Service Manual 50 SerieS Digger MoDelS example Part
Contents
1. IDGE SERVICE MANUAL 50 SERIES DIGGER MODELS Example Part Number a GT E Motor Motor Model Ratio Shaft Bail Boss Supplier N mb r THIS SERVICE MANUAL IS EFFECTIVE NOTE Individual customer specifications spindle S N 58670 TO CURRENT mounting sprocket pilot brake assembly etc may vary from exploded drawing and standard part num bers shown If applicable refer to customer drawing DATE 9 2003 TO CURRENT VERSION SMD50L AC h for details Single Stage Exploded View Drawing CEskridge 5005 21F55 EFFECTIVE FROM S N 83000 DATE 04 26 10 TO CURRENT MODEL D50 DIGGER WITH INTEGRAL BAIL ITEM DESCRIPTION PART NO BASE INTEGRAL BAIL 50 004 3303 OUTPUT SHAFT 2 HEX 516 HOLE 0 004 4082L BAIL ASSEMBLY 1 1 4 BAIL BOSSES 50 005 2132 BAIL ASSEMBLY 1 BAIL BOSSES 50 005 2142 INPUT GEAR 85 004 1262 CARRIER ASSEMBLY SECONDARY 50 005 2031 RING GEAR 0 004 1033 THRUST WASHERS 8 BEARINGS 9A THRUST WASHER INPUT 50 004 1091 9B 1 THRUST WASHER SEC CUP 50 004 1011 10 SEALS amp O RINGS 10A O RING 01 402 0560 10B OUTPUT SHAFT SEAL 01 405 0530 7 OUTPUT SHAFT BEARINGS othe 11A OUTER CONE 01 102 0140 Fa OUTER CUP 01 103 0140 i INNER CONE 01 102 0150 10A r INNER CUP 01 103 0130 ly O HARDWARE 12A 128 12c S 14 MISCELLANEOUS 14A SHIM 50 004 1521 bn 14B LOCK RING 50 004 1462 SPLIT RING MODEL 50 50 004 1452 GASKET 90 004 1081 MOTOR 01 3042. 0550 Mi UI N NOTES BEARING PRELOAD DETERMINES QUANTITY OF SHIMS SEAL KIT PN 85 016 0601 INCLUDES 2 EA ORINGS AND 1 EA SEAL X5005 21F55aa ECN DATE 04 20 10 HWP Model D50 service manual SMD50L AC Page 2 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com Double Stage Exploded View Drawing CEskridge 5016 21F54 EFFECTIVE FROM S N 83000 DATE 04 26 10 TO CURRENT MODEL D50 DIGGER WITH INTEGRAL BAIL DESCRIPTION PART NO BASE INTEGRAL BAIL 50 004 3303 OUTPUT SHAFT 2 HEX 516 HOLE 50 004 4082L BAIL ASSEMBLY 1 1 4 BAIL BOSSES 50 005 2132 BAIL ASSEMBLY 1 BAIL BOSSES 50 005 2142 INPUT GEAR 85 004 1122 CARRIER ASSEMBLY PRIMARY 50 005 2011 6 1 SUNGEAR 85 004 1412 CARRIER ASSEMBLY SECONDARY 50 005 2041 8 1 RING GEAR 50 004 1023 9 THRUST WASHERS amp BEARINGS 9A THRUST WASHER INPUT 50 004 1091 9B THRUST WASHER SEC CUP 50 004 1011 10 SEALS amp O RINGS 10A O RING 01 402 0560 10B OUTPUT SHAFT SEAL 01 405 0530 1 OUTPUT SHAFT BEARINGS OUTER CONE 01 102 0140 11B OUTER CUP 01 103 0140 INNER CONE 01 102 0150 INNER CUP 01 103 0130 HARDWARE 12A SHCS 7 16 20 X 4 1 2 GR8 01 150 1820 12B LOCKWASHER 7 16 01 16 0340 12C 12 PT CBORE CS 1 2 13 X 1 25 GR8 01 150 1460 PIPE PLUG 3 8 NPT MAGNETIC 01 207 0070 14 MISCELLANEOUS SHIM 50 004 1521 LOCK RING 50 004 1462 BEARING PRELOAD DETERMINES QUANTITY OF SHIMS SEAL KIT PN 85 016 0601 INCLUDES 2 E
3. until it is just seated against bearing cup 11D With a slight press load still applied rotate base 1 by hand to ensure roller bearings are rotating evenly and smoothly Inner bearing cone 11C may require additional press load to reach proper bearing preload If roller bearings are seated properly continue on to set and check bearing preload SHAFT BEARING PRELOAD Proper shaft bearing preload is achieved when torque required to rotate base is 50 to 80 in Ibs This rolling torque is equal to a force of approximately 11 to 18 Ibs if pulling on base flange to rotate base 1 This may be determined by feel or by using a fish scale or similar mea suring device to check rolling torque 8 _ Install shims 14A over internal end of output shaft 2 Shims should slide all the way down to outer bearing cone 11C where they will rest The same number quantity of shims removed from unit during disassembly should be returned Follow shims with split ring segments 14C Segments will sit directly on top of bearing shims NOTE Quantity of shims 14A may vary from unit to unit Bearing preload set at the factory determines quantity of shims 9 Install the locking ring 14B onto output shaft 10 Lightly grease a new o ring 10A and install it into o ring groove in base 1 Assemble ring gear 8 to base 1 Re fer back to scribe marks made across external joints of gear drive prior to Disassembly Procedure Line up scribe mark
