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Front Upper

Upper Control Arm Replacement

- Tools Required
- J 42188 Ball Joint Separator

Removal Procedure





1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Remove the tire and wheel assembly.
3. Disconnect the real time damping (RTD) sensor link.
4. Support the lower control arm with a jackstand.





5. Loosen the ball joint stud nut but do not remove the nut.
6. Using tool J 42188 separate the upper ball joint stud from the upper control arm.
7. Remove tool J 42188 from the ball joint stud. Remove the ball joint stud nut from the ball joint stud.

Important: The upper control arm shims will have an effect on the camber and the caster. Make sure to use an equal thickness of shims on both sides of each individual upper control arm bushing.





8. Remove the upper control arm bolts and shims. Note the number and position of the shims for installation purposes.
9. Remove the upper control arm from the vehicle.

Installation Procedure





1. Install the upper control arm to the vehicle.

Important: The upper control arm shims will have an effect on the camber and the caster. Make sure to use an equal thickness of shims on both sides of each individual upper control arm bushing.

2. Install the upper control arm shims.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the upper control arm mounting bolts to the upper control arm and frame rail.
- Tighten the upper control arm mounting bolts to 65 Nm (48 ft. lbs.).





4. Install the upper ball joint stud into the upper control arm. It will be necessary to use an alien wrench to keep the ball joint stud from spinning while tightening the ball joint stud nut.
- Tighten
4.1. Tighten the upper control arm ball joint stud nut to 20 Nm (15 ft. lbs.) to seat the ball joint stud.
4.2. Turn the ball joint nut an additional 250 degrees.
4.3. Check the ball joint nut for a minimum final torque of 55 Nm (41 ft. lbs.).





5. Connect the real time damping (RTD) sensor link.
6. Remove the jackstand.
7. Install the tire and wheel assembly.
8. Lower the vehicle.