R100 Final drive leaking

Discussion in 'Old's Cool' started by whitham_wannabe, Jan 18, 2013.

  1. whitham_wannabe

    whitham_wannabe Long timer

    Joined:
    Feb 26, 2008
    Oddometer:
    1,106
    Location:
    Mukilteo, WA
    My R100 sidecar is outside of work , all loaded up for Snow Camp, and I just noticed a bunch of fluid all over the back wheel.

    It appears to be coming out of the plug on the top of the drive unit. Any clues as to what the heck is going on here? It certainly doesn't look good ... :huh

    I guess my weekend plans might be changing ....

    [​IMG]
    #1
  2. gonerydin

    gonerydin Been here awhile

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    Iowa, USA
    You see this a lot in COLD weather. You could switch to lighter viscosity oil or... just ignore it.
    #2
  3. whitham_wannabe

    whitham_wannabe Long timer

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    Seriously? It is very cold right now, about 26 degrees riding in this morning.

    I am all about ignoring problems ... :D
    #3
  4. ignatz72

    ignatz72 call me iggy

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    When was the last time a fresh, NEW crush washer was used on the fill bolt? I'd bet a few fills ago...

    *edit* just noticed it looks like the breather is puking too, you sure it's not overfilled?

    I would not lower the viscosity of the gear oil, 80/90 hypoid.

    You'll likely get more answers quickly if you have a mod move this to the Airheads sub-forum.
    #4
  5. Beemerguru

    Beemerguru Beemerguru...G/S guy

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    Pull the fill plug and check the level..may be down a tiny bit. Cold weather caused the heavy molassis fluid to puke until it warms up a bit.

    Stay with 75-95.

    Ride to warm up, clean off...ride again to make sure it's not the housing gasket.
    #5
  6. Wirespokes

    Wirespokes Beemerholics Anonymous

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    I've seen this happen numerous times when it's cold. Fill it with synthetic instead and I think that should handle it. A failing transmission output seal can cause this same symptom, but circumstances don't point that direction.
    #6