Ball Joint - Upper: Description
WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
The upper ball joint is pressed into the upper control arm. The ball joint is a "sealed for life" component and cannot be maintenance lubricated. This ball joint is lubricated for life at the time of assembly. No attempt should be made to ever add any lubrication to this ball joint.
Neither the upper ball joint, nor the seal boot can be serviced as a separate component. The entire upper control arm must be replaced if either are damaged.
The ball joint connection at the knuckle is achieved by an interference fit created by the tapered stud of the ball joint and a tapered hole in the steering knuckle. The ball joint stud is retained in the steering knuckle using a locking nut.