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Unread 10-13-2013, 07:06 PM   #1
austrailian
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AMC 20 Bearing cap installation question

Changing out the ring gear and pinion on a 1980 CJ5 with AMC 20 rear end. I know the bearing caps are suppose to be reinstalled the way they come off (right/left and top/bottom orientation). Checking before I remove to mark them and I noticed that the caps are factory marked with an arrow and the word up.

I know the previous owner overhauled this rear end. The caps are installed with the "up" arrow pointing down. I am just wondering if the last guy got them on wrong or am I missing something.

Thanks for any input.

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Unread 10-13-2013, 09:43 PM   #2
LumpyGrits
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Put'm on the way they were factory marked.
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Unread 10-14-2013, 03:49 AM   #3
keith460
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I agree, put them back in as marked by the factory and don't rely on someone else who has apparently turned them up side down. If I were you and needed to change the bearings, pull the ring gear assembly out with shims and bearings and then bolt the caps back on with the correct orientation by themselves. Verify the alignment by looking at the factory cut marks in the bores of the caps to match those of the carrier and also use a pair of inside calipers to verify concentric of the bore.

I believe, if I remember correctly, the caps and carrier are stamped to match at least on one side from the factory.

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Unread 10-14-2013, 07:54 PM   #4
austrailian
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Thanks to both you guys for the info and taking your time to reply.
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