SERVICE MANUAL
Contents
1. IDGE SERVICE MANUAL MODEL 55T FINAL DRIVE WARNING While working on this equipment use safe lifting procedures wear adequate clothing and wear hearing eye and respiratory protection THIS SERVICE MANUAL IS EFFECTIVE NOTE Individual customer specifications spindle S N 85472 TO CURRENT mounting sprocket pilot brake assembly etc may DATE 6 1 09 TO CURRENT vary from exploded drawing and standard part num VERSION SM 55T AA ek ia If applicable refer to customer drawing LUBRICATION amp MAINTENANCE Gearbox nominal operating temperatures are between 122 F and 158 F Use the chart below to determine the appropriate lubricant viscosity for your application by choosing the highest foreseen temperature and rpm If the gearbox is operating outside of these tem peratures contact Eskridge In applications with very low output speeds and heavy loading always choose high viscosity oils Heavy use applications with high continuous loading and temperatures require a plyalphaolefin synthetic lubricant 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 gear drive should be partially disassembled to inspect gears and bearings at 1000 hour intervals Operating Position Oil Capacity Oil Level Fill level 6 quarts 5 5 liters Drain plug orientation ESKRIDGE SERIAL TAG AND PART NUMBER INTERPRETATION Note2. All standard Eskridge Geardrives are issued a descriptive part number which includes information regarding the Model spindle style hub mount input spline configuration service brake specifications overall ratio and vari ous available options The serial tag located on the cover provides all necessary product information to identify the final drives components For a detailed breakdown of this information please refer to Eskridge product speci fication sheets found at http www eskridgeinc com geardrives gearprodspecs html Model 55T Final Drive service manual SM 55T AA Page 2 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com Cover and Planetary Gearing S il Cover and Planetary Gearing Disassembly and Reassembly Inspection 1 Install O ring 16C onto bearing carrier assembly 1 Disconnect brake release line from spindle Remove hex head 2 Place tertiary planet assembly 5 onto spindle splines cap screws retaining motor to spindle then remove motor Take out fasteners retaining sprocket to ring gear flange Orient 3 Install tertiary sun gear 8 and shaft coupler 11 one cover 3 drain plug 30A in the downward position and remove both plugs from unit The oil will drain out more quickly and completely if warm Remove fasteners retaining final drive Place a thin film of oil onto the ring gear 2B cover and bearing carrier pilots Place ring gear over tertiary pl
3. free wipe No particles of any kind are permis sible on the sealing surfaces Even a hair is sufficient to hold the seal surfaces apart and cause a leak Apply a thin film of oil on the entire seal face of one or both seals using a clean finger or lint free applicator Oil must not contact any surfaces other than the sealing faces If its necessary to replace metal face seal follow steps 3b 3d If not move onto step 4 The seal cavities that retain the metal face seal must be free from foreign material oil grease dirt metal chips dust or lint particles etc before installing the seal Clean surfaces with a lint free wipe and a non petroleum based solvent Install the seal using special installation tool shown in fig ure below Mount the installation tool onto the metal seal ring Lightly dampen the lower half of the rubber torric with one of the appropriate assembly lubricants outlined be low Model 55T Final Drive service manual SM 55T AA Page 4 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com Rubber Torric Spindle and Bearing Carrier Installation Tool JR Seal Ring Approved Assembly Lubricants Isopropyl Alcohol Houghto Grind 60 CT Quaker Solvo Clean 68 RAH Do not use Stanosol or any other liquid that leaves an oil film or does not evaporate quickly 3d Push seal into housing using even pressure When the seal is properly seated you will feel it snap into place Verify the
