Upper

Upper Control Arm Replacement (4WD)

Removal Procedure





1. Raise the front of the vehicle. Refer to Vehicle Lifting.
^ Support the lower control arm with floor stands.
^ Place floor stands under the lower control arms as far outboard as possible (between spring seats and ball joint) to maintain maximum leverage.
2. Remove the tire and wheel assembly.
3. Unload the torsion bar.
4. Remove the shock absorber.





5. Remove the cotter pin from the upper ball joint stud.
6. Remove the upper ball joint retaining nut.
7. Using a pry bar, placed under the upper control arm and on top of the frame, pry upward.
8. With the aid of a helper, carefully hammer on the steering knuckle in the area of the upper ball joint stud in order to release the stud from the steering knuckle.
9. Remove the upper ball joint from the steering knuckle.





10. Remove the upper control arm retaining nuts.
11. Remove the upper control arm outer cams.
12. Remove the upper control arm bolts.
13. Remove the upper control arm inner cams.
14. Remove the upper control arm from the frame.





15. Remove the upper control arm bumper nut.
16. Remove the upper control arm bumper from the upper control arm.

Installation Procedure





1. Install the upper control arm bumper to the upper control arm.

Notice: Refer to Fastener Notice in Service Precautions.

2. Install the upper control arm bumper retaining nut.
^ Tighten the upper control arm bumper retaining nut to 27 Nm (20 ft. lbs.).





3. Install the upper control arm to the frame.
4. Install the upper control arm inner cams to the upper control arm retaining bolts.

Important: The bolt heads must be opposed inside the bracket.

5. Install the upper control arm retaining bolts to the upper control arm.
6. Install the upper control arm outer cams.

Important: Tighten the nuts with the front suspension loaded.

7. Install the upper control arm retaining nuts.
^ Tighten the upper control arm retaining nuts to 115 Nm (85 ft. lbs.).





8. Install the upper ball joint to the steering knuckle.
9. Install the upper ball joint to the steering knuckle retaining nut.
9.1. Tighten the upper ball joint retaining nut to 83 Nm (61 ft. lbs.).
9.2. Tighten the upper ball joint retaining nut in order to align the cotter pin. Do not tighten the upper ball joint nut more than 1/6 turn.
10. Install a new cotter pin to the upper ball joint retaining nut. Bend the pin ends against the nut.
11. Install the shock absorber.
12. Load the torsion bar.
13. Install the tire and wheel assembly.
14. Lower the vehicle.
15. Check the front wheel alignment.