Upper

1. Be sure the vehicle rests on a level surface.
2. Raise the vehicle and support it with suitable safety stands. Support the lower control arm with a floor stand or jack as far outboard as possible near the ball joint.

Important:
- The vehicle must be stable and should not rock on the floor stands.
- The upper control arm boot seal must not contact the frame.

3. Wipe the ball joints clean and check the seals for cuts or tears.
- If a seal is cut or torn, the ball joint MUST be replaced.
4. Adjust the front wheel bearings. Refer to "Wheel Bearing Adjustment."
5. Check the ball joints for vertical looseness.
- With the vehicle on the jack stands, place a dial indicator against the spindle to show vertical movement.
- Pry between the lower control arm and the outer race while reading the dial indicator. This will show vertical looseness in the ball joints.
- If the dial indicator reading is more than 2 mm (0.08 inch), replace the ball joint.