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Old 01-18-2013, 10:00 AM   #1
whitham_wannabe OP
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Joined: Feb 2008
Location: Mukilteo, WA
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R100 Final drive leaking

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 ...

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

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Old 01-18-2013, 11:30 AM   #2
gonerydin
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You see this a lot in COLD weather. You could switch to lighter viscosity oil or... just ignore it.
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Old 01-18-2013, 12:15 PM   #3
whitham_wannabe OP
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Seriously? It is very cold right now, about 26 degrees riding in this morning.

I am all about ignoring problems ...
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Old 01-18-2013, 01:30 PM   #4
ignatz72
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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.
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ignatz72 screwed with this post 01-18-2013 at 01:39 PM
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Old 01-18-2013, 02:24 PM   #5
Beemerguru
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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.
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Old 01-18-2013, 08:51 PM   #6
Wirespokes
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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.
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