4. A ORINGS AND 1 EA SEAL X5016 21F54ab ECN 3393 DATE 11 15 11 HWP Model D50 service manual SMD50L AC Page 3 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com LUBRICATION amp MAINTENANCE Using the chart below determine an appropriate lubricant viscosity Use only EP extreme pressure or API GL 5 designated lubricants Change the lubricant after the first 50 hours of operation and at 500 hour intervals thereafter The auger drive should be partially disas sembled to inspect gears and bearings at 1000 hour intervals Recommended ambient and operating temperatures for conventional and synthetic gear lubricants 50 25 0 25 50 75 100 125 150 175 200 225 250 F 80W90 conventional 75W90 conventional 85W140 conventional Min Ambient operating temp Max Ambient temp Max Operating temp 75W90 synthetic 80W140 synthetic 45 32 18 4 10 24 38 52 66 79 93 107 121C Note Ambient temperature is the air temperature measured in the immediate vicintiy of the gearbox A gearbox exposed to the direct rays of the sun or other radiant heat sources will operate at higher temperatures and therefore must be given special consideration The max operating temp must not be exceeded under any circumstances regardless of ambient temperature If your unit was specified shaft up or with a Z option a grease zerk was provided in the base housing For shaft up operation the output bearing will not run in oil and must be grease lubri
5. cated Use a lithium based or general purpose bearing grease sparingly every 50 operating hours or at regular maintenance intervals Over greasing the output bearing should be avoided as it tends to fill the housing with grease and thicken the oil ESKRIDGE MODEL D50 OIL CAPACITIES Operating Position Oil Capacity Oil Level Single stage Double stage Triple stage Horizontal Shaft To horizontal centerline of auger drive L Vertical Shaft Pinion Down 2 pints 0 95 liters 2 5 pints 1 18 liters To midway on upper igi primary gear set WARNING While working on this equipment use safe lifting procedures wear adequate clothing and wear hearing eye and respiratory protection ESKRIDGE PART NUMBER INTERPRETATION Note All non custom Eskridge Geardrives are issued a descriptive part number which includes information regard ing the Model means of shaft retention base style shaft style input mounting input shaft size overall ratio and various available options For a detailed breakdown of this information please refer to Eskridge product specifica tion sheets found at http www eskridgeinc com diggers diggerprodspecs html Model D50 service manual SMD50L AC Page 4 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com Unit Disassembly Procedure There are two types of model D50 units single planetaries with out a primary carrier and double planetaries with a primary planet carrier The differences in disassemblin
6. g single stage and double stage gearboxs are clearly defined throughout this manual All parts should be inspected as they are removed from unit 1 Scribe across base 1 ring gear 8 and cover bail assembly 3 joints on outside of gearbox to assure proper orientation of oil fill and drain plugs motor mounting etc as the unit is reassembled 2 Remove hydraulic motor 15 from auger drive Drain oil 3 Remove the twelve 7 16 x 4 1 2 socket head cap screws 12A and 7 16 lockwashers 12B which retain cover bail assembly 3 and ring gear 8 to base 1 4 Lift cover bail assembly 3 off of unit Single stage Remove input gear 4 input thrust washer 7A 7B carrier assembly 7 and ring gear 8 Double Stage Remove input gear 4 input thrust washer 9A primary carrier assembly 5 Remove secondary sun 6 thrust washer 9B and secondary carrier 7 5 The gearing is now disassembled and area s requiring re pair or service should be identified by thorough inspection of the parts after they have been washed in solvent Rotate planet gears to check for any abnormal noises or roughness in the primary planet bearings At the same time inspect planet gears for any damage or worn teeth Replace carrier assembly if any problems are found in the carrier assembly Base Subassembly Disassembly 1 Place unit on a press table with the output shaft 2 protruding downward through a hole in the table unit
