Rear

The rear wheel bearings used in the All Wheel Drive system are similar to the bearings used in the front wheels. The bearings are permanently sealed and require no maintenance. The bearing and hub are serviced as an assembly. Defective or damaged rear wheel bearings produce a vibration or growl noise. The noise will continue after the transmission is shifted to NEUTRAL and the vehicle is coasting. To tell the difference between rear wheel bearing noise and differential gear noise, road test the vehicle on a smooth road. With traffic permitting, swerve the vehicle sharply right-to-left. If the noise is caused by a rear wheel bearing, it will usually increase in loudness when the vehicle is swerved.

REMOVAL
1. Raise vehicle on hoist.
2. Remove wheel and tire assembly.

WARNING: DUST INSIDE OF BRAKE DRUM MAY CONTAIN ASBESTOS FIBERS. BREATHING ASBESTOS FIBERS CAN CAUSE SERIOUS BODILY HARM, SUCH AS ASBESTOSIS OR CANCER. EXTREME CARE SHOULD BE TAKEN WHILE SERVICING BRAKE ASSEMBLIES OR COMPONENTS.






3. Remove brake drum.






4. Remove cotter pin, nut lock, spring washer and hub nut.






5. Remove half shaft flange retaining bolts.






6. The half shaft is spring loaded. Compress inner half shaft joint slightly and pull downward to clear rear carrier output shaft. Then pull half shaft assembly inboard to remove.

CAUTION: The half shaft, when installed, acts as a bolt and secures the hub/bearing assembly. If the vehicle is to be supported or moved on its wheels, install and torque a bolt through the hub. This will insure that the hub/bearing assembly cannot loosen.







7. Remove wheel bearing mounting bolts.






8. Remove wheel bearing and hub assembly.
9. Replacement of the grease seal is recommended whenever this service is performed.

INSTALLATION
1. Install new hub and bearing assembly and tighten screws in a criss-cross pattern to 130 Nm (96 ft.lbs.).

CAUTION: Knuckle and bearing mounting surfaces must be smooth and completely free of foreign material or nicks.

2. Use special tool No. 6536-A to install seal if seal replacement is required.

CAUTION: During any service procedures where knuckle and half shaft are separated, thoroughly clean seal and wear sleeve and lubricate both components.

3. Lubricate the full circumference of the seal (and wear sleeve) with Multi-Purpose Lubricant.
4. Install washer and hub nut after cleaning foreign matter from threads.
5. With brakes applied, tighten nut to 244 Nm (180 ft.lbs.).
6. Install spring washer, nut lock and new cotter pin. Wrap cotter pin prongs tightly around nut lock.
7. Install wheel and tire assembly. Tighten wheel nuts to 115 Nm (85 ft.lbs.).