4. 51 005 0102 Carrier Assembly Primary 4 38 1 551 005 0104 Carrier Assembly Primary 5 64 1 551 005 0101 Shaft Coupler 551 004 1020 SHCS M8 X 1 25 X 30mm C10 9 01 150 2049 Model 55T Final Drive service manual SM 55T AA Page 2 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com Bearing Carrier Bill of Materials Item Description sindle 190mm Pilot for Cartridge Motors 7500 90cc OR 20A 35A 35D Lock Ring Load N Lock 551 004 1016 S Model 55T Final Drive service manual SM 55T AA Page 3 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com SPRING PACK QUANTITY VARIES WITH GEAR BOX RATIO FRICTION PACK QUANTITY VARIES WITH GEAR BOX RATIO Brake Assembly Bill of Materials Item QTY Description Part Number Brake Shaft Input 18T DIN 5480 2 551 004 1019 Thrust Washer 01 112 0230 Rotor Brake Holding Torque Determines Quantity 01 288 0020 Back Up Ring 01 402 0262 Back Up Ring 01 400 0263 86 Spring Brake Holding Torque Determines Quantity 01 261 0290 Internal Retaining Ring 01 160 081 1 Model 55T Final Drive service manual SM 55T AA Page 4 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com
5. anet gear set and align the tertiary planet gears with the ring er gear teeth Align ring gear retention fasteners 25B holes 2 Remove the nine M10 X 1 25 SHCS 25A securing the cover located in the bearing carrier with the threaded holes in 3 to the ring gear 2B Inspect cover O ring 16B and thrust the ring gear Slide ring gear over the bearing carrier pilot washer 20C replace if necessary and O ring 16C Install fasteners 25B with blue thread retention compound and tor to 20 ft lbs 3 Remove sun shaft 10 then take out primary carrier assembly PE Er gt 9 5 Align secondary carrier assemblies 7 planet gears with the ring gear and install secondary carrier Install the sec 5 Remove secondary sun gear 8 and lift out secondary carrier ondary sun gear 8 and rotate the carrier until the carrier assembly 7 spline couples with the tertiary sun gear 6 7 Remove two M8 X 1 25 SHCS 25B retaining ring gear to 6 bearing carrier Install two M10 X 1 5 eyebolts into ring cover mounting location and remove ring gear 2B Inspect bearing carrier O ring 16C and replace if necessary Install the primary carrier assembly 9 on the second ary carrier sun gear 8 Install the sun shaft 10 into the shaft coupler 11 and primary gear assembly 9 7 Install cover 3 pilot into the ring pilot 2B then rotate 8 Remove shaft coupler 11 and tertiary sun gear 6 and take off the cover until the prim
6. ary gear teeth 9 mesh with the tertiary carrier assembly 5 cover gear teeth Align the cover though holes with the 10 Clean and inspect components identify any individual compo ring gear threaded holes Place blue thread retention nents that require repair Rotate planet gears to ensure planet compound onto the fasteners 25A Install the fasteners bearings roll freely and smoothly replace if necessary A bill and torque them in a crisscross pattern to 37 ft lbs of materials identifying individual components and their subse 8 Place both plug holes in a horizontal position at approxi quent part numbers is provided at the end of this manual mately 2 and 9 o clock then fill the unit with oil Install oil fill plugs 30A Model 55T Final Drive service manual SM 55T AA Page 3 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com Spindle and Bearing Carrier Bearing Carrier and Spindle Disassembly and 1 2 Inspection Remove spindle lock ring 35D using a heel bar or puller Don t pry against taper roller bearing cage 20B when remov ing the lock ring Remove split ring segments 35C and shims 35A Caution Since spindle is no longer retained care should be taken to avoid personal injury Care should also be taken not to damage spindle when it is pressed through bearing carrier 3 Remove bearing carrier 2A from spindle 1 by applying a load to the internal end of the spindle until it passes
7. metal face seals sealing surface is parallel to the spindle or bearing carrier housing and the torric O ring is not budging out Install bearing carrier 2A onto spindle assembly Place bear ing cone onto spindle assembly Press on the inner race of bearing cone 20B using light pressure until the bearing is seated in the bearing cup Install shims 35A and Load N Lock halves 35C over shims into the corresponding spindle groove Then install the lock ring 35D over the segments 35C Proper spindle bear ing preload will result in a rolling torque which varies between 130 170 in lb Add or remove shims to obtain the proper preload The bearing carrier and spindle subassembly service or repair is complete at this time continue unit assembly Model 55T Final Drive service manual SM 55T AA Page 5 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com 1 1 Service Brake Service Brake Disassembly and Inspection This final drive is equipped with a spring applied hydraulic release multiple disc service brake incorporated into the spindle In order to disassemble the brake a light load needs to be placed onto the backing plate 87 Apply only enough force on the backing plate 87 to release the load the back ing plate is applying to the retaining ring 88 Remove the retaining ring Remove backing plate 87 input shaft 4 and springs 86 Apply low pressure air 20 30 PSIG to the brake release por
