 Support connecting rod that is to be removed to pre vent it from falling As crankshaft components are removed from machine
116. utch lining 4 Flange yoke 1 125 28 6 mm Figure 13 1 Cap screw 3 Nut 2 Spring 4 Flange yoke ProCore SR Series Page 3 11 Chassis PTO Driveshaft Cross and Bearing Service 1 Remove PTO driveshaft from aerator see PTO Dri veshaft Removal in this section 2 If necessary separate PTO driveshaft and remove shields IMPORTANT When placing yoke in vise clamp lightly on the solid part of the yoke to prevent yoke damage Also the use of a vise with soft jaws is rec ommended 3 Lightly clamp yoke in vise with soft jaws Remove snap rings that secure bearings in each yoke Remove yoke from vise IMPORTANT To prevent damage to driveshaft yokes support yokes when removing and installing bearings 4 Use a press to remove cross and bearings from yokes A Place a small socket against one bearing and a large socket against the yoke on the opposite side B While supporting the large socket apply pres sure on small socket to partially push the opposite bearing into the large socket C Remove yoke from press grasp partially re moved bearing and tap on yoke to completely re move the bearing D Repeat process for remaining bearings E Thoroughly clean and inspect all components 5 To install new cross and bearings A Apply a coating of grease to bearing bores of end yoke and shaft yoke Also apply grease to bearings and seal of bearing assembly Make sure that all bearing rollers are properly s
117. veshaft shield Cap screw 4 used Lock washer 4 used Flat washer 4 used Cap screw 3 used per hub Cap screw 3 used per sprocket ProCore SR Series Disassembly Fig 18 1 Position aerator on a firm level surface If aerator is attached to tractor disengage PTO apply tractor park ing brake stop engine and remove key from the ignition switch 2 Raise and support rear hood 3 Remove front screens see Covers Removal in the Service and Repairs section of Chapter 3 Chassis 4 Remove drive chains see Coring Head Drive Chain Disassembly in this section 5 Remove sprocket s from gearbox shaft A Measure distance from end of gearbox output shaft to location of sprocket hub for assembly pur poses Record measurement B Remove six 6 cap screws items 24 and 25 and lock washers item 14 that secure sprocket to sprocket hub IMPORTANT Excessive or unequal pressure on the cap screws can break the sprocket hub flange When removing sprocket from hub tight en screws progressively and evenly C Insert three 3 cap screws into threaded removal holes of the sprocket hub Tighten screws progres sively and evenly until the sprocket is loose on the hub Position sprocket away from hub D Remove set screw that secures sprocket hub to gearbox shaft E Remove hub sprocket and square key from gearbox shaft 6 If sprocket removal from coring crankshaft is neces sary remove coring cra
118. w times until a consistent resistance is determined C If rotating resistance is below 2 in lb 0 23 N m add additional shim s behind the retaining ring item 10 If resistance is above 3 in Ib 0 34 N m re move shim s from behind the retaining ring D Retest rotating resistance after adding or remov ing shims E Continue shim placement until input shaft rotat ing resistance is consistently from 2 to 3 in Ibs 0 23 to 0 34 N m Gearbox Service x ve Q ja So 4 Install output shaft assembly into gearbox housing A Press ball bearing item 8 onto output shaft Make sure that bearing is pressed fully to shaft shoul der B Position bevel gear item 11 and tapered bearing cone item 5 inside gearbox housing Make sure that bevel gear teeth mesh properly with gear on in put shaft Slide output shaft through ball bearing opening of housing bevel gear tapered bearing cone and then tapered bearing opening of housing C Insert tapered bearing cup item 5 into bearing bore of gearbox housing D Install the removed shim s item 3 and retaining ring item 2 into gearbox tapered bearing bore Make sure that retaining ring is fully seated in hous ing groove E Installthe removed shim s item 3 and retaining ring item 2 into gearbox ball bearing bore Make sure that retaining ring is fully seated in housing groove 5 Check that there is no end play in the output shaft and that output
119. x is incorrectly assembled or installed e g output shaft installed into gearbox in reverse direction or gearbox placed on frame up side down there is a possibility that gearbox out put shaft rotation will be incorrect for proper aerator operation After placing the gearbox on the frame make sure that rotation of the input shaft results in the correct output shaft rotation direction Figure 19 shows correct shaft rotation direction for the SR54 and SR54S Figure 20 shows correct shaft rotation direction for the SR70 and SR70S If rotation is in correct check gearbox assembly and installation before proceeding with installation procedure A CAUTION To prevent personal injury make sure that gear boxis supported as it is installed to the machine See Specifications in this chapter for gearbox weight 1 Position gearbox to aerator frame Secure gearbox to frame with four 4 cap screws and lock washers Coring Head SR54 amp SR70 Page 4 24 2 On SR70 aerators secure gearbox flanges to aera tor frame brackets with bolts and lock nuts Fig 18 3 Install sprocket and sprocket hub to both gearbox output shafts see Coring Head Drive Sprockets Assem bly in this section 4 Install both drive chains see Coring Head Drive Chain Assembly in this section Make sure that drive chain is properly adjusted after assembly 5 Position driveshaft shield item 19 to gearbox and secure with four 4 cap screws lock was
120. y infor mation refer to the Service and Repairs section of Chapter 7 Gearbox Service Gearbox Installation Fig 20 IMPORTANT If a gearbox is incorrectly assembled or installed e g output shaft installed into gearbox in reverse direction or gearbox placed on frame up side down there is a possibility that gearbox out put shaft rotation will be incorrect for proper aerator operation After placing the gearbox on the frame make sure that rotation of the input shaft results in the correct output shaft rotation direction Figure 21 shows correct shaft rotation direction for the gear box shafts If rotation is incorrect check gearbox assembly and installation before proceeding with installation procedure To prevent personal injury make sure that gear box is supported as it is installed to the machine Refer to Specifications in this chapter for approximate gearbox weight 1 Position gearbox to aerator frame Secure gearbox to frame with four 4 cap screws and lock washers ProCore SR Series Page 5 23 2 Install and tighten ten 10 saddle bolts item 10 and lock nuts item 13 to frame and gearbox flanges 3 Install sprocket and sprocket hub to both gearbox output shafts see Coring Head Drive Sprockets Assem bly in this section 4 Install both drive chains see Coring Head Drive Chain Assembly in this section Make sure that drive chains are properly adjusted after assembly 5 Position driveshaft s

Download Pdf Manuals

Related Search

Related Contents

A-PDF PageMaster Demo. Purchase from www.A-PDF  SICStus Prolog User's Manual  Service Manual - Appliance Factory Parts  846 JOURNAL OFFICIEL DU 3 OCTOBRE 1969 M Article 56-  BEDS User Manual  取扱説明書ダウンロード  [B40] RWS-TE2PAFZ39-IR(Videor)  ISU`s Classification and Hiring System PeopleAdmin 7 User Manual  BIKE EXERCISER  Manuel d'instruction  

Copyright © All rights reserved. Failed to retrieve file