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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » BB&D Archives » Archive through September 08, 2011 » Rear Cylinder Rocker Box Gasket LEAK « Previous Next »

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Johnboy777
Posted on Tuesday, September 06, 2011 - 10:26 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Getting ready to rotate engine & replace my Rear Cylinder Rocker Cover Gaskets (both) due to a leak - very common, I guess.

Any thoughts on the install of the new gasket, to assure myself it doesn't leak again? RTV? Dance in the moonlight, etc.?

I'm intending to use the HD (top end) gasket kit 17036-91A ... per the service/parts manual.

Thanks

(Message edited by johnboy777 on September 06, 2011)
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Johnboy777
Posted on Tuesday, September 06, 2011 - 11:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I just spoke with the Cometic Tech Line (1-440-354-0777) and they said their part number for a 2007 Buell XB12 was C9954 @ $45.92

But online, it says the C9954 is for 04-06 1200/883 Sportsters. And shows a different part# (C9195) for ALL 07-UP Sportsters.

...
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Hughlysses
Posted on Tuesday, September 06, 2011 - 11:45 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

From what's been posted here, make sure all your mating surfaces are perfectly flat. Some people have done multiple gasket replacements only to find out they had a mating surface problem. If you find something that's not perfectly flat, try sanding with a piece of fine emery cloth on a piece of flat glass.

I wouldn't use RTV or anything like that. These rubber coated metal gaskets are 100% oil-tight if properly installed.
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Prowler
Posted on Tuesday, September 06, 2011 - 12:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I initially thought that my lower rocker box gasket was leaking and purchased a new gasket set to fix the problem. On teardown, found out the my middle rocker box cover seal GROOVE was too deep and the seal couldn't seal the leak because it couldn't "reach" the upper rocker cover (gap was causing the leak). I ended up putting a bead of silicone in the groove to fill it in a little, letting it harden up and then installed the seal in (what was left of)the groove. Seems to be working, hasn't leaked since.......
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