DeVille V8-4.6L VIN Y (1998)
Ball Joint: Specifications
Wear Limit
INSPECTION
Ball joints must be replaced if any looseness is detected in the joint or the ball joint seal is cut. In order to inspect the ball joints, raise the front of the
vehicle by allowing the front suspension to hang free. Grasp the tire at the top and bottom and move the top of the tire in an in-and-out motion. Check
the ball joint for any horizontal movement of the knuckle relative to the control arm. If the ball stud is disconnected from the knuckle and any
looseness is detected, or if the ball stud can be twisted in its socket using finger pressure, replace the ball joint. Ball stud tightness in the knuckle boss
should also be checked when inspecting the ball joint. This may be done by shaking the wheel and feeling for movement of the stud end or castellated
nut at the knuckle boss. Checking the fastener torque at the castellated nut is an alternative method of inspecting for wear. A loose nut can indicate a
bent stud or an opened up hole in the knuckle boss. Worn or damaged ball joints and knuckles must be replaced.
