Diagnosis And Testing - Upper Ball Joint

WARNING: This page is about a different car, the 2016 Dodge Durango. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Positioning Dial Indicator Plunger On Topside Of Upper Ball Joint

Courtesy of CHRYSLER GROUP, LLC

Raise the front of the vehicle. Refer to HOISTING, STANDARD PROCEDURE .
Place safety floor stands under both lower control arms as far outboard as possible. Lower the vehicle to allow the stands to support some or all of the vehicle weight.
Remove the front tires.
Mount a dial indicator (1) solidly to the frame.
NOTE:
The dial indicator plunger must be perpendicular to the machined surface of the ball joint.
Position the dial indicator plunger on the topside of the upper ball joint (5), and then zero the dial indicator.
NOTE:
Use care not to pry or tear the ball joint boot, when checking the free play.
Position a pry bar (3) between the steering knuckle (4) and the upper control arm (2). Pry upwards on the upper control arm.
If the travel exceeds 0.5 mm (0.020 in.), replace the upper control arm. Refer to ARM, UPPER CONTROL, REMOVAL .
If the upper ball joint is within specs reinstall the front tires. Refer to WHEELS, STANDARD PROCEDURE .