Front Upper Arm Replacement

Front Upper Arm Replacement

Special Tools Required

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

1. Raise and support the vehicle Service and Repair.

2. Remove the front wheel.

3. Remove the front damper/spring.

4. Remove the wheel speed sensor bracket (A) from the upper arm (B).

NOTE: Use a new wheel speed sensor bracket during reassembly.






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

NOTE: During installation, install a new lock pin as shown after tightening the 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 upper arm mounting bolts (A), then remove the upper arm (B).

NOTE: Use the new upper arm mounting bolts during reassembly.






8. Install the upper arm by inserting a rod (A) of appropriate size (O.D. 6 mm/L: 300 mm) into the positioning holes (B), and place the upper arm (C) on the rod to position it before tightening the upper arm mounting bolts.





9. Install the remaining parts in the reverse order of removal, and note these items:

- First install all 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 it to the specified torque. Do not place the jack against the ball joint pin of the knuckle.
- Be careful not to damage the ball joint boot when installing the knuckle.
- Before connecting the ball joint to the knuckle, degrease the threaded section and the tapered portion of the ball joint pin, the knuckle connecting hole, and the threaded section and the mating surface 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 and the inside of the wheel.
- Check the front wheel alignment, and adjust it if necessary Service and Repair.