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Thread: Gearbox oil leak

  1. #1
    Join Date
    Aug 2006
    Location
    Melbourne, Australia
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    1,969
    My Cars
    1982 323i, 1997 318iS

    Gearbox oil leak

    I did a search and found a couple of related threads but no real information.

    My gearbox has been making a lot of noise so I finally crawled under it today to top up the gearbox oil. It seemed pretty dry, I couldn't feel any oil through the fill plug. I pour in a liter of oil and it still doesn't seem full enough and I don't have any more. Then I noticed a fairly fast drip of my new oil coming from the inside of the bell housing. Lovely!!

    My question is do you think it's just the input shaft seal or is there a crack in my case? I know I have to pull the box and I'll probably just grab one from the wrecker and replace the seals and install it but I'm wondering what my odds are of it being cracked.

  2. #2
    Join Date
    Jul 2010
    Location
    downingtown,pa
    Posts
    2,928
    My Cars
    1978 320i
    seals are usually a long slow death. good luck with the box but you replace the clutch while you are in deep. stay positive and take your tome.

    can

    time!
    Last edited by gsumzzz; 10-28-2011 at 06:53 AM. Reason: Automerged Doublepost

  3. #3
    Join Date
    Sep 2005
    Location
    monterey, ca.
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    14,486
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    e21, e30 m3. e46 330ci
    seal
    Tom D

    77 e21 - m42
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  4. #4
    Join Date
    May 2010
    Location
    Arizona
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    1,279
    My Cars
    82 320 I
    duck

  5. #5
    Join Date
    Nov 2007
    Location
    Sacramento, California
    Posts
    4,704
    My Cars
    1980 BMW 320i E21 M10B18
    Input shaft seal

  6. #6
    Join Date
    Sep 2007
    Location
    Pioneer, CA
    Posts
    1,865
    My Cars
    73' tii 79 320i 73'2002
    Can't forget to feed those damn shaft seals.

  7. #7
    Join Date
    Aug 2006
    Location
    Melbourne, Australia
    Posts
    1,969
    My Cars
    1982 323i, 1997 318iS
    Well, I'm thinking it's the reason for the box being dry, not the result; maybe a bit of both.

    Good info about doing the clutch as well. I have a stroker waiting to go in, hopefully in the next month or two, so I'll do the clutch then. Thanks for the input, guys.

    Oh, and "goose".

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