PRELIMINARY ) PASQUALI SERVICE MANUAL
Contents
1. Qo Tm r i 4 2 OY QD C D were C Z O O m O uw C N za OO X UO 4 C vr O 4 D WHY lt D Oo I LI ee C TC CC Oo en CO oO xu dod cM co E WY 0 23 ws Q CD O OM O m q fi CC 00 i Da a QD O O 4 i s um ad 47 Q m e _ ee C D 2232 MD LL C oU Z M CN the 6 8 x 20mm bolts and ing us er tight only 1ng lockwashers f face 5 Inspect flywheel friction an 11 4 Fig PAGE 8 Y js s M Note After the fingers are Align the splined hub of the adjusted lock the adjusting feiction dise 54 FIGs 157 to the Screw by staking the lock pilot bearing 6 Fig 15 and ring on the nut into the torque the 6 8 x 20mm bolts 4SEFEW SLOT Fig 13 and 15 17 ft lbs apply a thread locking compound Fig 16 Re dssemble the engine bell Using the set gauge adjust the housing assembly back onto the height of the 3 three clutch transmission face in reverse fingers to 20mm Fig 14 order of disassembly e a ee er EE pee ner Serer yy es ty tt p ea H m ami 05 Cee d A PAGE 9 FRONT STUB AXLE DISASSEMBLY Removing the front stub axle assembly provides dccess to the inner and outer bearings the outer oil seal and the final drive reduction hub D ge Drain the front gear case or tip the axle up in such a manner so th2. 5 FIG ght gained by s hole S pin 43 19 Cl Now right axle housing is clear for removal The left ee Fi S in gure 5 s cleared for removal g Ls ing rock axle hous by rotat Clo FIG shaft hex bolts to differential 6 and remove axle im 1ng Remove 6 10 x 30 hold g axle housi 1n ig F 4 ing 2 1ng hous Eos g 1n nous PAGE 20 REAR AXLE DISASSEMBLY Attach slide hammer to wheel studs on axle flange l Fig 10 Disassembly of axle gives access to inner and outer bearings outer oil seal and reduction gears Unclip spring on brake lever to reduce tension 2 Fig 10 Remove 6 x 18 mm screw holding brake drum and remove brake drum MEM CL Fige 8 Brake lever will slide off brake rock shaft 3 Fig 10 and ear on axle housing 4 Fig 10 as the axle and brake plate are removed xs Remove 6 10 x 25 mm hex bolts through access hole in axle flange cU Figs 9J PAGE 2 Refer to disassembly of front axle BRAKE INSPECTION AND REPAIR when removing reduction gears bearings and seal as these parts are identical in front and rear gxles 4566 Figure ET Support rear section of tractor with jack Remove 8 mm bolt fastening brake peddl to adjustment bar CL Fag 12 FI Tl Re dssembly is in reverse order Remove wheel and brake drum as T
3. if machine has a governor it may need adjustment d Low oil s pply Check reservoir and add oil if necessary Check system for leaks that could cause loss of oll e Adjustable orifice restricted too much ED Back out orifice and adjust it Check machine specifications for proper setting f Air in svstem Check suction side of the system for leaks g Badly worn pump Repair or replace pump Check for problems causing pum wear such as misalignment or contaminated oil h Restriction in suction line or filter Suction line could be dirty or have inner walls that are collapsing to cut off oil supply Clean or replace suction line Examine filter for plugging i Relief valves not properly set or leaking est relief valves to make Sure they are opening at their rated pressure Examine valves for damaged sedts that could leak j Badly worn components Examine and test valves motors cylinders etc for external and internal leaks f wear is abnormal try to Jocate the cause k Valve or regulators plugged Clean dirt from components Clean orifices Check source of dirt and COFPOCT 1 Oil leak in pressure lines Tighten fittings or replace defective lines Examine mating surfaces on couplers for irregularities PAGE 58 T j Heat not radiating properly 4 Overheating of Oil in System 9 Properly d Operator holds control valves in power position too lonc c
4. Grind the rear face of the flange completes the re installation of flush to remove all weld the front axle sub assembly FRONT AXLE REMOVAL AND RE INSTALLATION Removal of the left front axle provides access to the front ring gedar dnd ditterentiaqk carrier 12 v also must be removed so the differentidl lock linkage may be disconnected allowing the right front axle to be removed Remove the front wheel wheels Disconnect the forward power steering attach bracket from the axle housing by removing the 4 10 5 30 mp bolts ly Figs D 2 EIS sl Drain the gear box lubricant from the front case PAGE 12 Remove the 6 10 x 30 mm bolts attaching the axle casting to the transmission case 1 Fig 2 A 5 a Ed Crore it O Remove the left front axle sub assembly from the front case See Fig 3 a DECEM PAGE 13 Reach in and remove the ring gear dnd differential carrier assembly da Fige 299 If it is necessary to remove the right hand front axle assembly disconnect the front differential shift linkage by removing the COLTER pins ls Fige 4 You may then disconnect the right hand power steering attach bracket and remove the 6 10 x 50 mm fasteners securing the axle housing to the transmission case Note 2 Fig 4 is the sliding collar that locks out the front differential 3 Fig 4 is the splasher gear that rolls lubricant up onto th
5. b Broken valve parts iU valve is cracked look for lt q cause like too much pressure or hoses that are attached incorrectly ll Cylinders Leak 0il d Damaged cylinder barrel Replace cylinder barrel Correct cause of barrel damage Rod seal leaking Replace seal f contamination has caused sedl to wear look for source 7 EE Wear may be caused by external as well as internal contamin ants Check piston rod for scratches Or misalignment c Loose parts Tighten parts until leakage has stopped d Piston rod damaged Check rod for nicks or scrdtches that could cause sed damage or allow oil leakage Replace defective rods REMOVE amp REPLACE HYDRAULIC PUMP AND FILTER Note This procedure is applicable for all pumps driven directly off the engine crankshaft It cannot be used for model 988 gt Figure 1 shows a typical pump installation on Ruggerini powered tractors This same mount and drive set up is used on the single cylinder Lombardini powered tractors also The major elements of the system dre identified Tor your convenience Clie EIg L Reservolr 2 Figs IX Filter Cap a Fide J Suc Lon Ere 4 Fig 1 Pump Assembly 5 Fig 1 Pressure Line The hydraulic filter is a permanent Steel mesh filter 1 Fig 2 that is installed directly in the suction line sump located in the lower end of the reservoir It can be removed cleaned and re in
6. be removed and replaced PAGE 38 f the range actuator rod must be Note File the peened head of the removed from the pinion shaft pin flush with the bottom 5 Fig 6 drive the plug from of the slot in the shifting the aft end of the shaft using a collar after it is securely small punch or rod inserted into fastened the rear slot in the pinion shaft l Fig 6 to tap it out The plug 1 Fig 10 can be re inserted into the hole in the aft end of the pinion shaft Care should be taken not to damage the 0 ring used to seal transmission lubricant from leaking from the hollow shaft After replacing all damaged parts the pinion shaft sub assembly can be re assembled in reverse order of disassembly The small end of the stepped pin 2 Fig 10 securing the shifting collar to the range actuator rod must be peened down into the couhtersink in the EPUM collar os Secure its PAGE 39 RE ASSEMBLY OF THE TRANSMISSION CASE rn re ee ee This procedure assumes that all gears and shafts have been removed from the transmission case and that the bearings and seals have been inspected and or replaced Note All bearings and seals should be pre lubricated with a light grease prior to re assembly J9 aid in orientation Figure 1 identifies the 5 shafts that will be re assembled into the case 5 Fio 17 PINION snot ts vs 4s i
