Caster

Fig. 3 Caster & camber adjusting shim selection chart. 1987-88 Ram 50:

Caster and camber are adjusted together by adding or removing shims from between the upper control arm shaft and crossmember.
1. Check alignment angles following equipment manufacturer's instructions.
2. If caster and/or camber are not within specifications, loosen nuts securing upper control arm shaft to crossmember.
3. Increase or decrease thickness of shims between control arm shaft and crossmember, noting the following:
a. Refer to chart, to select proper shims.
b. Do not use more than 4 shims at one location.
c. Difference in shim thickness between front and rear bolts must not exceed 0.16 inch (4 mm).