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how do u adjust the camber on a 1990 Z71
Unloosing bolts on rim and remove tire on either side that you want to adjust. Once tire is removedyou will have access to camber. There are two bolts on the camber and you can adjust them both left or right.
You might have adjustable bushings on your upper balljoints, jack up, take tire up, loosen pinch bolt and turn the bushing that holds the upperballjoint to adjust camber. If they are factory/non-adjustable: Get (2) camber adjuster bushings from an auto store. Jack truck, take tire off, you might need to turn the wheel before jacking up so you can unloosen the pinch bolt on the upper balljoint. Just loosen pinch bolt, and pry the old Camber bushing out (if it is OEM its probably not adjustable). tap new camber bushing in and turn to adjust the camber angle.
Rear camber is not adjustable on a Cherokee with a solid axle.
You don't
the bolts in the upper control arm have cams on them to adjust the camber and caster.
its the upper control arm bolts also called cam's. most of the time you have to replace the cam bolts and the bushings. that's the best idea for you to idea. rangers are pretty well known for junking those upper control arm bushings.
you cant
Adding or removing the shims on the upper control arm can adjust camber and caster.
you have to grind slots in the nuckle, then slide the nuts in or outwards, depending on what type of camber you want.
There is no factory camber adjustment for your truck. Your best bet would be to go to Napa and buy a set of camber bolts and have them installed. Cost is about $16.
Shims on a arm, but is tricky. Have it done at alignment shop if needed. (check tire wear) It's dirt cheap (like 30.00) so don't even mess with it.