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Join Date: Jun 2008
Posts: 9
Differential Help

1984 318i 5spd.

I was putting in new rear springs and when I was unbolting the rear drive axle I noticed the drivers side half shaft (part number 5)was pulling out of the rear diff! I noticed a lot of greasy oily dirt surrounding the input area so it's been leaking oil for a while. But what part on this diagram holds the half shaft into the diff? Looking at it I can't figure it out. I assume whatever part it is is broken or installed wrong.



I believe I have the lower diagram set up. It's separating between part number 6 and 8 and easily pulls right out. This can't be right? I'm afraid it will pull apart when I'm on the freeway or cornering hard. Thanks.

Old 02-17-2009, 03:21 PM
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Location: Atlanta
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There is nothing holding these pieces in place; they just snap in. Once the half shafts are installed, they make sure that piece #5 stays put.

As far as the leak from the differential is concerned, you can take care of that by replacing the seal, #7 and the o-ring, #11.

Be sure to do both left and right sides while you are there.
Old 02-17-2009, 04:36 PM
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Is this a noticeabe snap? Should I tap into place with a rubber mallet so it holds without sliding out? The seals look pretty easy to replace. Thanks for the reply.

Duane
Old 02-17-2009, 05:56 PM
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The best that I can describe this, it is like a snap-ring; it just takes a good push or shove and it slides right into place.
Old 02-18-2009, 04:41 AM
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OK Thanks for the info Yurick.

Old 02-18-2009, 05:42 PM
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