7. confirmed housing provides access to Dy visually inspect and check a Both rear axle sub assemblies 1 Removing the left front axle b The rear differential assembly from the transmis sion case This provides er l FA direct access to visually c fhe rear ring and pini gedr inspect De F d PTO final drive gears a Both front axle sub assemblies b The front differential carri r c The front ring and pinion gear d The front differential lock e You may also probe the aft section of the transmission case with qa magnet to pick up debris associated with a gear box problem ASeB Jod TO 39 62 PAGE 30 DISASSEMBLY OF THE TRACTOR IN THE Prior to separating the tractor MIDDLE you must disconnect or remove l I dydraulTe ines to rear JT Disassembling the tractor in the dnd power steering manifold middle provides access to block at control valve 1 Ground drive amp PTO drive 74 Flos 1 through the central steering 2 Clutch cable under deck plate Fide 2 section 2 Front transmission 3 Input shafts to rear differential 4 Final PTO drive 5 Oscillating and articulation mechanism The tractor will be separated at the aft end of the front transmission and the forward end of the steering weldment 1 Fig 1 5 Electrical junction block under seat 4 Hydraulic steering cylinders xgt the axle housing by removing 4 10 x 30mm bol
8. ground drive shaft can be aligned and mated to its matching shaft approx 1 2 only on the forward section of the tractor Slide the ground and PTO drive shafts onto their respective splined shafts on the aft section of the tractor Figs 10 Move the aft section forward and rest the central steering weldment on the shelf casting 1 Fia 10 NOTE With the wheels off the ground rotate the aft drive shaft to align the roll pin Holes 2 10 IU Align the roll pin holes in the lower PTO drive shaft and mate it to the matching shaft on the i forward section of the tractor E Continue to roll the aft section B Toe forward until the shafts are fully mated Reinstall the roll pins in both shafts NOTE Adjust the jack under the front of the tractor so that the steering weldment is Complete assembly in reverse order dligned and sets flat on the of disassembly shelf cdsting tls Fio 10 PAGE 34 DISASSEMBLY OF THE TRANSMISSION CASE Will provide access to the primary gear case SENS a Access to the inside of the gear case is accomplished by removind the rear cover 1 Prior to removing the rear Remove 6 10 mm bolts and 2 cover drain the transmission l0 mm shoulder screws holding the lubricant rear cover to the main case You mdy install 2 10 mm studs 2 1 2 to 5 long to support the 1 Fig 1 and remove 1 Fig 3 ES ES drive shafts E 3 Remov
9. in neutral If you are not using the PTO the 1 3 8 6 splined stub shaft should be removed and stored ir the toolbox under the front hood Place the protective rubber boot over the PTO shaft socket to eliminate contamina tion from entering into the splined receiver Fill fuel tank with Z2 diesel fuel before starting the engine Note The Pasquali tractor line is powered by air cooled diesel engines Under NO circum stances should you use gasoline or any mixture of gasoline and diesel fuel t is imperative that ONLY 2 diesel fuel be used in these engines While Operating ki 8 Start and operate the tractor only while sitting in the seat Before starting the engine d Assure drive transmission levers are in neutral b Assure PTO shift lever is in neutral ventilation kT c Set the parking brake d Depress the clutch fully to activate the safety start Switch After starting the engine release the clutch slowly to confirm the transmission levers are in factis In neutral Do not run the engine in a closed area without adequate The exhaust fumes can cause great discomfort and might prove to be hazardous The tractors are designed to be operated by a single person Under no circumstances should they carry passengers Operating these tractors safely requires constant attention to minimize risks and maintain control the operator should q Operate the equipment only in dayli
10. leaks 6 Pump Makes Noise g2 Low oil level ssrrpbqxeservolts Check system for leaks b Oil viscosity too high Change to lighter oil C Suction line plugged or pinched Clean or replace line between reservoir and pump d Sludge and dirt in pump Disassemble and inspect pump and lines i Clean hydraulic system Determine cause of dirt PAGE 59 e Reservoir air vent plugged Remove breather cap flush and clean air vent f Air in oil Tighten or replace suction line Check system for leaks Replace pump shaft seal g Worn or scored pump bearings or shafts Replace worn partis OF tape ei pump if parts are badly worn or scored Determine cause of scoring h Broken or damaged pump parts Repair pump Look for cause of damage like contamindtion or too much pressure Sticking or binding parts Repdir binding parts Clean parts and change oil if necessary Pump Leaks Oil d Damaged seal around drive shaft Tighten packing or replace seal Trouble may be caused by contaminated oil Check oil for abrasives and clean entire hydraulic system Try to locate source of contamination Check the pump drive shaft Mis alignment could cause the seal to wear If shaft is not aligned check the pump for other damage Sie b Loose or broken pump parts Make sure all bolts and fittings dre tight Check gaskets Examine pump castings
11. of standard 3 point hitch mounted implements The installed accessories can be taken on and off in a reasonable amount of time to make maximum utilization of this equipment PAGE 3 SAFETY INSTRUCTIONS The Pasquali line of tractors has been designed and tested with this god in mind to reduce or mini mize the potential for accidents However with careless or improper operation coupled with inadequate maintenance the possibility for personal injury to the operator increases The following listed safety instructions are meant to remind the operator of some of the more obvious hazards associated with operating mechanical equip ment coupled with some less obvious operating characteristics associated with articulated tractors Please read them carefully before operating our equipment Before Operating 1 Read and understand that portion of this manual that covers the operation of tnis vehicle Be familiar with all of the controls and Know how to stop quickly 2 Keep all safety shields in place and confirm that all safety devices are operable 3 Wear long pants and substantial shoes If you are working in heavy brush or in orchards with low hanging limbs safety glasses and d helmet are advisable Be sure that the safety start switch is adjusted so that the tractor can only be started when the clutch pedal is fully depressed disengaging the drive clutch Verify that the PTO speed selection lever is
