Upper Control Arm
INSPECTION - UPPER CONTROL ARMInspect the upper control arm for the following:
- Inspect the arm for signs of damage. If an upper lower control arm shows any sign of damage, inspect the control arm for bending and any other type of distortion, including cracking.
- Inspect both control arm isolator bushings for severe deterioration.
- Inspect the ball joint per the inspection procedure. Refer to Ball Joint, Testing and Inspection.
Testing and Inspection
- Inspect the ball joint grease seal for cuts and splits.
The isolator bushings are the only serviceable components of the upper control arm. If any other part of the control arm fails inspection, the complete lower control arm will require replacement. The lower control arm, ball joint and ball joint grease seal are all serviced as one assembly.