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DIY: Do It Yourself
Post here to share or improve your wrench turning skills! All BMW E46 DIY tips, tales, and projects discussed inside. Learn to work on your car and know the right BMW parts you will need!

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Old 04-18-2010, 11:30 PM   #1
jeffmr
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Front Differential

Does anyone have a picture of the front differential case to change fluid on a 2003 325xi? Thanks.
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Old 04-19-2010, 08:39 AM   #2
Kubica
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http://cgi.ebay.com/ebaymotors/BMW-E...Q5fAccessories

See the rusty bolt above the output flange in the picture? Use a 14mm hex head socket (allen) to remove that first. The drain plug will be on the bottom (right side of the picture-cant see it though) , and is the same size bolt. Take that off second. Get new crush washers for both.
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Old 04-20-2010, 12:27 AM   #3
jeffmr
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Thanks. I found it and changed the fluid. I re-used the washers on the front. When I did the back I didn't see the washers and didn't put them back on. Do you think this will cause any leak?
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Old 04-20-2010, 12:29 PM   #4
Kubica
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Quote:
Originally Posted by jeffmr View Post
Thanks. I found it and changed the fluid. I re-used the washers on the front. When I did the back I didn't see the washers and didn't put them back on. Do you think this will cause any leak?
Hopefully they were stuck to the bolts, but I'm afraid it will leak now. On the other hand, if there weren't washers before, and it didn't leak then, you should probably be ok. Tough call whether or not to do the job over now.
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Old 04-20-2010, 07:48 PM   #5
jeffmr
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I quickly took the drain plug off and put the ring on and plugged it back in. Pumped in a little fluid and added the ring to the fill plug. Should be no problem now.
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Old 04-21-2010, 08:09 PM   #6
Kubica
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Nice. You can physically put more than the spec amount in the front diff. I just fill that puppy up until it spills out the fill hole.
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