Weep hole leak

[Barn]

Just came back from a 9500 miles trip to Alaska. I live in middle Georgia. Me and two other guys trailered our bikes to Cody, Wyoming (2000 miles) and left from there on our journey. Trip went well except for blowing out both front fork seals coming back from Prudhoe Bay. I think it was in Fairbanks where we found a shop that had the parks and repaired it. Four hours later, we were on the road again. The rest of the trip went as clock work. We got back to Cody, load up and headed home. After returning home, I changed the engine and final gear oil. On my first test ride after the trip, I noticed oil leaking out of the weep hole. I just took it back apart and it is not the seal where the wheel hub joes into the differential. I took the four acorn nuts off and removed the final gear assembly from the bike. Oil immediately ran out from where they separated. The drive shaft tube was clean except the first two inches where they separated. The final gear assembly was dirtier than I would expect it to be. The drive shaft tube looked clean except for the first two inches. Is the seal at the output end of the final drive a dealer swap or is there videos to explain it. I watched the video for the other seal and it looks easy enough to do myself. Pictures attached. Any help would be appreciated.

 

[bimota]

here you are

Final Drive Front Seal and O-ring Replacement

First - thanks to @eemsreno for special tools, shop, and assistance in doing this job. If your whole rear wheel looks like this from oil weeping from the bottom of the swing arm it is most likely a bad seal and/or O-ring in the front of the final drive. It was a slow leak. I needed to add a...

yamahasupertenere.com

rob

 

[bimota]

Final Drive Oil Leak

Stevenson, It is a glitch, not a catastrophic failure. Like others have said, probably a seal, Yamaha will stand behind this, and it surely doesn't imply a rear diff that will take a dump in 20k or less!!!!

yamahasupertenere.com

rob

 

[Barn]

Thanks bimota, I did forget to mention it is a 2014ES and has 40K miles on it.

 

[Saint rob]

What was/is the oil level like, has it been overfilled and run at all?

 

[Barn]

The oil was just changed twice. The first time I changed it, I thought maybe I had overfilled it. It went on a 5-10 mile run just see if it would leak again. It will leak just sitting on the center stand.

 

[Cycledude]

Where is this “weep hole” you mentioned located ?

 

[TenereGUY]

I can't comment on the rear drive but I can on the fork seals. I blew my fork seals coming back from Prudhoe Bay too. Several people did. The guys I was riding with said they did too last year. This year none of them had problems and they all had shock sox on their forks. Cheap preventative maintenance item or accessory. Good luck on your rear seal.

 

[Tenman]

I constantly battled weeping seals till I got shock Sox. I use the long ones.

 

[Tenman]

Where is this “weep hole” you mentioned located ?

2" in front of your axle on the bottom right side of the swingarm

 

[scott123007]

I could be wrong. but what I'm seeing is a problem at the engine side, not the wheel side of the shaft. I have never had a problem with any shaft seals, so I can't help, but those write-ups above are for the wheel side of the drive shaft. If you have oil coming out of the weep hole on the Right side of the swingarm, it's coming from up front, not the rear. That looks more like engine oil, than GL-5.

 

[Saint rob]

I could be wrong. but what I'm seeing is a problem at the engine side, not the wheel side of the shaft. I have never had a problem with any shaft seals, so I can't help, but those write-ups above are for the wheel side of the drive shaft. If you have oil coming out of the weep hole on the Right side of the swingarm, it's coming from up front, not the rear. That looks more like engine oil, than GL-5.

“The drive shaft tube was clean except the first two inches where they separated” doesn’t that kind of rule out an engine oil leak?

 

[scott123007]

“The drive shaft tube was clean except the first two inches where they separated” doesn’t that kind of rule out an engine oil leak?

A little hard to tell by the pictures, Rob, but like I said, if oil is coming out of the RIGHT side of the swingarm, I think it would have to be coming from the top. I "think" it would be asking a lot for GL5 to travel upstream the length of the shaft tube, and then back down the other side.

 

[Saint rob]

A little hard to tell by the pictures, Rob, but like I said, if oil is coming out of the RIGHT side of the swingarm, I think it would have to be coming from the top. I "think" it would be asking a lot for GL5 to travel upstream the length of the shaft tube, and then back down the other side.

But isn’t it coming out of the left side of the swinging arm, OP has removed the final drive and that’s where the oil is - unless I’m looking at this wrong?

 

[bimota]

But isn’t it coming out of the left side of the swinging arm, OP has removed the final drive and that’s where the oil is - unless I’m looking at this wrong?

yep, the OP should have said left side as the picture shows the oil and the drive shaft pulled

rob

 

[scott123007]

Ok, let me explain why I said what I said. When Cycledude asked where the "weep hole" was that Barn alluded to in his first post, Tenman answered that it is on the RH side of the swingarm near the axle, so I made all of my assumptions from that post, since Barn said oil was coming out of the weep hole. But now I realize that Barn did not answer the question directly , Tenman did so I guess we can't be sure that that was the weep hole he was talking about.

 

[Barn]

I am finally in the process of changing the seals (93102-50009-00, 93102-70007-00, 93108-49003-00) and coupling gear (23p-46123-00-00) in the final gear. I there a trick in removing the seal on the drive shaft that goes into the gear coupling? The other seals were easy. I also read in one post that they rinsed out the inside of the final gear with kerosine before they re-installed the final gear on the motorcycle. Is that the normal?

 

[Madhatter]

kerosine will not hurt anything , its kinda like varsal ... and it should make things clean.

 

[Barn]

Just finally got the S10 back together and no leaking weep hole. It really was a simple process once you do one. The several posts that stepped us through the process really helps familiarize us with the job. I used the one that used the screws to remove both the wheel and pinion seal. The pinion seal was a good bit more stubborn about coming out. Finding four different seal drivers was the biggest job. Thanks to everyone that posts processes for these self-repairs. This really is a got forum with riders helping one another. Hope to return the favor one day.