Oil leak at back of transmission 850T-3

[unclepete]

I have transmission oil leaking where the thrust bearing outer body exits the cover .
First time noticed ; trans is still full .
Is there a part that "usually" fails ? I see an O-ring in the parts diagram .
Looks awkward to get to . Can it be repaired in place ?
Thanks in advance .

[pete roper]

O-ring sits in the outer thrust cup. Drop off the clutch arm and, on a T, maybe the brake linkage and you should be able to pluck it out without even removing the swingarm.

Pete

[pehayes]

Good reason to inspect the throwout bearing.  Often it is bits of the bearing cage which tear up the o-ring.  Bearing is cheap insurance.  Just replace it and the o-ring.

BTW, if the rear cover bore has been damaged, I can install a stainless sleeve to restore it.  But, you'll have to disassemble the transmission for that work.

Patrick Hayes
Fremont CA

[unclepete]

Got it apart and back together . Bearing looked good , Replaced the o-ring . It was a little flattened , not much . Thanks again .