Wheel Hub: Service and Repair

Exploded View 2WD:

2WD PICKUP

Removal

1. Block rear wheels, then raise and support vehicle.
2. Remove wheel and tire assembly.
3. Remove caliper.
4. Remove wheel hub and wheel bearing, Fig. 22.
5. Remove cotter pin, adjusting cap and wheel bearing nut.
6. Remove wheel hub and rotor.
7. Separate outer wheel bearing inner race and washer.
8. Separate rotor from hub assembly.
9. Remove inside wheel bearing outer race, grease seal and outside wheel bearing outer race.
10. Remove spindle and arm.

Inspection

Inspect all removed components for excessive wear and/or damage. Replace worn and/or damaged components as required. Lubricate all components using suitable grease.

Installation

Reverse procedure to install. Adjust wheel bearing preload as follows:
1. Tighten wheel bearing locknut to 25-29 ft. lbs.
2. Turn wheel hub several times in both directions to seat wheel bearing correctly.
3. Again tighten tighten bearing locknut to 25-29 ft. lbs.
4. Turn back wheel bearing locknut 45°.
5. Install adjusting cap and a new cotter pin. Align cotter pin slot by loosening nut approximately 15° or less. Do not exceed 15°.
6. Measure wheel bearing preload and axial endplay. Axial endplay should be 0 inch (as measured at the wheel hub bolt). With a new grease installed, preload obtained should be 2.2-6.4 lbs. With a used grease seal installed, preload obtained should be 2.2-5.3 lbs.
7. Repeat steps 1 through 6 until correct bearing preload is obtained.