vibration problems
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Elder User
Joined: Sep 2002
Posts: 766
Likes: 0
From: Lakeville USA
vibration problems
i did a shackle flip a little while back and 2 weeks later i was getting vibes in 3rd gear (30 mph) under power i figured it was due to the pinion angle change. the angle is actually concave down when before it was concave up a bit. I welded in some angled shims and found one of the u joint bolts was a little loose. I tightened it up and now with the shims the pinion angle is about strait. I noticed a bunch of play in the u joint connecting to the pinion. like 1/4 of an inch. Now i get vibes at like 45 mph. They aren't extreme just annoying. I think I need to get bigger wedges to move the pinion down more to be at stock angle. This angle is not strait correct? ALso I was going to buy a new u joint.
Senior User
Joined: Feb 2000
Posts: 482
Likes: 1
From: Connecticut
If you have a single u joint at each end of the shaft, then the angles should be equal and opposite, preferably not much greater than 3 degrees. If you have a CV joint at the transfer case then the pinion angle should be near 0 degrees .
Mark
Mark
