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Alan Roehrich · 08-03-2009, 06:20 AM

Never had a good pinion shim fail, unless the pinion nut is backing off, or not tight enough to begin with. It is also possible that the bearings are not getting enough preload. Ordinarily, it will kill the shims on the spacer before it hurts the shim on the pinion bearing.

08-03-2009, 06:20 AM	#6
Alan Roehrich Veteran Member Join Date: May 2006 Location: Murfreesboro TN Posts: 5,113 Likes: 1,571 Liked 1,826 Times in 414 Posts	Re: 12 Bolt Chevy problem Never had a good pinion shim fail, unless the pinion nut is backing off, or not tight enough to begin with. It is also possible that the bearings are not getting enough preload. Ordinarily, it will kill the shims on the spacer before it hurts the shim on the pinion bearing. __________________ Alan Roehrich 212A G/S