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Old July 10th, 2012, 09:47 PM   #1
Plato2k5
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Default rear pinion angle

Had it perfectly at -2* of the yoke pointing down with my rear YJ leaf SOA CV shaft. Welded it all up, took it for a spin and rechecked to find its +2* now. What gives?

I hope I can just raise the tcase to take up the difference.
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Old July 10th, 2012, 10:21 PM   #2
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Did you have the vehicles weight on the axle when you were setting the pinion angle?
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Old July 10th, 2012, 11:52 PM   #3
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I sure did. Just can't figure out where I went wrong. I even had the axle center, then after getting it all done its 1/8" off to the driver side. I can't win lol. I guess 2 positive is better then the 5 it use to have before cutting the old perches off.

Would longer shackles or boomerang shackles help fix this in any way??
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Old July 11th, 2012, 06:09 AM   #4
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Did you have your u-bolts tightened up? There is more arch in your springs in a free state. Plus, you need to jump up and down on the bumper to seat the springs. Just dropping the jeep off the floor jack is not enough.

Longer shackles will make it worse, not better. If it's truly only +2 you are probably OK if the rest of the build is stout.
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Old July 11th, 2012, 12:06 PM   #5
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Quote:
Originally Posted by whiterhino View Post
Did you have your u-bolts tightened up? There is more arch in your springs in a free state. Plus, you need to jump up and down on the bumper to seat the springs. Just dropping the jeep off the floor jack is not enough.

Longer shackles will make it worse, not better. If it's truly only +2 you are probably OK if the rest of the build is stout.
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Old July 11th, 2012, 01:26 PM   #6
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Dang. Ubolts were snug so I could rotate pinion. I'll raise tcase to offset it. Thanks guys! Its better then the 5* it use to be.
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Old July 11th, 2012, 01:30 PM   #7
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Degree shims/wedges
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Old July 11th, 2012, 01:52 PM   #8
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is the parking spot level?
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Old July 13th, 2012, 05:44 PM   #9
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Why would you want your pinion pointing down?
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Old July 14th, 2012, 12:07 AM   #10
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Do you have a cardan joint at t-case?
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