Help with oil leak

davomoto · Post by **davomoto** » Thu May 31, 2007 2:35 pm

I purchased a mixed set on ebay, and it had two of the 6.5 mm seals. I just installed the motor in my other Cb77, and it also leaked from that seal. I also replced it with the extra 6.5mm seal, with a coat of three bond 1104 around it, and it cured that one as well. i don't know if my others were from a bad batch or what. I know that there are some seal sets for sale on ebay right now, or maybe someone else on this site knows a beetr source for new seals. Good luck with your project!

Davomoto

LOUD MOUSE · Post by **LOUD MOUSE** » Thu May 31, 2007 2:45 pm

Did you look at the edges of the seals that leaked?
Any sign of damaged edges?
Did you cut the sharp edge of the engine cases before you installed the seals?
I have those seals here if ya need more. ...............lm

davomoto wrote:I purchased a mixed set on ebay, and it had two of the 6.5 mm seals. I just installed the motor in my other Cb77, and it also leaked from that seal. I also replced it with the extra 6.5mm seal, with a coat of three bond 1104 around it, and it cured that one as well. i don't know if my others were from a bad batch or what. I know that there are some seal sets for sale on ebay right now, or maybe someone else on this site knows a beetr source for new seals. Good luck with your project!

Davomoto

joeweir1 · Post by **joeweir1** » Thu May 31, 2007 2:49 pm

Ed-How do you recommend cutting the sharp edges?I replaced a seal on my kickstart shaft last year and noticed the sharp edge shaved a bit of the seal.Joe

LOUD MOUSE · Post by **LOUD MOUSE** » Thu May 31, 2007 2:57 pm

Any sharp knife should do the job.
I use X-ACTO knifes here. .............lm

joeweir1 wrote:Ed-How do you recommend cutting the sharp edges?I replaced a seal on my kickstart shaft last year and noticed the sharp edge shaved a bit of the seal.Joe

davomoto · Post by **davomoto** » Thu May 31, 2007 6:03 pm

Yes, there was some damage to outside edge of seal, and I did not know about cutting the sharp edges on the cases. I have a deburring tool for cleaning up holes afetr drilling. I'll try that on my next engine that I do. Thanks for the great advice and help!

Davomoto

ggray · Post by **ggray** » Thu May 31, 2007 9:50 pm

If you don't mind me sticking my nose in it, you can shave the sharp edges with a short sturdy blade knife you don't mind cutting aluminum with. A burr knife would be preferable. (A three sided knife for deburring metal parts, Available through industrial supply houses that cater to machine shops)

Make sure none of the shavings get inside the bearing bore.

Just my $.02 worth.

Gary

LOUD MOUSE · Post by **LOUD MOUSE** » Fri Jun 01, 2007 2:57 am

I use an X-ACTO knife. .............lm

joeweir1 wrote:Ed-How do you recommend cutting the sharp edges?I replaced a seal on my kickstart shaft last year and noticed the sharp edge shaved a bit of the seal.Joe

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