Upper

Special Tool(s):

Removal

1. WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the RH kick panel area. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.

Raise and support the vehicle.

2. CAUTION: Do not use heat to loosen a seized wheel nut. Heat can damage the wheel and wheel hearings. Remove the wheel and tire assembly.

3. Support the front suspension lower arm.
- Position a jack under the front suspension lower arm.





4. Mark the position of the camber adjustment cam.





5. Safely reposition the anti-lock sensor wire.
1. Remove the bolt.
2. Safely reposition the anti- lock sensor wire.





6. Remove the upper ball joint castle nut.
1. Remove and discard the cotter pin.
2. Remove the upper ball joint castle nut.





7. Use the Pitman Arm Puller to separate the front suspension upper arm from the front wheel knuckle.

8. Note: Mark the position of the camber adjustment cam.





Remove the front suspension upper arm.
1. Remove the front suspension upper arm nuts.
2. Remove the front suspension upper arm pivot bolts.
3. Remove the front suspension upper arm.

Installation

1. Note: Align the marks made during removal.





Install the front suspension upper arm.
1. Position the front suspension upper arm.
2. Install the front suspension upper arm bolts.
3. Install the front suspension upper arm nuts.





2. Install the front suspension arm upper ball joint castle nut.
1. Position the front wheel knuckle.
2. Install the upper ball joint castle nut.
3. Install a new cotter pin.





3. Position the anti-lock sensor wire.
- Install the front brake anti-lock sensor wire bracket bolt.
4. Remove the jack.

5. WARNING: When the wheel is installed, always remove any corrosion, dirt or foreign material that may be present on the mounting surfaces of the wheels or the surfaces of the wheel hub, brake drum or brake disc that contacts the wheel. Installing wheels without proper metal-to-metal contact at the wheel mounting surfaces can cause the wheel nut to loosen and the wheel to come off while the vehicle is in motion, causing loss of control.

WARNING:
- Retighten at 800 km (500 miles) after any wheel change or any time the wheel nuts are loosened.
- Failure to retighten wheel nuts at the mileage specified could allow wheels to come off while the vehicle is in motion, possibly causing loss of vehicle control and collision.

Install the tire and wheel assembly.

6. Note: If equipped with air suspension, reactivate the system by turning on the air suspension switch.

Lower the vehicle.
7. Check the front end alignment.