Front Upper

Upper Control Arm Replacement

- Tools Required
- J 23742 Ball Joint Separator

Removal Procedure





1. Raise the vehicle. Refer to Vehicle Lifting.

Caution: Floor jack must remain under the lower control arm during removal and installation to retain the lower control arm in position. Failure to do so could result in personal injury.

2. Support the lower control arm with safety stands.
3. Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation.
4. Remove the wheel speed sensor harness bracket retaining bolt and nut.





5. Remove the upper control arm cotter pin and the retaining.





6. Disconnect the steering knuckle from the upper ball joint using J23742.
7. Remove the upper control arm from the steering knuckle.
8. Support the steering knuckle in order to prevent the knuckle weight from damaging the brake hose.

Important: Note the location of the alignment shims. Replace the shims in the same location from which these were removed.





9. Remove the upper control arm mounting nuts and the shims.
10. Remove the upper control arm mounting bolts. Lift the upper control arm in order to gain access to the bolts.
11. Remove the upper control arm.

Installation Procedure





1. Install the upper control arm to the frame. Line up the holes in the shaft with the holes in the frame.

Notice: Refer to Fastener Notice in Service Precautions.

Important: Mount the shims exactly as they were when removed.

2. Install the upper control arm shims, the mounting bolts, and the mounting nuts. Lift the upper control in order to gain access.
2.1. Tighten the upper control arm mounting nut on the thinner shim pack first.
2.2. Tighten the upper control arm mounting nuts to 110 Nm (81 ft. lbs.).





3. Connect the upper ball joint to the steering knuckle. Make sure the ball joint is fully seated into the steering knuckle.
4. Install the upper control arm retaining nut.
- Tighten the upper control arm retaining nut to 83 Nm (61 ft. lbs.).
5. Install a new cotter pin.
- Tighten the nut up to an additions 1/6 amount in order to insert the cotter pin through the upper ball joint stud. Bend the cotter pin ends flat against the nut.
6. Install the wheel speed sensor harness bracket retaining nut and bolt.
- Tighten the wheel speed sensor harness bracket retaining nut to 16 Nm (12 ft. lbs.).
7. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation.
8. Remove the safety stand from the lower control arm.
9. Lower the vehicle.
10. Check the front wheel alignment. Refer to Measuring Wheel Alignment.