Lower

1. Check ball stud tightness in the knuckle boss when inspecting the ball stud.
2. Check ball stud tightness in the following manner:
- Shake the wheel while feeling for movement of the stud end at the knuckle boss
- Shake the wheel while feeling for a loose prevailing torque nut at the knuckle boss
3. A loose prevailing torque nut may indicate the following:
- A bent stud in the knuckle boss
- An opened-up hole in the knuckle boss
4. Replace worn ball studs.
5. Replace damaged ball studs.
6. Replace worn knuckles.
7. Replace damaged knuckles.