12. ranges to give 9 forward speeds ranging from 4 mph to 15 mph and 5 reverse speeds ranging from 9 mph to 10 mph HYDRAULIC SYSTEM Equipped with direct drive gear pump available in a range of displacements from 5 1 to 5 4 gpm System standard with built in filter pressure relief adjustable 1500 to 2000 psi BRAKES Mechanical brakes on rear wheels with standard locking hand brake HEECH Standard 3 point hitch compatible with category I implements Fixed drawbar Optional hydraulics to operate remote hydraulics on implements PTO 2 speed PTO 540 and 760 RPM Standard options available to provide PTO speeds in excess of 2000 RPM s upon request PAGE 2 SAFETY FEATURES Low center of gravity combined with wide stance to assure maximum Stability on steep grades Safety start switch standard to assure tractor cannot be started while drive train is engaged Roll over protection ROPS available COMPATIBLE IMPLEMENTS amp ACCESSORIES l Mowing Equipment d 4 amp 5 single spindle rotary brush mowers ME b 4 5 amp 6 flail mowers C b6 cycle bar mowers d Triple blade rotary mowers H and 5 2 5 4 amp 5 Rotary Tillers 5 4 5 amp 6 Two Stage Snowblowers 4 Installed Implements d Front mount loader b Bull dozer blade c Rear mount backhoe d Rear mount trencher e Rear mount vibrating plow Tractor can be set up and equipped With d wide range
13. relief valves and check for broken springs etc m Pump rotating in wrong direction Reverse to prevent damage n Operating system under excessive load Check specifications of unit for load limits o Hoses attached improperly Attach properly and tighten securely p Slipping or broken pump drive Replace couplers or belts if necessary Align them and adjust tension q Pump not operating Check for shut off device on pump or pump drive 2 System Operates Erratically q Air in system Examine suction side of system for leaks Make sure oil level is correct n 0il leak on the pressure side of the system could dccount for loss of oil by Cold O11 Viscosity of oil may be too high at start of warm up period Allow oil to warm up to operating temperature before using hydraulic functions PAGE 57 c Pump damaged Check for broken or worn parts Determine cause of pump damage d Dirt in relief valves Clean relief valves e Restriction in filter or suction line Suction line could be dirty or have inner walls that are collapsing to cut off oil supply Clean or replace suction line Also check filter line for restrictions 3 System Operates Slowly d Cold oll Allow oil to warm up before operating machine Db Oil viscosity too heavy Use oil recommended by the manufacturer C Insufficient engine speed Refer to operator s manual for recommended speed
14. the new stud throug After removing the discrepant seal the back face of the flange Be clean the counter bore carefully sure the head of the new stud is Use d good grade of gasket sealer flush with the back face of the Permatex to seal the OD of the axle flange You may use a wheel seal to the bearing and seal nut and some washers to pull the retainer cup Use caution not to new stud through the flange and get the gasket sealer onto the lip hold it securely against the back Mb a MNA HR face as you weld it ced imo the cup oa Polish the OD of the stub dle Tack weld the head of the new stud the seal is in contact with to th back face of the flange Use 400 grit emery or finer securely E mt Scratch or gouge this sealing surface Assemble the front stub axle sub assembly back into the axle casting Be sure to position a new gasket between the inboard face of the bearing and seal retainer cup and the outboard end of the d Reassemble the front stub axle sub assembly in reverse order of disassembly en Replace wheel studs _ Broken or stripped wheel studs can yr alia oh E T e se the slide hammer to properly ae the tra tor m ESSE sedat the outboard bearing into the oe OF Evie OE at axle housing Uo the axle flange on the inboard side and press or drive the damaged stud through the axle ro dg URS yi nM Install the 6 IO x 25 mm bolts G ME A and torque to 32 36 ft lbs This
15. 7 TS PTO idler gear or the pinion shaft pinned to the aft end of the range Octadtor rodi 55 119 6 rocateo Tn Figure 5 illustrates the major the center of the pinion shaft parts of this sub assembly The range drive key 2 Fig 6 is then aligned with the appropriate range drive gear selected by the operator Figure 6 illustrates the major parts of the range shifting 1 Fig 5 Low range gear 2 Fig 5 Medium range gear mechanism 3 Fig 5 High range gear 2 Fig 6 Range drive key 4 Fig 5 PTO idler gear 3 Fig 6 Range actuator rod 5 Fig 5 Range shifting collar Fig 6 Shifting collar 6 Fig 5 Front pinion shaft 5 Fig 6 Stepped pin oe PAGE S7 DISASSEMBLY RANGE DRIVE KEY Note If the range drive key has broken it can be replaced by removing the snap ring 1 Fig 7 and thrust washer 23 1G 7 399 that the PIO jdler gear lt 3 Figs 7 and range gears can be slid aft dodinSt tne osmrt xol bts This will provide access to z remove and replace the range drive kev IT IS NOT NECESSARY TO REMOVE THE The range shifting collar can be SHIFTING COLLAR removed by punching or drilling out the peened over end of the stepped pin that secures the shifting collar to the range actuator rod Clg Fig COMPLETE DISASSEMBLY After removing the snap ring Remove and replace PTO idler gear 1 Fig 9 the damaged parts can or any range gears
16. AGE 55 9 allots at Szopur A3 buraoeQqSs XoMOd b5ur42y e bPurs Teng I 1070W buTz9045 Hutzoesay peoq uoN 1e3ue uedo 9NIN33IS YSMOd TVNOILdO HLIM WILSAS DITAVEGAH QuVONVIS I VhOSVd AOUTeAS ASAT dung ai9e9 3ueuooe dSTQ 9AT3TSOd SOTTO erzansseig AxzeuUTAd SATRA AITT ASQVUSD wepuey xoepurlAo JTI bur32 eTbuts PAGE 56 e Restriction in system 0il lines could be dirty or have inner walls that are collapsing to cut off oil supply Clean or replace lines Clean orifices f Air leaks in pump suction line Repdir or replace lines g Dirt in pump Clean and repair pump _ If necessary drain and flush hydraulic system Try to find source of contam ination h Badly worn pump Repair or replace pump Check for problems causing pump wear such as misalignment or contaminated oil i Badly worn components Examine and test valves Motors cylinders etc for external and internal leaks If wear is abnormal try to locate the cause J Oil leak in pressure lines Tighten fittings or replace defective lines Examine mating surfaces on couplers for irregularities k Components not properly adjusted Refer to machine technical manual for proper adjustment Of components l Relief valve defective Test relief valvesito make sure they are opening at their rated pressure Examine seals for damage that could cause leaks Clean
17. Finish Mowing Roto Tilling snowblowing Trenching Front End Loading Backhoeing E Vibratory Plowing Cable Laying Backfilling Pulling or Towing General Agricultural Applications MODELS Delivered in ready to run condition operated only as required Tor manufacturers qualification tests ENGINES 1 and 2 cylinder 4 stroke dir cooled diesel ranging from A4 cu inches to 82 cu inches of displacement Machine equipped with running time meter ELECTRICAL Twelve volt system with electric Start 96 amp hour battery Charging system alternator with electronic voltage regulator TERES Wide range of options 31 x 15 5 x 15 cleated tires for flotation with maximum traction 51 x 15 5 x 15 turf tires for flotation on soft mowed terrain 9 5 Xx 16 Power Torque cleated tires for agricultural applica tions 7 5 X 16 tires for variable widths while providing excep tional traction STEERING Hydraulically actuated articulated Steering for short radius turns and maneuverability around shrubs tree or other obstacles Tractor has oscillating capability to assure stability and traction on uneven or rutted terrain FOUR WHEEL DRIVE Drive system is eduipped with full differentials front and rear with ability to lock out differential on the front axle for maximum traction FINAL DRIVE 3 speeds forward 1 reverse used in conjunction with 3
