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Thread: Oil seal cork washer behind main drive sprocket 1957 Panhead

  1. #1
    Join Date
    Mar 2010
    Posts
    190

    Default Oil seal cork washer behind main drive sprocket 1957 Panhead

    Hi,
    I'm changing the oil seal (2163-36) behind the sprocket on the transmission from my 1957 FLH. Behind the oil seal is part number 2163-36B - oil seal cork washer. I don't have this part. Local input is that the cork washer is not necessary. I think that the engineers who designed the system had a reason to have it there. Normally I'd just order the cork washer but I'd like to have the bike back together for an upcoming event. What's the groups thinking on if the cork washer is needed or not?

    Steve Slaminko

  2. #2
    Join Date
    Aug 2004
    Location
    Beautiful Northern New Mexico
    Posts
    3,108

    Default

    The cork washer was used in the days when the oil seal was a plain steel exterior surface. The edge of the seal could press into the cork to prevent oil seepage around the exterior of the seal. Modern replacement seals are generally coated with a vinyl type coating that acts as a sealer to the material it is pressed into, so there is usually no leakage unless the seal bore in the case is damaged. So you can use it or not depending on your replacement parts.
    Robbie Knight Amca #2736

  3. #3
    Join Date
    Mar 2010
    Posts
    190

    Default

    Thanks Robbie.

  4. #4
    Join Date
    Mar 2017
    Posts
    518

    Default

    Here is a video that shows a couple of upgrades on the seal.

    https://m.youtube.com/watch?v=7qDZZloH62s

  5. #5
    Join Date
    Mar 2010
    Posts
    190

    Default

    Great video. Thanks.

  6. #6
    Join Date
    Jul 2012
    Location
    Inman, South Carolina
    Posts
    82

    Default

    The cork also acts as a spacer to keep from seating the seal to deep. If you don't use it, be sure and just seat the seal flush with the case. If seated to deep, it will bind the sprocket spacer and cause a lot of drag on the sprocket.

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