Control Arm: Description and Operation

The upper suspension arms bolt to frame rail brackets through the pivot shaft. The upper arm pivot shaft allows for caster and camber adjustment. The pivot shaft uses bushing in the arms to isolates road noise. The lower suspension arms are bolted to the frame and pivot through rubber bushings. The upper and lower ball studs are riveted to the arms and are lubricated for life. The suspension arm travel (jounce or rebound) is limited through the use of jounce bumpers.