See Figure 1
- Support the weight of the control arm at the wheel hub.
- Measure the distance between the tip of the ball joint stud and the grease fitting below the ball joint.
- Move the support to the control arm and allow the hub and drum to hang free. Measure the distance again. If the variation between the two measurements exceeds 3 / 32 in., the ball joint should be replaced.
REMOVAL & INSTALLATION
See Figures 2 and 3
- Raise and support the truck with jackstands. Support the lower control arm with a floor jack.
- Remove the tire and wheel.
- Remove the lower stud cotter pin and loosen, but do not remove, the stud nut.
- Loosen the ball joint with the tool illustrated or its equivalent. It may be necessary to remove the brake caliper and wire it to the frame to gain enough clearance.
- When the stud is loose, remove the tool and ball stud nut.
- Install a spring compressor on the coil spring for safety.
- Pull the brake disc and knuckle assembly up and off the ball stud and support the upper arm with a block of wood.
- Remove the ball joint from the control arm with a ball joint fork or another suitable tool.