Rear Axle Hub, Bearing, Cup, and/or Seal Replacement
Rear Axle Hub, Bearing, Cup, and/or Seal Replacement
Special Tools
* J 2222-C - Wheel Bearing Nut Wrench
* J 8092 - Universal Driver Handle - 3/4 x 10 inch
* J 24426 - Outer Wheel Bearing Race Installer
* J 24427 - Inner Wheel Bearing Race Installer
* J 44419 - Hub Bearing Installer
* J 44420 - Differential Bearing Installer
For equivalent regional tools, refer to Special Tools (Rear Suspension).
Removal Procedure
Note:
* The wheel speed sensor ring is NOT serviced separately. The hub and wheel speed senor ring are serviced as an assembly.
* The rear axle hub seal must be replaced anytime the rear axle hub assembly is removed from the axle housing.
* The wheel studs are serviced separately from the rear axle hub.
1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle (Service and Repair) Lifting and Jacking the Vehicle.
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation (Service and Repair) Tire and Wheel Removal and Installation.
Note: In the following service procedure, it is not necessary to remove the brake caliper from the bracket.
3. Remove the brake caliper bracket. Refer to Rear Brake Caliper Bracket Replacement (JD9) (Rear Brake Caliper Bracket Replacement (JD9))Rear Brake Caliper Bracket Replacement (JH6, JH7) (Rear Brake Caliper Bracket Replacement (JH6, JH7)) Rear Brake Caliper Bracket Replacement.
4. Remove the rear axle shaft. Refer to Rear Axle Shaft and/or Gasket Replacement (Rear Axle Shaft and/or Gasket Replacement) Rear Axle Shaft and/or Gasket Replacement.
5. Remove the rear axle nut retaining ring.
6. Remove the rear wheel bearing adjuster key.
7. Using the J 2222-C - wrench , remove the rear wheel bearing adjuster nut.
Note: If the oil seal remains on the axle hub, remove the seal using a suitable seal removal tool.
8. Remove the rear axle hub from the axle housing.
9. Remove the rear brake rotor, if necessary. Refer to Rear Brake Rotor Replacement (JD9) (Rear Brake Rotor Replacement (JD9))Rear Brake Rotor Replacement (JH6) (Rear Brake Rotor Replacement (JH6))Rear Brake Rotor Replacement (JH7) (Rear Brake Rotor Replacement (JH7)) Rear Brake Rotor Replacement.
10. Using a suitable seal removal tool, remove the oil seal from the wheel hub.
11. Remove the inner hub bearing.
12. Using a brass drift and a hammer, remove the inner hub bearing cup.
13. Remove the retaining ring from the wheel hub.
14. Using the J 24426 - installer (2) and the J 8092 - handle (1), remove the outer hub bearing and bearing cup.
15. For those vehicles equipped with RPO code JH6, use the J 45270 (1) to remove the wheel studs (2).
16. For those vehicles equipped with RPO code JH7, use a hydraulic press to remove the wheel studs.
17. Remove the rear brake disc from the rear axle hub.
Installation Procedure
1. For vehicles equipped RPO code JH7, position the brake rotor on the rear axle hub.
2. Position the wheel stud in the rear axle hub.
3. Using washers and a wheel nut, tighten the wheel nut until the wheel stud is fully seated in the rear axle hub.
4. Remove the lug nut and the washers.
5. Lubricate the following with a light coat of high melting point EP bearing lubricant:
* The outer wheel bearing
* The inner wheel bearing
* The outer wheel bearing cup
* The inner wheel bearing cup
* The axle hub spindle
6. Install the outer bearing into the rear axle hub.
Note: Drive the outer bearing cup into the wheel hub until it is just past the retaining ring groove. Do not bottom out the bearing assembly in the bore.
7. Using the J 44419 - installer (2) and the J 8092 - handle (1), install the outer bearing cup into the rear axle hub.
Note: Ensure that the retaining ring is fully and evenly seated in the groove.
8. Install the retaining ring into the groove.
Note: Ensure that the outer bearing assembly rotates freely in the hub
9. Using the J 24426 - installer (2) and the J 8092 - handle (1), turn the rear axle hub over and seat the outer bearing assembly against the retaining ring.
10. Turn the rear axle hub over and install the inner bearing cup.
11. Using the J 24427 - installer (2) and the J 8092 - handle (1), install the inner bearing cup into the wheel hub.
12. Install the inner bearing.
Note: Ensure the seal is fully seated in the hub bore.
13. Using the J 44420 - installer (2) and the J 8092 - handle (1), install the new oil seal.
14. Apply a light coat of high melting point EP bearing lubricant to the axle housing spindle.
Note: If the rear axle hub assembly does not fully seat itself onto the axle shaft spindle and is removed, the rear axle hub seal must be replaced.
15. Install the rear axle hub.
Note: Install the rear wheel bearing adjuster nut by hand.
16. Using the J 2222-C - wrench , adjust the rear wheel bearings. Refer to Wheel Bearing Adjustment (Wheel Bearing Adjustment) Wheel Bearing Adjustment
17. Install the rear axle shaft. Refer to Rear Axle Shaft and/or Gasket Replacement (Rear Axle Shaft and/or Gasket Replacement) Rear Axle Shaft and/or Gasket Replacement.
18. Install the brake caliper bracket. Refer to Rear Brake Caliper Bracket Replacement (JD9) (Rear Brake Caliper Bracket Replacement (JD9))Rear Brake Caliper Bracket Replacement (JH6, JH7) (Rear Brake Caliper Bracket Replacement (JH6, JH7)) Rear Brake Caliper Bracket Replacement.
19. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation (Service and Repair) Tire and Wheel Removal and Installation.
20. Inspect and add axle lubricant to the axle housing, if necessary. Refer to Rear Axle Lubricant Level Inspection (8.6, 9.5 LD Axle) (Rear Axle Lubricant Level Inspection (8.6, 9.5 LD Axle))Rear Axle Lubricant Level Inspection (10.5 Inch Axle) (Rear Axle Lubricant Level Inspection (10.5 Inch Axle))Rear Axle Lubricant Level Inspection (11.5 Inch Axle) (Rear Axle Lubricant Level Inspection (11.5 Inch Axle)) Rear Axle Lubricant Level Inspection.
21. Remove the supports and lower the vehicle.