Ford Aerostar 1986-1997 Repair Guide

Lower Ball Joint



  1. Position a floor jack under the lower control arm and jack the vehicle up far enough for the tire to clear the ground.
  3. Grasp the lower edge of the tire and move the wheel in and out. While the wheel is being moved, observe the lower spindle jaw and the lower control arm. A 1 / 32 in. (0.8mm) or greater movement between the lower control arm and the lower spindle jaw indicates the lower ball joint must be replaced.
  5. Inspect the rubber bushings at the lower control arm attachment points for wear or looseness. Repair or replace the parts if any damage is found.


The manufacturer recommends that the lower control arm and ball joint should be replaced as an assembly.

The lower ball joint is pressed into the lower control arm. Although Ford recommends replacing the lower arm and ball joint together, the old ball joint can also be pressed out and the new one pressed in. Refer to the lower control arm removal procedures to remove the lower control arm. Once the lower control arm is removed, the ball joint may be pressed out.