Suspension Ball Joint Replacement
How are ball joint issues diagnosed?
To diagnose a worn ball joint, a shop will raise the vehicle on a hoist and then grasp the tire at the top and bottom and rock the wheel back and forth. A worn ball joint will present a clunking sound or sensation when this test is performed.
The technician will also look for a torn or leaking boot on the ball joint. A worn ball joint may also be suspected if the tires are showing signs of unusual wear on the inside or outside edges.
How is a ball joint replaced?
To replace a ball joint, with the car lifted, the technician will first remove the front wheel. Then, the ball joint is disconnected from the control arm and the steering knuckle, the suspension is separated to allow the ball joint to come free, and the new part is installed.
Some vehicles require that the steering knuckle be disconnected from the strut in order to get to the retaining nut on one side of the ball joint. Either way, the tension between components in the suspension may make this process difficult.
