K 2500 Truck 4WD V8-379 6.2L DSL VIN C FI (1989)
Ball Joint: Testing and Inspection
Upper
1.
Wipe ball joints clean and check seals for damage. If seals are damaged, replace ball joint.
2.
Adjust wheel bearings as outlined in ADJUSTMENT PROCEDURES/WHEEL BEARINGS ADJUST.
3.
Check ball joint for vertical looseness as follows:
a. With vehicle on jack stands, place dial indicator against spindle to show vertical movement.
b. Pry between lower control arm and outer race while reading dial indicator.
c. If dial indicator reading is more than .08 inch, replace ball joint.