18. IE wo a T Ta TT 7H 7T p pe ce id i 2 Ring gear Remove the planetary gears 1 Fig 2 from the ring gear Za Fl9 2 and Carrier oy Fig pull the retaining pin 2 Fig 2 from the face of the carrier tap Remove the 8 bolts securing the out the cross pin 4 Fig 2 and A a aa un differential carrier to the ring remove the 2 satellite gears gear 6 Fig 2 4 PAGE 16 Inspect all components of the ring Tap the locking tabs securely around gear and differential carrier the bolt heads locking them in sub assemblies for defective parts Place Figure 3 and replace as required The rina gear and carrier assembly is now ready for re installation Assembly Re assemble the planetary gears l Fig 2 into the differential Carrier 55 P182 Gnd The ring eare y FAG 2 Position the satellite gears 65 FIGs 2 TAO The Carrier dic Slide the cross pin 4 Fig 2 through them and secure with the retaining pin 2 Fig 2 Seat the carrier assembly into the ring gear position the locking plates and re install the 8 10 x 30 mm bolts tightening to 32 36 ft 1bs of torque I6 PAGE 17 REAR AXLE REMOVAL Removal of the rear axle assemblies provides access to the differential gear group and the PTO final drive gears The differential can only be removed from the right side Remove 3 point hitch arms if equipped support rear sec
19. PRELIMINARY PASQUALI SERVICE MANUAL This is a partial release of our Pasquali Service Manual It includes thos sections which have caused our dealers some difficulty in accomplishing efficient repdirs We will appreciate your comments and suggestions on Improving this manual Feel free to contact Dave Coons concerning questions or suggestions INDEX PAGES General Specifications 1 2 Safety Instructions ee Remove and Replace Clutch 5 7 Front Stub Axle Disassembly 9 10 Replace Outer Axle Oil Seal I Replace Wheel Studs I Front Axle Removal and Re installation 12 14 Disassembly amp Re assembly of Front amp Rear Differential 15 16 Rear Axle Removal Iz 7 19 Rear Axle Disassembly 20 0 Brake Inspection amp Repair 2 22 Brake Adjustment 25 Trouble Shooting Drive Train Problems gH eae 2 Typical Drive Train Problems amp Causes 96 Isolating Problem 27 29 Disassembly of the Tractor in the Middle 50 32 Re dssembly of Tractor Halves 55 Disassembly of the Transmission Case 34 5 Disassembly of the Range Gears from Pinion Shaft 36 Disassembly of Range Drive Key 57 38 Re assembly of Transmission Case 39 43 PAGE SPECIFICATIONS FOR PASQUALI RUBBER TIRED 4 WHEEL DRIVE AIR COOLED DIESEL POWERED ARTICULATED UTILITY TRACTOR The specifications listed below are for a Pasquali 4 wheel drive articulated diesel tractor adapt able to d wide range of applications including but not limited to Rough amp
20. ail from repeated heavy Note If the gooseneck cannot be shocking This polymer bushing removed easily you may has good wear resistant character remove the 4 14 mm self istics plus it can distribute locking nuts 4 Fig 7 that and absorb the concentrated shock secure the barrel casting to loading more effectively than a the rear case cover Then ball bearing ea the barrel casting can be SUE MM l ae E pressed or driven from the BR o S gooseneck support section The upper and lower ball bearings can be tapped out of the gooseneck support section using a mild steel Dara SPI 39 PAGE 47 Inspect dnd replace all discrepant DISASSEMBLY amp RE ASSEMBLY OF BARREL parts When re installing the sts LING support bearings for both tne groun The upper ground drive shaft dnd PTO drive shafts take care to 1l Fig 10 can be tapped out by have the shielded side of these removing the snap ring 2 Fig 10 bearings facing forward that secures the bearing into the la TIS counterbore of the casting The support bearing for the ground drive shaft should be pre assembiec onto the shaft and secured with the snap ring The assembly may then be inserted into the casting from the forward end of the barrel COST ID The ball bearing that supports the lower PTO drive shaft can be tapped Note Use a soft brass or mild stee or pressed out of the barrel casting rod to sedt the outer race of from th
21. at the oil in the Case will not flow over the bottom lip of the axle housing After removing the wheel and working through the access slot in the face of the stub axle flange remove 6 10 x 25 mm bolts that secure the bearing retaining cup to the face OF She axles Fros 3 9 ree e Attach a slide hammer to the axle flange using ds many studs ds practical prererabIy dll Tour ly Flas 2 z P n aa e AMPARO VA Remove the stub axle assembly from a tie axle casting If all of the wheel studs are broken off you may tempor arily weld some 5 8 diameter DOLTS CO tne Tdce Dr tne axle flange to attach the slide hammer to After the axle is removed knock off these bolts and grind the face flush i t Figure 3 identifies the key parts of the front stub axle sub assembly 5 Fig 3 Bearing and seal PAGE 10 The inboard splined end of the stub axle can be pressed out of the reduction hub Fig 4 After removing the snap ring and wdsher the outboard bearing can be removed using any commercidl gedr puller 1 Fig 5 or vour press 1 Fig 3 Final drive reduction hub 25 Figs 3 Inher Dearing 55 Fios 5 StUD XP he 5 Figs 3 Qgter Dearing retainer cup The bearing and seal retainer cup 1 Fig 6 can then be removed to remove and replace the outer oil seal 2 Fig 6 PAGE 1 REP KUCE DUIME Dii SEL Press or drive
22. ausing relief valve to open Return control lever to neutral position when not jn use D USING Incorrect o Use oil recommended by manufacturer Be sure oil viscosity is o fawear is abnormal try to LOCIE cause g Restriction in pump suction line e Cledn Or repldce hy Dented obstructed or undersized oil lines Replace defective or undersized oil lines s Remove obstructions Control valve stuck in partially or full open position Free dll spools so that they return to neutral position ou d Clean dirt and mud from reservoir oil lines coolers and other components Foaming of Oil in System Low oil level Fill reservoir Look for leaks b Water in oil oF Drain and replace oil e c Wrong Kind of oil beina used D pel Use oil recommended by manufac Fill reservoir i oc or dedic Gy ALY ledk in Line Trom reservoir d Dirty oil CO RUMP s exem end aea eri ante sa Tighten or replace suction line oil e Kink or dent in oil lines _ Look for source of contamin restricts ojl flow ation Replace oil lines e Incorrect relief valve pressure f Worn seal around pump shaft Check pressure and clean or Clean sealing area and replace replace relief valves sedl ff Internal component oil leakage Check oil for contamination or Examine and test valves pump for misalignment cylinders motors etc for tasexternal and internal
23. bly Remove the 2nd No 3 snap ring from the locking groove and tap the shaft through the No 6 spur drive gear and No 9 support bushing Inspect all parts carefully replace those that are defective and re assemble parts in reverse order of disassembly Fear of the Case from the rear into the case using a soft brass bare Fig 9 identifies parts associated with the SAE 1 378 6 spline PTO shaft Cla deg 9r GAEPTOCSHOTE 2 Fig 9 Retaining Clip 5 Fig 99 S0gp Ring 4 Fig 9 Rear Bearing 5 Fig 9 0il Seal 6 Fig 9 Front Bearing 7 Fig 9 Shaft amp Gear Assembly to Plo 9 07 Rind 95 Fig 9 Plug The spur gear and shaft assembly 6 Fig 9 can be removed by unclipping the snap ring 3 Fig 9 from the shaft extending out the Tap the shaft Inspect bearings and the seal carefully and replace discrepant parts Re assembly the spur gear and shaft assembly along with the seals and bearings into the case in reverse order of disassembly PAGE 53 GENERAL INFORMATION PASQUALI HYDRAULIC SYSTEM The Pasquali tractor comes equipped with a standard open center hydraulic system that operates the rear lift and the optional power steering system In tractors other than model 988 the hydraulic gear type pump is driven directly off the engine crankshaft using a positive no slip splined coupling hydraulic pumps have an identifying part number steel sta
