[old_master]

Three terms in wheel alignment that can affect pull or drift not mentioned are:

Thrust angle is the direction the rear wheels are headed in relation to the centerline of the vehicle. If the rear wheels are headed to the right, the vehicle will drift to the left, and vice versa.

Cross camber and cross caster: They are the difference in the adjustments from left side to right side. As a rule of thumb, the tolerance is .5 degrees. Caster will affect pull approximately twice what camber will. For example: .5 degrees of camber will cause the same amount of pull or drift that .25 degrees of caster will. If cross camber is .5 degrees favoring the left and cross caster is .5 degrees favoring the left, technically the vehicle is within specs BUT, the vehicle will pull like a big dog to the left if you let go of the steering wheel. This is where an experienced alignment technician is a must. He needs to know how to deal with cross camber and cross caster and how to compensate for it, while also paying attention to thrust angle.

Your specs:
Cross caster is .18 degrees and will cause a slight drift to the right.

Cross camber is .54 degrees which will cause a stronger drift to the left that will more than cancel out the cross caster. Bottom line is you have a .36 degree drift to the left. Take into consideration road crown, and the vehicle should track very well.

If the vehicle is pulling to the right, something other than the alignment is causing it. There are other things that can cause a pull or drift such as:

Radial tire pull, (already mentioned).

Memory steer: caused by incorrect replacement procedure of outer tie rod ends, idler arm, pitman arm, upper ball joints, & lower ball joints. When any of these parts are replaced, the wheels must be straight ahead when tightening the fastener.

Thrust angle: The direction the rear wheels are headed, checked during alignment.

Problem with spool valve or centering valve, in the power steering gear box.

Hope this helps.