Service Procedure
A. Inspect the Rear Wheel Hub and Bearing Date Code1. Raise the vehicle on an appropriate hoist.
2. Remove the right rear tire/wheel assembly.
3. Clean the inside of the wheel centering hub and inspect the date code (Figure 1):
> If the date code is not GTN11A, the right rear wheel bearing does not need to be replaced. Install the wheel assembly, tighten the lug nuts to 100 ft.lbs. (135 Nm), lower the vehicle from the hoist and return the vehicle to the customer.
> If the date code is GTN11A (or is not legible), replace the right rear wheel bearing. Continue with Section B. Replace the Right Rear Wheel Hub and Bearing.
B. Replace the Right Rear Wheel Hub and Bearing
NOTE:
The following procedure is required if the right rear wheel hub and bearing requires replacement per the inspection in Section "A."
1. Disconnect the negative battery cable.
2. Remove and save the section of exhaust heat shield above exhaust pipe that covers the wheel speed sensor wiring connector (Figure 2).
3. Disconnect the vehicle wiring harness from the wheel speed sensor wiring connector.
4. Remove the wheel speed sensor wiring harness from the routing clips along the underbody of the vehicle (Figure 3).
5. Remove the wheel speed sensor wiring harness from the routing clips along the brake flex hose (Figure 3).
6. Remove the wheel speed sensor wiring harness routing clip from the backside of the rear axle flange (Figure 3).
7. Remove and save the two bolts securing the disc brake caliper and adapter bracket to the axle (Figure 4).
8. Remove the disc brake caliper and adapter bracket from the axle
as an assembly. Hang the caliper assembly out of way using wire or a bungee cord (Figure 5).
CAUTION:
Use care not to overextend the rubber flex hose.
9. If equipped, remove and discard any brake rotor retaining clips and then slide the brake rotor off the hub and bearing assembly.
10. Remove and save the four mounting bolts securing the hub
and bearing assembly to the axle.
11. Remove the hub and bearing assembly with the wheel speed sensor and wire attached.
12. Separate the brake shield from the hub and bearing assembly.
13. Using a Scotch-Brite pad or equivalent, clean the axle mounting surface and the brake shield mounting surfaces.
CAUTION:
The hub and bearing mounting surfaces on the axle and brake shield must be smooth and completely free of foreign material and/or nicks
prior to installing the hub and bearing assembly.
14. Position the original brake shield on the new hub and bearing assembly.
15. Route the wheel speed sensor wiring harness through the access hole in the brake shield.
16. Install the new hub and bearing assembly with the wheel speed sensor attached and brake shield squarely onto the end of axle.
17. Install the four mounting bolts securing the hub and bearing assembly to the axle. Tighten the four mounting bolts to 41 ft.lbs. (55 Nm).
18. Install the brake rotor over the hub and bearing assembly (Figure 7).
19. Install the disc brake caliper and adapter bracket over the axle and rotor as an assembly.
20. Install the two bolts securing the disc brake caliper adapter bracket to the axle (Figure 4). Tighten the mounting bolts to 74 ft. lbs. (100 Nm).
21. Install the wheel speed sensor wiring harness routing clip into the hole in the backside of the rear axle flange (Figure 3).
22. Install the wheel speed sensor wiring harness into the routing clips along the brake flex hose (Figure 3).
23. Install the wheel speed sensor wiring harness into the routing clips along the underbody of the vehicle (Figure 3).
24. Connect the vehicle wiring harness connector to the wheel speed sensor wiring connector.
25. Install the exhaust heat shield located above the exhaust pipe (Figure 2).
26. Partially lower the vehicle from the hoist.
27. Install the tire/wheel assembly. Tighten the wheel mounting nuts to 100 ft. lbs. (135 Nm).
28. Lower the vehicle from the hoist.
29. Connect the negative battery cable.
30. Pump the brake pedal several times to ensure the vehicle has a firm brake pedal before moving the vehicle.
31. Return the vehicle to the customer.