24. cure the aft strap of the deck plate 1 Fig 2 and 6 10 x 25 mm bolts that secure the leading edge of the deck plate 2 Figs 2 to the barrel casting tee 28a doeet i PAGE 45 Remove the deck plate and pedal Note Use caution not to damage assembly from the tractor threads 2 Fig 4 Retain the 2 tension wear plates for re assembly S Prg d Remove the forward portion of the central steering section 25 Fig 5 from the central support weldment Reet ee Oe SS DOES SEGA AS Remove the rubber protective cup 1 Fig 5 pull out the cotter pin dnd remove the large castellated E nut and thrust washer Tap the articulating king pin down from 06 D H the top i SS met bi ARONA To clarify identification of components associated with the articulating hinge pin see Fig 6 g 6 Casteliated Nut gd 6 Thrust Washer 1g 6 Spacer Tube g g g New New 6 Ball Bearing bY 0 RINGS 6 Gooseneck Central Support Weidment 8 Fig 6 Articulating Hinge Pin Ne N CO Ul L XN N Ne Ne SEL Ip ts Mh le T _ The gooseneck 2 Fig 7 support section can now be removed from the Darrel COSTING X5 Fide 7 2 Fig 9 shows the standard ball bearing that is normally installed top and bottom on the articulating King pin 5 Fig 9 is a poly pemco substitute that can replace the lower bearing that may f
25. d in it which changes distance between pedal and actuating mechanism This adjustment is responsible for pedal travel to brake engagement Refer to Figure 12 Old Wd 097 9 OS JD99 as4aroy 4099 pit 1D39 puooes JD99 4S4T4 Z 9I F go i 914 78I4 O TOT 986 E a ms uotutd M a f SUUS N O TOE 986 lO TOT 986 uorutd 4 j wotutg N gt lt 0 911 9t6 N xotpr 0 0tl S9rb6 3ndano OLd 0 21 9 6 3geus uorutd 1 0 ao 9r6 Q 9tt 9v t 9 6 s O TTT 9P6 O TTT S96 2G jm OSIOAOM O OI 9p6 i 30durt R ae POT 9P6 3ndurI EE or pes F andur Honea a o Lo1 9pcd 0 801 956 Niue Ug 3 3S O bOT 9bE anduz amod O A e uer ecu 0 801 9b6 NL id e andur is Od IN EET ONDE puz s ast ia PAGE 2 S4012D4 peib n2lijy I DhbsDd ID UI UiDd JaMog JO OI1D lguos T SIS wAVHS L dl O TO acy OE ese oars C ASIMMDOTIOYALNNOD CF au LL d Old Nvadouna n yn l EN I AS IMNDOTS OLd 3NITdS 9 HONI 8 1 TH ea LJVHS YAI0I o rr M ll HAL Ire LJVHS NOINId LJVHS RRE O T ora Se Paes lt LIVAS NV3D ANZ IST HU E LIVHS LOTId VHS JNOISSIWNSNWHIL Oo PAGE 25 TROUBLE SHOOTING DRIVE TRAIN PROBLEMS General After recognizing a Problem in the drive train it is important to trouble shoot it Systematically to reduce unnecessary tear down and aid in efficient repair The
26. ded support pins l Fig 12 to guide the cover during installation Place the cover onto the 2 support CAUTION Tighten cover bolts so as pins and move it forward until you to maintain a uniform gap can engage tne shifting dogs into between the cover and the the PIC skider Gear ls Fig 13 case An uneven gap may and into the range shifting collar cause binding which can result in excessive force which can break the cover flange After the cover is securely seated on the case torque all 10 mm bolts 32 to 36 ft l1bs Ts l3 Continue to close the cover tapping on the face of the cover near and around the pinion shaft As the cover draws up re install the 2 shoulder screws in the upper left hand corner and in the lower right hand corner Remove the 2 support pins and re install atl or tnde I0 mms DOLLS DISASSEMBLY OF THE CENTRAL STEERING SECTION Will provide access to repair or replace parts in 1 The articulating hinge king Tum eg 1 2 The barrel casting upon which the front half of the tractor OSCILdbes 24 Frige P 5 The aft gear cdse through the front cover Remove the 8 mm locking nut and thread out the 8 x 22 mm bolt that secures the brake pedal to the pedal adjustment bar Zoe Tob 199 p SENS S ENO a TNS SN lt a R ANARAN SEEN ew ae e cS a Flos o os on n M d SS Ah Remove 4 8 X 35 mm bolts that se
27. disassembly uy a m
28. ds 1 sto Zhao gedar Snai Te 5 Fig 1 Reverse shaft The first shaft to be re assembled into the case is shaft 4 the lst amp 2nd gear shaft Fig 2 1 Fig 1 Power transmission snaft 2 Fig 1 Idler shaft Care must be taken to re install tt thrust washer l Fig 2 on the forward end of the shaft and instal the 26 tooth first gear 2 Fig 2 so that the beveled teeth are facir Git Place the thrust washer 3 Fig 2 on the forward end of the reverse snart 4 Fig 2 dnd Install It into the COSE Position the large spur gear with the oil shield facing aft so that it is balanced on and meshed with the pilot shaft located on the front wall of the transmission case Position the spacer bushing l Fig 3 between the spur gear and the 2nd support bearing 2 Fig 3 and install the power transmission snaft into the case Install the transmission shift detent rod with fork carrier attached 1 Fig 4 into the upper left hand side of the case and secure with the set screw tapped in from the outside At the same time you may install the transmission shift gear into the shifting fork and onto the power transmission shaft l Fia 5 PAGE 4 fter gear 1 Fig 9 onto the l sh nner race ion shaft along he PTO twin idler gear ISS Power transm 1ng 7 of the forward bear t th J Wl is also 9 onto the idl
29. e 4 14 mm nuts and disassemble the shaft support casting l Fig 2 m PAGE 35 Thread 2 of the 10 mm bolts into Generally speaking vou can shake the 2 tapped holes in the flange the cover 1 Fig 4 and pull at of the cover and back the cover the same time to separate it from away 2 Fig 3 the case Do not use pry bars or heavy hammers You may damage transmission components Note Use caution to alternately tighten these 2 bolts to minimize binding as the cover is removed Once you have separated the cover from the case remove all shaft assemblies from the cover When the cover is backed off enough to overcome the presses bearings and shafts it may sag yet not come completely off Certain shaft assemblies may be coming with the cover EN this condition Note All transmission shafts and gears must be assembled into the front case Defer e the cover is re installed The cover should have only bearings and PTO and range shifting levers installed in it before re assembly You may now proceed to disassemble Shafts and gears from the case to identify remove and replace the discrepant parts PAGE 36 DISASSEMBLY OF THE RANGE GEARS FROM General The desired range is THE FRONT PINION SHAFT selected by sliding the shifting COL sy dq I6 529 Tore or ait To remove dnd replace the range along the pinion shaft The gears the range drive key the snirting collar B Fige 6
30. e forward end the bearing into the counter bore and secure it with the snap ring PAGE 48 Note Experience has shown that the REMOVING THE FRONT COVER TO THE fasteners that secure tne REAR DIFFERENTIAL CASE barrel casting to the rear case cover may loosen up under maximum loading To minimize this condition we recommend using a good thread sealing compound to secure the studs 3 Fig 12 Will provide access to l The rear ground drive pinion Shaft S25 Flg L5 2 The PTO input shaft 5 Fig 1 4 All seals and bearings for these 2 shafts SS S SS S ES SS SS bs s WS AS AES sa e Y Remove 6 10 x 55 mm bolts and 2 10 mm special shoulder screws 4 Fig 1 that secure the cover to the rear case e After the studs are properly sealed and tightened into the cover the barrel casting may be installed onto the cover Be sure the ground drive coupler is in place 2z F19 T2 Remove the cover with the PTO input shaft installed into it Install the 4 flat washers and 3 Fig D Be sure that the torque the 4 self locking nuts needle bearing in the aft end of 80 85 ft lbs of torque the PTO input shaft is in place PAGE 49 Inspect cover and shaft assembly 4 The ground drive PTO shifter for defective parts and replace and drive gear in place ds required os Pls a Note Exercise caution when replacing the lower seal on the PTO shaft This seal is not pressed up against a s
