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BMW R-Series Discussions of the Boxers EXCEPT the GS/GSA

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Old 10-05-2011, 01:06 PM
Nexus9 Nexus9 is offline
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Replaced Transmission, Creating a Motor Oil Leak? Baffled. Ideas...?

Hello fellow riders,

I recently purchased a used 2001 R1100RT which needed transmission work. I replaced the intermediate shaft and re-installed the transmission - and now suddenly, I have a BIG motor oil leak which seems to be coming from the clutch cavity, and is acting very much like a rear main seal. What's baffling is that when I replaced the transmission, the clutch cavity was dry and the clutch looked fine, so (under the premise of "if it ain't broke, don't fix it"), I never touched the clutch or removed it.
This oil leak is substantial, spraying all over my left foot after 20 miles of driving, and just DRIPPING out of the bottom of the bike when I stop. I've lost about a quart of oil in 75 miles. It is most definitely not transmission oil, as the motor oil needs to be changed and is dark in color; and after 75 miles of driving, I checked the transmission at the fill plug and the oil is right at the threads.

What in the world could I have done in re-attaching the transmission that would have created such an oil leak? I have a big ride coming up on October 15 (which I am leading, no less) - Any ideas or real-world experience would be much appreciated.

Jon
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Old 05-04-2015, 04:40 PM
toof toof is offline
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Re: Replaced Transmission, Creating a Motor Oil Leak? Baffled. Ideas...?

Did you find the source of your oil problem?
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Old 05-04-2015, 04:54 PM
BAK04GT BAK04GT is offline
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Re: Replaced Transmission, Creating a Motor Oil Leak? Baffled. Ideas...?

Quote:
Originally Posted by Nexus9
Hello fellow riders,

I recently purchased a used 2001 R1100RT which needed transmission work. I replaced the intermediate shaft and re-installed the transmission - and now suddenly, I have a BIG motor oil leak which seems to be coming from the clutch cavity, and is acting very much like a rear main seal. What's baffling is that when I replaced the transmission, the clutch cavity was dry and the clutch looked fine, so (under the premise of "if it ain't broke, don't fix it"), I never touched the clutch or removed it.
This oil leak is substantial, spraying all over my left foot after 20 miles of driving, and just DRIPPING out of the bottom of the bike when I stop. I've lost about a quart of oil in 75 miles. It is most definitely not transmission oil, as the motor oil needs to be changed and is dark in color; and after 75 miles of driving, I checked the transmission at the fill plug and the oil is right at the threads.

What in the world could I have done in re-attaching the transmission that would have created such an oil leak? I have a big ride coming up on October 15 (which I am leading, no less) - Any ideas or real-world experience would be much appreciated.

Jon
Maybe it is transmission oil?
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