Final drive leak, both places?

tntmo

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I recently got back from a North Dakota to San Diego trip on the Tenere. Right around Dodge City, KS I saw my rear rim was coated in oil and there was oil all over the bottom of the "pumpkin". I stopped at the local WalMart and picked up some gear oil, popped off the fill cap and it was right at level. Wiped up the rear rim with some paper towels and noticed no more oil on the rim for the remainder of the trip. The bottom of the "pumpkin" still has some residual fluid now that I'm home. I did a tire swap in AZ at my friends place, the oil seal near the drive splines didn't look terrible.

2013 Tenere, about 49,000 miles.

Dust on the wheel after wiping up the oil. No more oil got on the rim but I imagine the seal is starting to go?
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Oil on the bottom of the shaft housing and "pumpkin". Seemed to collect a little bit there.

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You can see some oil on the hub as well. I couldn't get in there to wipe that up very good. It didn't get worse as I continued on my ride but it seems to point to the shaft seal that is a somewhat common occurrence? The oil on the top I think is from when I removed the fill plug. It was cold and rainy....what can I say??
1571014622680.png
 

EricV

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It's not particularly common. People have had leaks from different seals. I have ~150k on Super Tens between two bikes and have never had a final drive oil leak. Now that the bike has sat and cooled down at home, re-check the final drive oil level. If it's still at the top of the fill plug, odds are it was a little over filled before and with the heat of extended highway speeds perhaps this caused a little to puke out. Keep an eye on it, but I wouldn't do any seal replacement unless you see the fluid level down or start seeing oil again.

Perhaps a little soapy brush work to tidy up the wheel so it's easier to spot new oil wouldn't hurt either. I'm not a huge clean freak, but when I'm trying to identify old Vs new leakage, that does help.
 

tntmo

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Yeah, I took these pictures right after riding 2500 miles with a big chunk of it in the rain......the bike is usually slightly cleaner than that. I had done a 2500 mile trip a few weeks prior with no issues, so I don't believe the system was overfilled.

I'm going to do a drain and fill, of course clean everything up and see what happens.
 

steve68steve

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I had to replace a seal on the wheel side. Similar symptoms: oily funk on back wheel, wet pumpkin underneath. Looked like a LOT of lost fluid, but level in the pumpkin was practically full.

If you leave it parked, put a pc of paper or cardboard under the pumpkin to check for fresh drips. Mine leaked out strapped to a trailer for 3 days- it doesn't need to be hot/ running to dribble out of a bad seal.

The wheel - side seal is very easy to replace, using a trick learned here from member Silverbullet. You drill a small hole in the face of the seal, thread in a screw in very shallow by hand, use the screw as a handle to pull the seal out. Clean everything up and use the old seal to press the new one in.
 

tntmo

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Thanks y'all. I think I will just order the wheel side seal to have available. I spooned the tires on at my buddy's place and didn't balance the wheels so I should pull them off at some point to do that. When I do, I will just swap that seal.
 

tntmo

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I just cleaned that seal and it sealed again fine.
You aren't the first person who mentioned that, glad to hear it worked for you.

It looks like the seal on my bike started leaking and then stopped for my incident. I was riding through a lot of rain, maybe some crud got worked into there and then worked it's way out? Anyway, I figure if it happened once it's not a bad idea to have it on hand.
 

Tenman

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Thanks y'all. I think I will just order the wheel side seal to have available. I spooned the tires on at my buddy's place and didn't balance the wheels so I should pull them off at some point to do that. When I do, I will just swap that seal.
Pour some dyna beads in your tire. I've been using them for over 5 years. They work for me.
 

stomp347

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Aug 4, 2014
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Conn
Guys, reviving an old thread. On the parts diagram, which seal number are we talking about. I just returned from some long, high speed runs in the heat this past weekend, and ran into the same issue as described by the OP.

Thanks,
Stomp
 
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