31. e pilot shaft and ther up to the main power shaft in the transmission x Proceed with the removal and replacement of the damaged parts Re installation of the front axles can be accomplished in reverse order of disassembly The 10 mm bolts securing the axle to the gear box and the power steering attach brackets to the axle housing are to be torqued to 32 36 ft lbs PAGE 14 CAUTION Care must be exercised to replace and re install the gasket between the axle flange and the transmission case Clo FIG 3 Attention should also be directed to replacing any shims l Fig 5 installed between the tapered roller bearing 2 Fig 5 and the ring gear 3 Fig 5 at the factory These shims are selective ly installed to obtain the correct fit between the ring and pinion gear PAGE 15 DISASSEMBLY AND RE ASSEMBLY OF Figure 2 identifies the parts of FRONT AND REAR DIFFERENTIAL the front and rear ring gear and SUB ASSEMBLY differential carrier sub assemblie Once the left front or right rear axle sub assemblies are removed from their respective cases the ring gear and differential carrier assemblies can easily be removed for inspection and or repair Disassembly Tap back the locking tabs securing ES 9 the 8 10 x 30 mm bolts 1 Figa a ig 2 Planetary gears ig 2 Retaining pin ig 2 Locking plate 2 Cross pin 2 Differential carrier Qu 2 Satellite gears
32. er shaft g F 2 idler shaft wee ee RE Tm qq Ww 0v gu S O Q C O O OW x a 2 eus ES q o aS E aN Oy O re CO A Uc Q5 y E CO d x del CO i ca E N OD O Q5 I omo c N amp Z 4 QU D d UO ei po CT O E Cc X UU XD ws 4 o co Z H Cc NM i O UO 413 oa C OG UC 5 O Z A Q ec OOS gt C O L L UU 25 oO c o m I qo O L UN sam U cC xc d O OG eS O s O O x 413 H 4 O O t0 O N Ce y c N HMO z i CO l a LN Li Mc ME CD NY lt Z LL oD JO U gx aso X Z Oe amp GNI 4A c O O L O o Z 055 O QD lt wo amp as tb oe ee aN og SASS SERS a 7 oS OQ 8 0 O O 21 T oOo O OV HM rx Lk O xX zc 1 i O Ce 412 aD LL ra 0 x oO Q0 l note that the Wl 1g F 4 3 on the pre assembled onto it PAGE 42 Place range shifting collar in the low range position to aid in aligning the shift dogs Note All bearings and seals in the aft cover should be pre lubricated with a light grease prior to installation See Figure 11 Thrust washers can now be placed on the aft ends of idler shaft 2 Fig 10 the 1st and 2nd gear shaft 4 Fig 10 and the reverse A Cee a Fig 10 Place a new gasket on the face of the main transmission case 2 Fig 12 and install the 2 threa
33. following information is provided to familiarize the serviceman with the power paths in all gears and ranges so that when testing the tractor he can identify the area of rework For Ist amp 2nd Gear All Ranges See Figs 3 and 4 Engine power is transmitted through the clutch located in the bell housing between the engine and transmission case directly into the transmission power shaft The transmission shifter on the power shaft drives shaft 24 which is in constant mesh with shaft 5 which in turn drives idler shaft 2 which finally drives the front Pinion shaft 3 For Reverse Gear All Ranges The power shaft 1 with its shifter drives the reverse shaft 5 which in turn drives idler shaft 2 which again drives the range gears on the pinion shaft 3 For 3rd Gear All Ranges In this case the transmission shifter on the power shaft Zl drives the idler shaft 2 directly which is in constant mesh with the range gears on the pinion shaft 3 Note The 3 ranges are all located on the pinion shaft The ranges are selected by positioning the internal drive Key so that it aligns with the high medium or low range drive gears These range drive gears are driven by and are in constant mesh with gears on the idler Shaft For PTO 540 amp 760 Speeds The PTO shifter gear on transmission power shaft Zl meshes With the double gear on the idler shaft 2 which is in constant mesh with an idler on
34. for Cracks Jf pump is cracked look for d cause like too much pressure or hoses that are attached incorrectly Load Drops With Control Valve in Neutral Position d Leaking or broken oil lines from control valve to cylinder Check for leaks Tighten or replace lines Examine mating surfaces on couplers for irregularities b Oil leaking past cylinder packings or Q rings Replace worn parts If wear is caused by contamin dtion clean hydraulic system and determine the source c Oil leaking past control valve or relief valves Clean or replace valves Wedr may be caused by contam ination Clean system and determine source of contamination d Control lever not centering when released Check linkage for binding Make sure valve is properly adjusted and has no broken or binding parts PAGE 60 re M M Hard d Misalignment or seizing of control linkage Correct misalignment Lubricate linkage joints Tie bolts too loose on valve stacks Use manufacturer s recommenda tion to adjust tie bolt toraue c Valve broken or scored internally Repair broken or scored parts Locate source of contamination that caused scoring C2 10 Contro Valve Leaks Oil d Worn or damaged O rings Replace O rings especially between valve stacks If contamination has caused O rings to wear clean system dnd look for source of contamination
35. ged cases seals or gaskets Check dll shifting linkages clutch linkages and operating levers for damage or binding Check clutch free play if 2 ilcoFrectu adjust to 3 8 to 1 2 Fig 2 clarifies the identification of the shafts discussed in this procedure Proceed with noise isolation Place transmission range PTO and differential lock levers in a neutral position d Run engine through d ranae of speeds 1200 to 2200 RPM s With the clutch engaged chec for noise or vibration in the flywheel or bell housing area D jn the bearings on the pewer transmission shaft With the clutch disengaged check for noise or vibration Jn the throw out bearing ssIn Ne DITO pearing Witn the transmission lever in Ist gear and 2nd gear and all others in neutral check for noise or vibration In gears and bearings on lst and 2nd gear shaft 4 Fig 1 In reverse shaft and bearings 55 Fios 19 In idler shaft 2 Fig D Transmission lever in 3rd gear all others In neutrals Cieck Ta noise or vibration In gears and bearinas on idler Shah C23 Figg 1 4 VI Transmission lever in reverse all others in neutral check for noise or vibration n gears and bearings on reverse shaft 5 Fig 1 n gears and bearings on idler snatt 25 Fige dj Range lever in low medium and high range successively X transmission in any gear PD an Neutral ae
