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whitham_wannabe 01-18-2013 09:00 AM

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 ... :huh

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

gonerydin 01-18-2013 10:30 AM

You see this a lot in COLD weather. You could switch to lighter viscosity oil or... just ignore it.

whitham_wannabe 01-18-2013 11:15 AM

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

I am all about ignoring problems ... :D

ignatz72 01-18-2013 12:30 PM

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.

Beemerguru 01-18-2013 01:24 PM

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.

Wirespokes 01-18-2013 07:51 PM

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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