Carrier shims and whine - MustangForums.com

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Carrier shims and whine

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Old 12-02-2015, 02:24 PM
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92 5.0stang
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Default Carrier shims and whine

A couple months ago I put on a new diff cover. While I was under I checked everything out to make sure no chipped teeth and even wear. Everything looked great, so I bolted it back up filled it up with royal purple 75w90 and friction modifier and off I went. Then over the last week I started getting a whine that was quite unbearable from the rear that seemed to go away if i turned right. Confused I decided to drain the diff and there were metal shaving everywhere! So i unbolted the cover and checked the ring and pinion for the problem and I couldn't see any problems but then I noticed that the driver side carrier shims were all sticking out. This was not like this on the passenger side. What could of caused this?

Last edited by 92 5.0stang; 12-02-2015 at 04:08 PM.
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Old 12-02-2015, 02:32 PM
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92 5.0stang
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Old 12-02-2015, 07:25 PM
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mjr46
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not enough preload on side bearings, which is why they backed out......whom ever set up the rear didn't do it right............i, IF STARTING WITH FACTORY SHIMS MEASURE THE THICKNESS, then if I have to use aftermarket shims I use the same total thickness of the two and place them on the appropriate side to get bcklash set properly, this way I always maintain proper preload on side bearings
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Old 12-08-2015, 08:52 AM
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Boss_Hotrod
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Yeah mjr is right. The total shim thickness should be around .540" Anything less and the shims will fall out since there isnt enough preload to hold them in. I think when I just redid mine I ended up with .543" total shims.
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