Rear Knuckle: Service and Repair

Rear Knuckle/Hub Bearing Unit Replacement

Exploded View





Special Tools Required

- Ball Joint Thread Protector, 12 mm 07AAF-SDAA100
- Ball Joint Remover, 32 mm 07MAC-SL0A102

Hub Bearing Unit Replacement

1. Raise the vehicle Service and Repair.

2. Remove the wheel nuts (A) and the rear wheel.






3. Remove the brake caliper bracket mounting bolts (A), then remove the caliper assembly (B) from the knuckle. To prevent damage to the caliper assembly or the brake hose, use a short piece of wire to hang the caliper from the undercarriage. Do not twist the brake hose excessively.






4. Remove the two washers (A).

NOTE: During installation, make sure the washers are installed between the brake caliper bracket and the knuckle.





5. Release the parking brake lever fully, and remove the rear brake disc/drum Rear Brake Disc Replacement.

6. Remove the hub bearing unit (A) and the O-ring (B).





7. Check the hub bearing unit for damage and cracks.

8. Install the hub bearing unit in the reverse order of removal, and note these items:

- Use a new O-ring on reassembly.
- Before installing the brake disc/drum, clean the mating surfaces of the hub bearing unit and the brake disc/drum.
- Before installing the wheel, clean the mating surfaces of the brake disc/drum and the inside of the wheel.

9. Check the wheel alignment, and adjust it if necessary Service and Repair.

Knuckle Replacement

1. Remove the hub bearing unit.

2. Remove the brake hose bracket mounting bolts (A) from the knuckle.





3. Remove the flange nuts (B), then remove the backing plate (C) with the parking brake shoe assembly.

4. Remove the wheel speed sensor (A) and the sensor harness (B) from the knuckle (C). Do not disconnect the wheel speed sensor connector.






5. Remove the lock pin (A) from the upper arm ball joint, then remove the castle nut (B).

NOTE: During installation, install the lock pin as shown after tightening the new castle nut.





6. Disconnect the upper arm ball joint from the knuckle using the ball joint thread protector and the ball joint remover Ball Joint Removal.

7. Remove the wheel speed sensor harness mounting bolt (B) from lower arm A.






8. Remove the lower arm A mounting bolt (A).

NOTE: Use the new mounting bolt during reassembly.





9. Remove and discard the washer (B) and the lower arm mounting self-locking nut (C).

NOTE: Use a new self-locking nut and a new washer during reassembly.

10. Remove the self-locking nuts (A), and separate the knuckle from the trailing arm (B).

NOTE: Use new self-locking nuts during reassembly.






11. Place a floor jack under lower arm B, and remove the self-locking nut (A), the washer (C), and the flange bolt (D).

NOTE: Use the new flange bolt and a new self-locking nut during reassembly.





12. Install the knuckle in the reverse order of removal, and note these items:

- First install all of the components, and lightly tighten the bolts and the nuts, then raise the suspension to load it with the vehicle's weight before fully tightening to the specified torque.
- Be careful not to damage the ball joint boot when connecting the knuckle.
- Use a new washer, when reinstalling lower arm A.
- Before connecting the upper arm ball joint to the knuckle, degrease the threaded section and the tapered portion of the ball joint pin, the ball joint connecting hole, the threaded section and the mating surfaces of the castle nut.
- Torque the castle nut to the lower torque specification, then tighten it only far enough to align the slot with the ball joint pin hole. Do not align the castle nut by loosening it.
- Before installing the wheel, clean the mating surfaces on the brake disc/drum and the inside of the wheel.

13. Check the wheel alignment, and adjust it if necessary Service and Repair.