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Output shaft seal leak
Posted: 09:05 am Jul 10 2007
by StickyTeflon
Can the output shaft seal be replaced from the outside or does the case need to be split?? if so, how? I have the service manual and it really only shows the exploded view of parts, not assembly?
BTW i did search for "output shaft" and "seal leak". and got a bunch of stuff that was unrelated .
Thanks
Sean
Posted: 09:07 am Jul 10 2007
by m0rie
Are you talking about the countershaft/sprocket seal? If so it can be replaced from the outside. You'll need the seal, oring(s) and collar if its grooved.
Posted: 09:18 am Jul 10 2007
by StickyTeflon
Yes the seal behind the front sprocket. how do i get it out to replace those parts you listed??
Edit:
Thanks but i found it. I discovered the online manual and it has instructions on how to remove and replace the seal.
It would be nice though if it had the part numbers listed.....
Posted: 04:21 am Jul 11 2007
by KDXer
I replaced mine and it still leaks. GRRRR. I think it is because of the Renthal front sprocket.
Posted: 10:42 am Jul 11 2007
by m0rie
Try using a thicker o-ring behind the collar Trev.
Posted: 11:34 am Jul 11 2007
by canyncarvr
I've used a number of Rethnal (sic, Inda) front sprockets. The only 'problem' with them is they fit much better than any other sprocket I've used and they wear much better, too. The JT (or somesuch) I just took off was WAY wonky...easy to see where the shaft had banged on the sprocket cogs.
I gotta go...have to get back to my noble quest..........
Posted: 08:54 am Jul 12 2007
by motorider200
Make sure you use two o-rings behind the collar. I thought I had a bad seal got it replaced still leaked... added an o-ring and problem solved.
Posted: 07:00 pm Jul 12 2007
by KDXer
I have tried adding an o-ring with a larger cross section but couldn't get the sprocket clip to go on then.
Yep definately have 2.
Posted: 08:11 am Jul 25 2007
by StickyTeflon
Well i finally got around to changing mine the other day. Every thing went well except for getting the old seal out. I had to invent a seal removal tool. I took a flat head screwdriver and cut a 2mm notch in it parallel to the bottom about 2-3mm from the end. I was then able to hook the seal without touching anything else and tug it out buy alternating sides. I used the old seal to tap the new seal in. BTW it only had 1 o-ring when i took it apart but i had also just recently put on new sprockets before it started leaking. I do believe the old sprocket had a larger cross section and pushed on the collar more so it didn't leak.
No leaks so far.
... Now its time to do the top end!!!!
Thanks for your help guys
Sean