Front Caster and Camber Adjustment
- The caster and camber adjustments are made by rotating the offset cam bolt and the cam in the slotted frame bracket in order to reposition the control arm.
- For an accurate reading, do not push or pull on the tires during the alignment process.
- Determine the caster angle (2).
- Determine the positive camber (2) or negative camber (3) angle.
- Remove the pinned adjusting cam insert. Do not reinstall the cam insert.
- Loosen the upper control arm cam adjustment bolts.
- Adjust the caster and the camber angle by turning the cam bolts until the specifications have been met. When the adjustments are complete, hold the cam bolt head in order to ensure the cam bolt position does not change while tightening the nut. Upper Control Arm Replacement (Light Duty)Upper Control Arm Replacement (Heavy Duty)
- Verify that the caster and the camber are still within specifications. Wheel Alignment Specifications
- When the caster and camber are within specifications, adjust the toe. Wheel Alignment - Steering Wheel Angle and/or Front Toe Adjustment
Caster measurements are now relative to ground.
Before adjusting the caster and camber angles, jounce the front bumper 3 times to allow the vehicle to return to normal height. Measure and adjust the caster and the camber with the vehicle at curb height. The front suspension Z dimension is indicated in Trim Heights. Trim Height Inspection
While performing a front end alignment it may be noticed that the upper control arm bracket alignment pin is missing. This pin serves as a pilot for the alignment cam when adjusting the front caster and camber.
If the pin is missing, a 1/4 inch dowel rod or a punch can be utilized as a temporary alignment aid to properly center the cam to the bracket, while making adjustments and torquing the control arm nuts.