Can I get away with it?

TRUAX · Post by **TRUAX** » 11:07 am Dec 01 2016

Hey guys, so now that the weather has turned and I've gotten a handful of rides in on my new/old KDX I'll be doing some more thorough maintenance. First on the list is new sprockets and chain, and while I have the front sprocket off I need to replace the oil seal around that shaft where I have a small leak. My question is will I be able to get away with trying to replace this seal without splitting the cases? I know it can probably be done, but thought I would try and get some opinions on if I can get away with it or if it's not a corner I should be cutting.

bob_jones · Post by **bob_jones** » 11:16 am Dec 01 2016

My 1986 does not require case splitting for that. I am not familiar with any bike that requires case splitting for countershaft seal replacement. If I'm understanding you correctly.
http://www.kdxrider.net/forums/search.p ... shaft+seal

TRUAX · Post by **TRUAX** » 12:08 pm Dec 01 2016

You're probably right. I was just talking about it with my friend Pat who has a 96 of 97 H series, he thought I'd probably have to open it up to do it but this was after a couple beers after all!

doakley · Post by **doakley** » 02:38 pm Dec 01 2016

1. You should not need to split the cases (at least on my 1999 you don't).
2. You need a manual. Step by step instructions.

Post by **KDXGarage** » 08:51 pm Dec 01 2016

You DO NOT have to split the cases. You DO need to maybe drain the transmission oil, then do it, then refill the oil. Why? Because that seal "seals" in the oil.

It will leak. Don't ask me how I know, and I won't tell you to learn from my mistakes.

TRUAX · Post by **TRUAX** » 01:02 pm Dec 02 2016

Thanks for the response guys, this is looking more and more like a dumb question as a look at the thread haha. This rookie really appreciates all of this forums wisdom none the less.

Post by **bufftester** » 04:29 pm Dec 03 2016

One dumb question up front is a lot better than a dozen after the fact

TRUAX · Post by **TRUAX** » 11:53 am Dec 06 2016

haha this is very true

doakley · Post by **doakley** » 02:19 pm Dec 06 2016

Not dumb at all, but clearly explained in my manual. Got one yet?

Post by **KDXGarage** » 08:23 pm Dec 06 2016

I suggest that one replaced the collar, seal and o-ring(s) as a group, along with a new sprocket circlip.

TRUAX · Post by **TRUAX** » 12:10 pm Dec 21 2016

Thanks for the advice everyone. Just got the repair manual in the mail along with the seal, collar, o-rings, and circlip.

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