alignment, how to adjust caster?

Good afternoon,

I attached a picture for you of the upper control arm. The 2 bolts that hold the arm to the frame have shims between the frame and the arm.

That is how the caster is adjusted.

Roy

Look at the upper control arm where it is mounted to the frame. To adjust camber and caster you use the two mounting bolts and the shims that go between the A-Arm pivot and the frame. If you remove a shim at the front you move the arm as shown and change the caster. The problem is that because of the way it is adjusted you need to juggle the adjustments. Change the caster and you need to check camber and toe, change the camber and you will need to check the toe.
Be sure you check the ride height first as it can change all three dimensions.