2008 Honda CMX 250 Rebel crank seal and parts manual

43 ft lb

Bruce F said:

Can anyone help me with torque on the flywheel bolt? The seal came out of the bore. I used red thread locker to hold it in. Hoping it stays. thanks, Bruce

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FAIL!

Leaking again, I found when I put the seal back in it went in too easy for my liking. Was hoping the red loctite would hold it. It did dry for a day before I ran it, so .....

I did reuse the seal as it was not worn but had popped out of the bore. Perhaps that was my error.

Haven't pulled it down yet but assume the seal popped out again.

Any suggestions on a better/different seal to use? perhaps one that has a metal OD not the rubberized type.
Is there any "unconventional" methods tried that would help (ie: stake the bore...)?

Thanks for the help so far.

Bruce

flitecontrol said:

It isn't a good idea to reuse a seal. "Saving" a few bucks that way often results in additional work and costing what it would have if the seal was replaced the first time. Most of those seal "failures" are due to excess crankcase pressure due to overfilling the oil. I doubt the original seal's failure to re-seat was due to how it was constructed.

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Reusing was a matter of convenience more than saving a few bucks, figured it wasn't leaking due to a worn lip.
As I said it seemed to me it installed back in too easily.
I've been a mechanic for 40years (just not motorcycle) and have installed, no exaggeration, thousands of seals.
Rarely have I reused a seal, but when I have it they would go back in about that same as when new.

Doing it a second time (now that I know how) will be much faster/easier.
I just didn't like how easy the seal pressed (if you call it that) into the crankcase bore.
I've been trying to look around on this forum to see if this is a problem, or for any more "permanent/better" fixes.
I did order a 35x52x7mm seal that should be here in a day or so.

Oil was not overfilled previously or this time. I did find the correct procedure for checking the oil level here on the forum a couple years ago.

I will check and clean the breather again, it seemed clear two weeks ago but IDK.

Thanks for the interest and advice

Bruce

The seal is still in place.

Well, now I’m wondering….
I did not remove the plate between the alt cover and crankcase when I put the seal back in.
when I removed the cover this time oil started dripping out between the plate and crankcase.
Could there have been (probably) oil in this cavity and that’s what’s leaking out now, and the seal was/is okay?

Not terribly hard to clean it up and try it.
New seals won’t be here for a couple days.
I got nothing to lose except my time.



The breather hose seems to be very clear. I can blow through it with almost no resistance.
How would I (or do I have to) remove the “trap” between the crankcase vent hose and the hose to the air filter for better cleaning.
Last time I blew through the hose and felt almost no restriction so I left it.

Thanks for the advice,
Bruce