8. r install the spacer between the last friction disk 82 and the piston 85 Be careful not to contaminate the friction surfaces with dirt grease or fluid media other than what is specified for your par ticular gearbox Lubricate O rings and bores with silicone based lube or with mineral base oil Gently slide Piston 85 into spindle Press down firmly on piston until the piston 85 is firmly seated against the friction pack Do not use a hammer or mallet to install piston Insert springs 86 into piston 85 evenly or symmet rically spaced Install shaft 4 it may be necessary to rotate shaft in order to align the separator plate splines with the shaft splines Install backing plate 87 then place load onto backing plate and install retaining ring 88 Model 55T Final Drive service manual SM 55T AA Page 6 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com Disconnect Cover Assembly Standard Cover Assembly Cover Bill of Materials Part Number 01 402 0020 _ 01 402 1002 _ a o SHCSM1OX1 5 X30MM Class 10 9 01 150 2054 Model 55T Final Drive service manual SM 55T AA Page 1 Eskridge Inc Olathe KS 913 782 1238 www eskridgeinc com Bearing Carrier Assembly Gear Train Bill of Materials Item Description Part Number Carrier Assembly Tertiary 4 5 1 55T 004 0103 kr Carrier Assembly Secondary 4 46 1 551 005 0105 Carrier Assembly Secondary 6 29 1 5
9. t while holding one hand on top of the piston 85 The air will force the piston out of the spindle Inspect piston O rings 84A 84B 84C 84D for signs of abrasion extrusion or other damage and replace if necessary If replacing piston O rings be sure O rings 84B amp 84C are nearest each other with backup rings 84A amp 84D to the outside The flat side of back up ring must be placed next to piston groove wall with the curved side contacting the O ring Friction disks 82 separator plates 83 and thrust washer 81 can be removed Note the arrangement of the friction disks and separator plates Some final drives will also have a spacer not shown and its position also needs recorded Friction disks 82 should be replaced when overall stack height of the friction pack spacers not shown friction disks 82 and separator plates 83 is less than 1 52 in If the fric tion disks are replaced soak the new friction disks in gear box oil prior to installation Clean and inspect the piston 85 bores for scratches or abra sions and replace if necessary Reassembly Install thrust washer 81 friction disk 82 then separator plate 83 Continue to install friction disks 82 then separator plates 83 until the complete friction pack is installed There must always be a friction disc 82 above and below each separator plate 83 Some units will have a spacer Not Shown If the friction pack was provided with a space
10. through the internal bearing 20B Use a gear puller to remove the outer bearing cone 20A from the spindle 2 If reusing the bearing cone do not pull on or damage the bearing cage Clean and inspect inner and outer bearing cups and cones 20A 20B If cups are damaged they must be replaced drive them out using a brass hammer and drift utilizing the bearing knock out notches in the bearing carrier If a bearing cup or cone is damaged replaced both components The metal face seal 16A is design to automatically compen sate for wear The sealing band of a new seal is located at the outer perimeter of the seal surface As seal wear occurs this contact band will widen and migrate towards the center of the seal By measuring the distance from the contact band to the inner diameter an estimate of seal life remaining can be obtained If the distance between the contact band and seal surface internal diameter is less than 50 if the overall sealing surface width replace seal Below is an illustration showing the sealing band location for a new and partially worn seal 3a 3b 3c Partially Worn Seal Reassembly Place spindle 1 on table with splined side up Press outer bearing cone 20A onto spindle by pressing on bearing cones inner race Apply a thin layer of lithium or general purpose bearing grease to the roller contact surfaces on the bearing cups Wipe the face of each half of the metal face seal 16A using a lint
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