Pinion pattern

[mredd]

Originally Posted by jdalexa84

It has the pinion shim that was originally on my truck before. I think it did look like the inside diameter was a little small

You are assuming that the pinion gears are the same and that they are interchangeable without changing the shims. They aren't interchangeable. Each and every time you swap them out you must re-shim them. Set Pinion depth first then set backlash until the pattern looks like this: