768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Caterpillar


Rear Wheel Bearings And Duo-Cone Seals

Usage:

Remove Rear Wheel Bearings And Duo-Cone Seals

start by:

a) remove rear wheels

b) remove final drive ring gear

1. Put tooling (A) in position under the wheel as shown. Remove the wire (1) from the bolts that hold the final drive hub on the wheel spindle.

2. Install tooling (B) on final drive hub (4). Remove eight bolts (2) and retainer (3). Remove the hub from the wheel. The weight of the hub is 80 lb. (36 kg).

3. Use a lift truck as a support for the wheel assembly as shown. Remove wheel bearing outer cone (5) from the axle housing (6).

4. Remove wheel assembly (7). The weight of the wheel assembly is 800 lb. (365 kg).

5. Remove wheel bearing inner cone (8) from the axle housing. Remove retainer (9) from the axle housing.

6. Remove Duo-Cone seal (10) from retainer (9). Remove O-ring seal (11) from the retainer.

7. Remove Duo-Cone seal (12) from the wheel.

8. Remove inner bearing cup (13) from the wheel.

9. Remove outer bearing cup (14) from the wheel.

10. Remove Duo-Cone seals (15) and (16) from the brake assembly.

Install Rear Wheel Bearings And Duo-Cone Seals

NOTE: Make sure all surfaces of the Duo-Cone seal are clean and dry. Put a thin layer of clean oil on the metal contact surfaces of the Duo-Cone seal at assembly.

1. Use tool (A) to install the smaller Duo-Cone seal on the brake assembly.

2. Use tool (B) to install the larger Duo-Cone seal on the brake assembly.

3. Install O-ring seal (1) on retainer (2). Use tool (A) to install the Duo-Cone seal on the retainer.

4. Install retainer assembly (2) and bearing cone (4) on axle housing (3).

5. Lower the temperature of bearing cups (5) and (6). Install the bearing cups in the wheel until the bearing cups are against the shoulders in the wheel.

6. Use tool (B) to install the Duo-Cone seal on the wheel.

7. Use a lift truck to put the wheel assembly in position on the axle housing. Install wheel bearing outer cone (7). The weight of the wheel is 800 lb. (365 kg).

8. Install tooling (D) as a support for the wheel assembly. Use tool (C) to put hub (8) in position on the axle housing.

9. Make a measurement for the wheel bearing pre-load adjustment as follows:

a) Make a measurement of the thickness of retainers (9).

b) Install retainer (9) on the axle housing with three bolts (10) that have spaces between them as even as possible as shown. Tighten the bolts evenly to a torque of 50 lb. ft. (70 N·m). Turn the wheel and tighten the bolts again to a torque of 50 lb. ft. (70 N·m).

c) Use a depth micrometer as shown to measure the distance from the outside of retainer (9) to the end of the axle housing.

d) Find the difference between the measurements in Step a and Step c. This difference is the distance between the end of the axle housing and the inside surface of the retainer.

e) The thickness of shims (11) must be .004 in. (0.10 mm) thicker than the distance found in Step d.

10. Remove the bolts and retainer (9). Install the correct thickness of shims (11) and the retainer with eight bolts.


NOTICE

The lockwire must not go over the heads of bolts (10).


11. Install lockwire (12) through the heads of bolts (10).

end by:

a) install final drive ring gear.

b) install rear wheels

Caterpillar Information System:

768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Final Drive Ring Gear
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Final Drive
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Rear Wheels
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Axle
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Body Support (FT1437)
768C TRACTOR & 769C TRUCK POWER SHIFT TRANSMISSION Testing and Adjusting
768C TRACTOR & 769C TRUCK POWER TRAIN Testing And Adjusting
768C TRACTOR & 769C TRUCK POWER TRAIN Systems Operation
768C TRACTOR & 769C TRUCK POWER TRAIN Adjustment Of The Rear Wheel Bearings
768C TRACTOR & 769C TRUCK POWER TRAIN Rear Wheel Group
768C TRACTOR & 769C TRUCK POWER TRAIN Tire Valve (4D2004)
768C TRACTOR & 769C TRUCK POWER TRAIN Rear Axle Housing
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Rear Axle Housing
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Transmission And Torque Converter Charging Pump
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Transmission And Torque Converter Scavenge Pump
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Torque Converter Inlet Relief Valve
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Torque Converter Outlet Relief Valve
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Drive Shaft (Front)
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Drive Shaft (Rear)
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Torque Converter
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Transmission Governor And Drive
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Transmission Governor
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Sequence And Pressure Control Valve For Lock-Up Clutch
768C TRACTOR & 769C TRUCK POWER TRAIN DISASSEMBLY & ASSEMBLY Hydraulic Shift Cylinder And Solenoids
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