768C TRACTOR & 769C TRUCK POWER TRAIN Caterpillar


Adjustment Of The Rear Wheel Bearings

Usage:


Typical Example


Typical Example


Typical Example


Typical Example


Typical Example

NOTE: Before adjustment of the rear wheel bearings can be made, the parking brake and the service brake must be released. To release the brake, see the topic TOWING in the Systems Operation, Testing and Adjusting (Air System and Brakes). To release the parking brake, remove the bleed valve from opening (A), marked "P" and connect a manual or electric hydraulic pump to the opening. Operate the pump until the brake is released.


NOTICE

If it becomes necessary to charge the parking brake release circuit with an outside hydraulic source, DO NOT use over 4150 kPa (600 psi). More than 4150 kPa (600 psi) can damage seals and other parts in the circuit.


NOTE: Hand tap or wire brush the threaded holes to remove thread lock or patch material prior to doing Step 1.

NOTE: If the wheel assembly has 5P9118 Self Locking Bolts, do not use them for the bearing preload. Use 0S1625 Bolts to set the bearing preload. Also, use the 0S1625 Bolts for final assembly.

1. Put the retainer, Duo-cone seal, wheel and bearings, and final drive hub in position on the axle housing.

2. Install retainer (1) without shims (7). Use four bolts as near evenly spaced as possible, to hold the retainer.

3. To seat the bearings, turn the wheel several times while tightening the bolts.

4. As the wheel IS TURNED, tighten the bolts to ... 70 N·m (50 lb ft)

5. Use depth micrometer (2) to measure through the threaded holes in the retainer and find the average depth.

6. Use outside micrometer (3) to measure the thickness of the retainer at the threaded holes and find the average thickness.

7. Find the difference between the two average measurements. This difference is the gap between end of the axle housing and the retainer.

8. Remove the retainer. Install shims (7) equal to the average gap found in Step 7 plus ... 0.18 mm (.007 in)

NOTE: Apply 9S3263 Thread Lock to six 0S1625 Bolts before assembly.

9. Install retainer (1) and shims (7). Tighten the bolts that hold the retainer to the axle housing to a torque of ... 250 ± 14 N·m (185 ± 10 lb ft)

NOTE: If micrometers are not available, use the procedure below:

NOTE: Hand tap or wire brush the threaded holes to remove thread lock or patch material prior to doing Step 1.

NOTE: If the wheel assembly has 5P9118 Self Locking Bolts, do not use them for the bearing preload. Use 0S1625 Bolts to set the bearing preload. Also, use the 0S1625 Bolts for final assembly.

1. Put the retainer, Duo-Cone seal, wheel and bearings, and final drive hub in position on the axle housing.

2. Install retainer (1) without shims (7). Use four bolts spaced evenly to hold the retainer.

3. To seat the bearings, turn the wheel several times while tightening the bolts.

4. As the wheel IS TURNED, tightened the bolts to ... 70 N·m (50 lb ft)

5. Install two 1/2 in. - 13 screws (4) with locknuts into the threaded holes in retainer (1). Tighten screws (4) by hand until they are against the end of the axle housing. Tighten the locknuts against the retainer.

6. Remove retainer (1). With a straight edge (5) across the screws, measure distance (A) from the inner face of retainer (1) to the ends of screws (4) with a feeler gauge.

7. Install enough shims (7) between the axle housing and retainer so they are 0.18 mm (.007 in) thicker than distance (A) measured.

NOTE: Apply 9S3263 Thread Lock to six 0S1625 Bolts before assembly.

8. Install retainer (1) and shims (7). Tighten the bolts, that hold the retainer to the axle housing, while turning the wheel to a torque of ... 250 ± 14 N·m (185 ± 10 lb ft)

Caterpillar Information System:

768C TRACTOR & 769C TRUCK POWER TRAIN Rear Wheel Group
768C TRACTOR & 769C TRUCK POWER TRAIN Differential And Bevel Gear Group
768C TRACTOR & 769C TRUCK POWER TRAIN Rear Axle Housing
768C TRACTOR & 769C TRUCK POWER TRAIN Final Drive 6D1520
768C TRACTOR & 769C TRUCK POWER TRAIN Rotary Actuator
768C TRACTOR & 769C TRUCK POWER TRAIN Selector Group 7G1365
768C TRACTOR & 769C TRUCK POWER TRAIN Pressure Control Group 7G1366
768C TRACTOR & 769C TRUCK POWER TRAIN Transmission Hydraulic Control Group 7G1362
768C TRACTOR & 769C TRUCK POWER TRAIN Lockup Clutch And Solenoid Valve Group 6T3722
768C TRACTOR & 769C TRUCK POWER TRAIN Outlet Relief Valve For The Torque Converter 8P1471
768C TRACTOR & 769C TRUCK POWER TRAIN Inlet Relief Valve For The Torque Converter 3P348
768C TRACTOR & 769C TRUCK POWER TRAIN Parking Brake Release Valve
768C TRACTOR & 769C TRUCK POWER TRAIN Rear Wheel Brake Group
768C TRACTOR & 769C TRUCK POWER TRAIN Tire Valve 4D2004
768C TRACTOR & 769C TRUCK POWER TRAIN Pressures And Shift Points For Torque Converter And Transmission
768C TRACTOR & 769C TRUCK POWER TRAIN SYSTEM OPERATION
768C TRACTOR & 769C TRUCK POWER TRAIN Testing And Adjusting
768C TRACTOR & 769C TRUCK POWER TRAIN Body Retaining Pins
768C TRACTOR & 769C TRUCK POWER TRAIN Body Support (FT1437)
768C TRACTOR & 769C TRUCK POWER TRAIN Rear Tires And Rims
768C TRACTOR & 769C TRUCK POWER TRAIN Axles (Rear)
768C TRACTOR & 769C TRUCK POWER TRAIN Final Drives
768C TRACTOR & 769C TRUCK POWER TRAIN Final Drive Ring Gear
768C TRACTOR & 769C TRUCK POWER TRAIN Duo-Cone Floating Seals
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.