BLADE 5172542 - Caterpillar

Power Train with engine mounted Pump Drive 1. Engine2. Flywheel Cover3. Engine Adapter4. Pump Drive5. Hydraulic PumpsDisassembly
1. Drain oil from pump drive gear box by removing allen head pipe plug from bottom of main case.2. Remove hydraulic pumps by removing capscrews, or nuts from studs. Remove pumps straight away from pump drive.3. Remove pump drive from engine by removing capscrews, holding engine adapter housing to flywheel cover of engine. Remove pump drive straight away from engine. a. Clutch driven models: Remove nut and starwasher holding clutch bearing lubrication line to engine adapter. The clutch and drive shaft assembly may tend to remain with engine. Should this occur, move clutch throwout handle in a manner which will allow clutch sliding sleeve trunions to disengage from throwout fork.b. Flex plate driven models: The drive shaft will remain with either the drive plate or the pump drive box. Be prepared to retrieve drive shaft from either.
Fig. 4
Pump drive gear box should be positioned so that the hydraulic pump adapter pads are facing up. Remove place bolts or nuts from studs and lift adapter pads up from gear box.
Fig. 5
Lift driven gears and their bearings from pump drive box. This can be done by hand since the bearings are slip fitted to the housing and pump adapter bores. Bearings are press fitted to gear hubs. It may be necessary to tip gear slightly to clear pinion gear bearing pocket.
Fig. 6
After all driven gears and their bearings have been removed, position gear box so that the engine adapter (clutch housing or independent input flange) is facing up. Remove place bolts and lift engine adapter up from gear box. Lift pinion gear and bearings from pump drive box.
Fig. 7
Should replacement of oil seal be required, drive oil seal toward engine side of engine adapter. Note: Drive in direction of arrow.
Fig. 8
To remove bearings from gear hubs, use gear puller or Arbor Press.Reassembly
For assembly of models 28000, 59000, and 61000 pump drives, use reverse procedure of figures 1 through 8. Plastic cord used for gasket material under pump adapter plates and input housing is not reusable. Replace with new material when reassembling. See drawing number 4028802 for installation of cord gasket. Place bolts should not be re-used. Clean the old loctite out of the bolt hole threads. Install new place bolts with loctite 262 on models 28000 and 59000, the engine adapter, clutch housing and pump pad. Place bolts are torqued to 200 ft. lbs. (271 nm). If studs are used in pump drive pad, torque studs to 150 ft. lbs. (203 nm). The 61000 pump drive engine adapter, clutch housing and pump drive pads are torqued to 150 ft. lbs. (203 nm). Replacement of oil sealInstall oil seal from engine side of engine adapter. The rubber lip of the oil seal must point toward the inside of pump drive gear box. Drive in direction of arrow.
Drive plate modelsWhen installing drive plate on flywheel, be sure the long end of the drive plate hub is