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Thread: Possible rear main seal leak 1996 k1100rs

  1. #16
    3 Red Bricks
    Join Date
    Jan 2007
    Pleasanton, Ca.
    Please ignore my previous statement. I just checked both my Clymer's and my factory BMW manuals and there is no mention of soaking.

    The last RMS I did was a couple years ago and I KNOW I read that the seal should be soaked (No, I didn't read it on the internet). I would have normally installed it as GTRIDER suggested, but when I went to install it, I discovered I had to soak it. I now believe there must have been an instruction note that came with the factory BMW seal.

    So, if your factory seal doesn't have a note specifying soaking, don't. If it does come with those recomendations then I would suggest following them.


    Ride Safe, Ride Far, Ride Often

    Lee Fulton Forum Moderator
    3 Marakesh Red K75Ss
    Mine, Hers, Spare

  2. #17
    Registered User AntonLargiader's Avatar
    Join Date
    Jul 2004
    Charlottesville, VA
    I've bought a fair number of rear main seals from BMW and they have never come with instructions. I just get a seal (or several) in a plastic bag.

    It could be that the soaking thing was some misguided helpfulness by someone in the tech department, many years ago. Anyway, the seal is PTFE and it's not going to absorb anything in a useful way.
    Anton Largiader 72724
    Tech articles - YouTube
    Virginia Motorrad Werkstatt BMW motorcycle service and repair in central Virginia

  3. #18
    Registered User
    Join Date
    Sep 2005
    Commerce Township, MI
    bwoods1100, one thing I learned the hard way is that clutch assembly was balanced as a unit. Hopefully you either marked the pressure plate, housing and housing cover or can see other witness mark(s) so that it goes back together the same way it came apart.

    I ended up taking the clutch assembly to a auto speed shop with balancing equipment and had them rotate the pieces until they found the correct orientation.


    Richard Flood
    Last edited by richo2006; 08-07-2018 at 12:48 PM.

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