36. ght or where there is good artificial light Watch for deep holes or other hidden hazards Do not drive too closely to deep ditches creeks or other hazards Reduce speed when on rough terrdin or making sharp turns particularly when on a hillside PAGE H jc e Avoid sudden stops and starts Do not leave the tractor unattended while it is running Keep the tractor in gear while going down a steep grade Adjust the weight distrib ution if wheels come off the ground shut off the engine and set the hand brake before making any adjustments or repairs on the tractor Do not touch the engine or muffler while the engine is running It is hot enough to cause d burn To reduce fire hazard keep the engine free of grease grass leaves or other flammable material 16 Do not over Speed the engine Maximum speed of the engine is 3000 RPM s unloaded Any us adjustments to the governor settings should be made by a 7 trained authorized dealer using an external tachometer Do not check the engine oil level or hydraulic oil level with the tractor running Do not add hydraulic oil or engine lubricating oil with the engine running PAGE 5 REMOVE amp REPLACE CLUTCH Access to the dry single stage clutch is obtained by unbolting the engine bell housing assembly from the front face of the transmissions Gly FIGs 39 In prepara
37. hOCk in neutrals or vibration differential Check for noise In gears and bearings on idler Shaft 25 Fig 1 n gears and bearings on front pinion shaft 3 Fig 1 and in rear pinion and ring gear esf gears and bearinos in front and rear differential Ee final drive reduction in C all axles excluding model 986 PTO lever in 540 or 760 ground speed PTO leyer under the seat in the independent position raised up all others in neutral Check for noise or vibration In shifter on power input celare Cb 195 PAGE 28 n twin gear on idler shaft 2 Floe 7 In idler on pinion shaft 5 tela 36 In gears and bearings on PTO output shaft 6 Fig 7 In PTO drive line through the center of the tractor In gears and bearings on PIO input shaft rear case In gears and bearings in lower PTO output shaft rear case In gears and bearings in upper PTO output shaft rear case 1 5 8 6 spline 1O perform a check on the front differential lock TENE the transmission anc range levers in neutral Jesum the steering wheel fully TOIL and then left and observe to see if the outboard wheel is scuffing If both wheels rotate freely the differential lock js inoperable PAGE 29 Note Confirmation of suspected gear 2 Removing the right aft axle train problems can often be from the rear differentia quickly isolated and
38. houlder and care must be taken to assure the seal is straight with the bore not tibDDed 7 609 3 Remove the pinion drive shaft from TRES TA the rear case and inspect for Figure 2 shows the rear differentia damaged parts 2 Fig 5 case with the cover removed and the Rear pinion drive shaft in POSITION 02 Figs 2 2 The PTO final drive shaft in position 3 Fig 2 T s Es PAL E EET te ICM Kip Og ai G1 2295 Ce ee 2d E p Do oe ee ee Loo 75 4 5 4 Lea PERM ges AE OCDE ene 2 Magee c b Lee TI tak es ie jd A Ae Y TII ae Me Fig 4 shows the assembly sequence of the parts mounted onto the pinion shaft LEE 225 Ue DU Fig 5 shows and laid out p 2 3 4 5 6 7 8 Ja Fi FE j bL Rb Lb Tm oT es hee U AC AQ p s Q Fig Fig Fig 4 B ade A go go go go go aps o 4 d amp amp amp the same parts removed for easy identification gt Backlash Shims Rear Pinion Shaft Rear Cone Bearing split Thrust Rings Thrust Washer Ground Drive Gear amp Pin snap Ring PTO Idler Gear Thrust Washer 10 Fig 4 amp 5 Front Cone Bearing 1l Fig 4 amp 5 Thrust Washer Disassemble discrepant parts from the pinion shaft and re install replacement parts Use caution to use the same number of backlash shims that were removed arn PAGE 5 The ground drive PTO shifter gear Fig
39. mped into the housing as shown I TI9Ure CL qd 59 ne displacement for each model pump is listed below The Part No Displacement at M 3000 RPM AM 1 5 3 1 GPM AM 2 2 44 GPM AM 2 24 5 4 GPM The primary pressure relief is mounted on the upper forward end of the tandem center lift valve It is pre set at the factory to 1500 psi Figure 6 shows the schematic for the standard hydraulic system witt optiondl power steering Figure 7 shows the point to point hook up of these same components TROUBLE SHOOTING HYDRAULIC PROBLEI steps to take A O TJT mMm a ae wW Know the system Ask the operator owner Operate the machine Inspect the machine List possible causes Reach your conclusion Test your conclusion system Inoperative No oil in system erro publ mark Check system for leaks Oil low in reservoir Check level and fill to full mark Check system for leaks Oil of wrong viscosity senebher TOo specITregblons TOF proper viscosity Filter dirty or plugged Drain oil and replace filters ry to find source of contam ination PAGE 54 CINTES Th PASQUALI STANDARD HYDRAULIC SYSTEM WITH OPTIONAL POWER STEERING LINE DIAGRAM Open Center Non Load Reacting Steering Motor Tandem Center Lift Valve Dual Single Acting is Power Steering Cylinders UNE t HEEL LE E Filter Strainer Cylinder EA Positive Displacement Gear Pump ELGURE 7 P
40. outlined in axle removal procedure Note Model 986 and smaller tractors do not have final drive gear reduction Inspect brake drum for cracks scores and wear l Fig 15 New drum I D is 248 mm PAGE 22 Re assembly is in reverse of disassembly E Inspect lining on brake shoes for wear or defect New lining thickness is 5mm gt 2 To remove shoes detach cotter pin ich retain washers and spring wh shoes to brake backing plate 1 Fig 14 Remove the 2 return springs 2 Fig 14 Inspect actuating cam 3 Fig 14 and return springs Repair or replace all worn or damaged parts PAGE 23 BRAKE ADJUSTMENT There also exists a third function for brake adjustment An expandable block located On articulated tractors there are opposite the shoe expanding cam two adjustments required for proper in the brake backing plate brake performance 1 Fig 15 is adjustable to take up wear of the shoes 1 There is an adjustment on each wheel brake lever for the purpose of uniform braking on each whee when pressure is applied to pedal Access to adjustment bolts is gained by prying the brake lever forward thereby making bolt head accessable from carrier for ddjustment Refer to Figure 2 This adjustment will be necessary in later life of the brake shoes to provide uniform shoe wear 2 The pedal adjustment bar located on right side has a series of holes drille
41. stalled quickly and easily Replace the gasket and re torque the 6 mm bolts 8 10 ft 1bs The pump can be removed by discon necting the banjo fittings from the pressure and suction ports and removing the 4 6 mm bolts and nuts Figure 5 shows the drive hul on the pump l Fig 3 and its matching drive adapter 2 Fig 5 bolted to the engine flywheel YOR d 7 7 PAGE 62 Figure 4 shows the drive hub removed After the 6 mm nut is properly from the pump shaft with related Parts CA S o SOS Clo PIG 4 Drive Hub 2 Fig 4 Woodruff Key 3 Fig 4 Locking Washer 4 Fig 4 6 mm Hex Nut Inspect dll parts replace those torqued bend up the locking tabs On the locking washer 3 Fig 4 Refill the hydraulic reservoir with No 20 weight SAE non deteraent oil Start the tractor and cycle all of the hydraulically operated functions Rear lift 2 Power steering 4 Dozer loader etc RET LLE he reservolr 10 be 2 tog inches down from the filler tube You may now install a pressure gauge into the system to verify that the pump is providing adequate pressure With the engine running dt 2200 2400 RPM s the pressure relief should dump back to tank dt approximately 1500 psi that dre defective and re assemble E lt ih reverse order of disassembly hub to the pump shaft you must be careful not to over torque the 6 mm nut 4 Fig 4 This nut should no
