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Thread: Rear Main Seal Leak

  1. #1
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    Rear Main Seal Leak

    I replaced my rear main seal about 2000 miles ago. I still have a leak and I wonder what experience others have had.
    I have a 1993 R100RT with 58000 miles.
    Thanks,
    Campbell Tellman II
    `````

  2. #2
    Registered User PAS's Avatar
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    Did you replace the oil pump cover O-ring also, and are you using synthetic oil? Mobil -1 caused mine to leak so I went back to dino.
    81 R100RT

  3. #3
    '92 R100GS '81 R100/t brittrunyon's Avatar
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    Quote Originally Posted by PAS View Post
    Did you replace the oil pump cover O-ring also, and are you using synthetic oil? Mobil -1 caused mine to leak so I went back to dino.
    81 R100RT
    Same here.........
    1992 R100 GS, 1981 R100/t, 2007 F 650 GS

    No Rules Photography at http://brittrunyon.com/
    My riding videos @ http://vimeo.com/user2721333/videos

  4. #4
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    Seal Leak

    I replaced oil pump seal and I use BMW 20w50 dino oil. I fear I have a tear down ahead of me.
    Campbell Tellman II

  5. #5
    Administrator 20774's Avatar
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    Have you perused Mr. Snowbum's article on rear main seals?

    http://bmwmotorcycletech.info/flywhe...valwarning.htm

    IIRC, there's a few special tricks about the installation of the seals on the newer bikes.
    Kurt -- Forum Administrator ---> Resources and Links Thread <---
    '78 R100/7 & '69 R69S & '52 R25/2
    mine-ineye-deatheah-pielayah-jooa-kalayus. oolah-minane-hay-meeriah-kal-oyus-algay-a-thaykin', buddy!

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