Water in final drive

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Ramius

Race Dog
Joined
Mar 17, 2010
Messages
922
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Location
Hermanus
Bike
BMW R1150GS
After a Baviaans trip (with lots of watercrossings) I drained my final drive oil and found a milky emulsion inside.
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So annoyed that I didn’t replace the oil directly after the trip. Its a 10min job.

Water seems to leak in through the breather on top.
Is this a general problem on the 1150?

I inspected the 1200gs that went on the same trip: as I loosened the screw, it made a hissing sound (like breaking a airtight seal) as it was under slight pressure. Also interesting that the 1200 has no apparent breather down there..


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