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Thread: front axle shims

  1. #1
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    front axle shims

    Does the axle shims point fwd or backwards on front axle of yj?
    I think they face backwards.
    Let me know what u know
    Thx
    Bill
    Blenheim-boy

  2. #2
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    That depends on whether you're trying to increase or decrease the caster angle. To increase, the thick part goes to the back.

    With larger tires you would generally need to increase the angle.

  3. #3
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    I wouldn't reccomend using shims in a front axles. They will not stay tight and eventually fly out. The ONLY way I would consider it would be if you had shims that go through the u bolts. If you need to change the front pinion angle I would strongly suggest cutting off the perches and weld them in the correct location for your setup
    79 GMC K2500 converted shortbox stepside K3500, 454 BBC, SM465l, Dana60/14b w 4.56,
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    Shims are commonly used on a leaf spring front axle to adjust the caster angle - NOT the pinion. To set up the front drive shaft, you don't change the pinion angle but use CV joints on the shaft itself. This is one application where you can end up using a double cardan joint at each end of the drive shaft because of U joint angles that aren't equal. If you try to set up the front drive shaft the same way as you set up the rear, you end up screwing up the steering geometry - set up the steering angles first, then set up the front drive shaft.

  5. #5
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    Thx For info guys
    Installed and ready for enine to get dropped back in project
    Thx
    Blenheim-Boy

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