7. it Reassembly 1 Start with base 1 Turn base upside down and position on press table Base should be pointing upward with outer bearing cup 11B exposed Apply a layer of lithium bearing grease to bearing cup surface 2 Invert output shaft 2 load n lock retainer groove end down and carefully lower into base 1 until the shaft s out er bearing cone 11A is seated against outer bearing cup 11B 3 Press shaft seal 10B into base until it is flush with bottom of pilot diameter Use a press fixture if possible to avoid distort ing seal If press fixture is not available a hammer and flat ended drift may be used by tapping outer edge of seal lightly and alternating sides 4 Stand base assembly upright on output shaft CAUTION The only thing holding output shaft and base to gether at this point is the tightness in fit of the shaft seal Se curely and cautiously turn unit upright not allowing base and shaft to separate 5 _ While holding output shaft 2 with one hand rotate base 1 to be certain it turns freely and smoothly The slight resistance felt if any is due to shaft seal load drag on output shaft 6 Apply a layer of lithium bearing grease to inner bearing cup 11D surface 7 Install inner bearing cone 11C small end down over inter Model D50 service manual SMD50L AC Page 5 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com nal end of output shaft Press bearing on slowly
8. s between ring gear and base to give correct hole alignment NOTE Be certain that o ring 10A stays seated in groove during Step 10 11 Install secondary carrier assembly into unit Carrier assembly should be installed with hub side down 24 tooth spline Rotate carrier assembly back and forth to mesh secondary planet gear teeth 7 with ring gear 8 teeth Once teeth mesh let secondary carrier slide down until it contacts with output shaft spline The carrier splined hub should spline onto output shaft Carrier hub will rest on top of locking ring 14B when splines are fully engaged 12 Install the carrier cup washer 9B Single stage Install input gear 4 input thrust washer 9A Double Stage Install secondary sun gear 6 primary car rier assembly 5 input gear 4 and input thrust washer 9A 13 Grease a new o ring 10A and install it into bottom of cover bail assembly 3 Refer back to scribe marks made across external joints prior to Disassembly Procedure Line up scribe marks between cover bail assembly and ring gear 8 so that orientation of motor mount holes and oil plug are back to their original positions NOTE Be certain o ring 10A stays seated in cover bail assembly during Step 13 14 Install all twelve of the 7 16 lockwashers 12B and the 7 16 hex capscrews 12A and torque to 70 ft Ibs 15 Fill unit with oil per the capacity and lubricant recommenda tions posted on page 4 16 In
9. should be support ed only by the base 1 The only thing retaining output shaft 2 is the locking ring 14B and split ring segments 14C Remove the locking ring 14B by prying upward split ring segments 14C and shims 14A CAUTION The Load n lock assembly is no longer retaining output shaft Take precautions if the unit is moved as the shaft may fall out 2 With output shaft down through centerhole in press table and unit supported by base press shaft out by applying press load to top end of shaft internal end until it passes through inner shaft bearing 11C Outer shaft bearing 11A and seal 10B will come out of unit attached to shaft 3 Inspect inner and outer bearing cups 11B amp 11D If cups are damaged remove and replace both bearing cups and cones CAUTION Care should be taken not to injure feet or damage output shaft during this procedure 4 If outer bearing cone 11A needs to be replaced it will need to be pressed off of output shaft Also inspect inner bearing cone 11C If any one bearing component needs replaced replace the both the cup and cone as a set NOTE When installing or removing bearings press only on inner race of bearing cone DO NOT press on outer roller cage of bearing or it will damage bearing 5 Clean all foreign material from magnetic oil plug 13 located on bottom of base 1 Add a small amount of pipe thread compound to pipe plug before installing it back into base Un
10. stall motor 15 with gasket 14D using hex head cap screws 12C and torque bolts to 55 ft Ibs THE AUGER DRIVE IS NOW READY FOR USE Model D50 service manual SMD50L AC Page 6 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com
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