42. t be torqued more than 25 30 ft 1bs lt Note When re assembling the drive PAGE 63 REMOVE THE REAR LIFT CYLINDER amp DIS ASSEMBLE ROCK SHAFT Remove the sedat and fenders for easy UCE S The lift cylinder may be removed by pulling the forward and rear support pins Note The rear support pin must be removed through a cut out in the right hand side of the frame 1 Fig 1 GG 277 9252 937 Disconnect the hydraulic line from the lift cylinder Watch for the restrictor installed between the banjo fitting and the hose fitting This restrictor is designed to control the drop in the lift assembly by limiting the rate oil can return to tank The hydraulic lift cylinder may nov be removed for overhaul or replace ment REMOVE THE REAR ROCK SHAFI Remove the snap rings and slide off the two rock shaft arms 1 Fig 2 SAM Ws AUS WS S Remove the 4 10 mm bolts that secure the bushing carrier to the main support frame 1 Fig 3 M AULA Mie SY S 3 SS SM dim A am ANS AN CREME NONE dee INN NS uM 3 SS a dpa Y 2 S S x 3 N BNR RIS SES S aS RS SON SORES B wn PAGE 64 Pull the pin securing the rock shdft to the end of the cvlinder slide the cvlinder rod forward and pull the rock shaft out through the CUT OUT imn tHe support Trane Lx ly 1 Inspect all parts carefully replace those that are defective and re assemble in reverse order of
43. the pinion shaft 3 which finally drives the PTO output shaft 6 PACT 26 SOME TYPICAL DRIVE TRAIN PROBLEMS Case Ilf AND THEIR MOST LOGICAL CAUSES symptoms 1 Wheel does not rotate freely 2 Noise isolated to axle Case housing Symptoms 3 Tractor shifts normally in 1 Transmission shift lever all gears and ranges shifts normally 4 Possibly ground drive only 2 No ground drive one axle 3 PTO shifts and operates Probable Cause normally l Final reduction in axle 4 Range lever may or may not hub is damaged shift normally 2 No appreciable noise Probable Cause l Broken range pbi Key Case II Symptoms gt 1 Tractor has ground drive but there are sharp cracking moises heard intermittently 72 Transmission shifts normally through all gears and ranges 3 After isolating the noisy X axle Jack it up and rotate one wheel with the transmis sion in neutral The other wheel should rotate in the opposite direction freely and without hesitation or noise Probable Cause 1 Inoperative differential Probably broken satellite gears oe PAGE 27 ISOLATING PROBLEM To clutch housing area l transmission uo final around drive or rear wheel drive Note This suggested trouble shooting procedure assumes that a noise accompanies E is BEIM Prior to testing the tractor inspect the exterior of the machine thoroughly Look for leakage due to dama
44. tion of tractor by Jacking on the differential housing Remove rear wheel s The brake rock shaft must be rotated Or removed in order to remove the left or right axle housings Accomplishing this requires disassembly of the brake actuating mechanism on the tractor s right Side See Figure 1 To aid in orientation Figure 1 identifies the parts of the brake actuating mechanism on the right Side l Right brake rock shaft arm 2 Stop plate 3 Shoulder bolt 4 Right adjustment bolt 5 Right brake lever 6 Pedal adjustment bar Proceed as follows with disassembly of right side brake linkage det PAGE l8 Pry right brake lever forward to allow removal of brake adjusting DOLI 586 Figuro Zy Pry brake lever forward and remove stop plate 1 Fig 4 and pedal adiustment bar 2 Fig 4 The right rock shaft arm can now be removed from rock shaft 35 qs d Remove shoulder bolt 1 Fig 3 Remove 8 mm bolt connecting pedal adjustment bar to pedal Remove roll pin in rock shaft 2 Fig 3 PAGE 19 led EO Removal of the dke lever may itate removal of arm Is oD r Right arm Note rock shaft hand fa hr hyl il V 6 FIG Re assembly is done in reverse SN Se Install new Torque axle housing bolts order of disassembly tO H5 Tt lS gaskets shaft arm ing through roll LGU rock F gnment of r li A
45. tion to remove the engine bell housing assembly you must disconnect 1 Hydraulic pressure and return lines at the lift valve 2s FTO 1 2 The accelerator and fuel shut off cables Fig 2 and the decompression cable if applicable 3 Fuel supply line Fis 3 and excess fuel return lines from the injectors to the fuel tank he MD inate 4 Electrical wire bundles at the starter switch the light switch oil pressure warning light starter and voltage regulator Note Support the engine bel housing assembly prior to removing all 6 bolts Os 7 5 The 2 10 x 16mm bolts at the top Fig 4 and the 2 8 x 55mm bolts that secure the bottom of the battery case to the engine bell housing assembly Fig 5 te Roll the engine forward off the xc Ds transmission pilot shaft Fig 8 After verifying that the engine is clear for removal remove the 6 10 x 35mm bolts securing the aft face of the bell housing to the front of the transmission Fig 6 dp ep too ZEIT A pP Remove 6 8 x 20mm bolts securing the pressure plate to the flywheel 165 B and remove the friction disc ied Rel a ai PAGE 7 wn Pees n Vay d 1 PEG Remove and replace all worn and damaged parts Inspect throw out bearing F 4 eo i 1 Check torque on flywheel nut Fig 10 200 ft lbs FIG 2 l FIG
46. ts tee A w 6 Power steering input and return 8 hoses at the manifold block teas alee The drive shaft shield by removing 4 8 x 12mm bolts Che Bb 7 7 The dash panel by removing 2 CAUTION Place some blocking under 10mm bolts and nuts and the front end of the loosening the hexagon mounting tractor Stud Tor tne nyaraulic TIft EVE Cl 18v 5 When separated the front end is extremely nose heavy PAGE 32 14 x 35mm bolts 9 Remove the 2 threaded into the transmission housing and the 4 12 x 30mm bolts threaded into the lower drive shaft support casting Clo FIGs 39 Ihe tractor is now ready to separate The forward section consisting of the engine transmission and front axle may now b separated from the rear section consisting of the central steering section the rear differential case and i rear axle Roll the aft half of the tractor to the rear Make use of the shaft support casting as a shelf to support the central steering weldment 1 Fig 9 NOTE The ground and PTO drive lines will slide freely from the shafts on the aft portion of the tractor The forward and rear section may now be completely separated to facilitate trouble shooting and repair PAGE 33 REASSEMBLY OF TRACTOR HALVES Support the aft section of the tractor on a floor jack so the wheels can be turned Roll the aft section forward until the
47. ure 7 snows the PTO final drive 1 Fig 6 may be replaced by Shaft looking through the rear axle removing the 5 6 mm bolts attach hole The spur drive gear 2 Fig 6 that secure the 1 Fig 7 is meshed and driving shifting fork to the carrier the SAE 1 3 8 6 spline PTO gear Ze ids 735 After the shifter gear is replaced torque th 6 mm bolts to 8 10 ft lbs and tap the locking tabs into place to secure the bolts The PTO final drive is most easily removed with the left axle housing off Refer to page 17 for detailed FIO 8 instructions on axle removal ae ae E Figure 8 identifies all parts assembled onto the PTO final drive shaft They are listed below for identification purposes ws 8 Hourglass Drive Hub 8 Rollpin 8 Snap Ring 2 8 Oil Seal Rear Roller Bearing 8 Spur Drive Gear 8 Snap Ring 2 8 PTO Final Drive Shaft 8 Support Bushing 10 Fig 8 PTO Shifter Gear m p O 43 ws ws Ke Bs ws 0 de Cy G XC y 6 es TED We Wi ae TN TN a C gt pa ws WO o N OU FW N New Nes E e u PAGE 52 To remove the PTO ground drive shaft from the case you must tap out the No 2 rollpin and slide off the No 1 hourglass drive Remove the No 3 snap ring from the shaft and the larger snap ring Securing the Seq into he bore Hook out the No 3 seal will require destructive disassem
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