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Thread: Transmissions vented ?

  1. #1
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    Transmissions vented ?

    Were all 55-69 transmissions vented. Were they vented thru the bolt (with a hole in it) at the speedometer gear drive on top right side of the transmission or somewhere else ?

    Im looking for cause of a new transmission input shaft seal leak. The bolt at the drive on my unit is a solid core and not a vented bolt.

    Any information regarding above conditions will be appreciated.

    Charlie

  2. #2
    '99 '03 '06 National Co-Rally Chair Friedle's Avatar
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    Quote Originally Posted by 72r60/7 View Post
    Were all 55-69 transmissions vented. Were they vented thru the bolt (with a hole in it) at the speedometer gear drive on top right side of the transmission or somewhere else ?

    Im looking for cause of a new transmission input shaft seal leak. The bolt at the drive on my unit is a solid core and not a vented bolt.

    Any information regarding above conditions will be appreciated.

    Charlie
    You found your problem. The bolt on the transmission for the speedometer drive should have a hole in it to serve as the transmission vent.

    Friedle
    Ride fast safely

  3. #3
    Liaison 20774's Avatar
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    Duane Ausherman shows all this near the bottom of this page:

    https://w6rec.com/bmw-2-motorcycle-t...ce-and-repair/
    Kurt -- Forum Liaison ---> 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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