MD Water Trap

Haas · Mar 15, 2012

Recently took my MD out for some exercise. After I parked it, I noticed diesel fuel leaking from the water trap. I ordered a new gasket for the glass bowl on the water trap and installed it today. The old rubber gasket (which I had installed new a couple years ago) had turned to jelly, apparently destroyed by the diesel fuel. Now I can't seem to get the bowl to seal with the new gasket and it continues to have a small drip leak. What can I do to get rid of the leak?? The new gasket is also rubber, and I wonder if this new gasket is going to suffer the same fate as the previous one.

rustred · Mar 15, 2012

the aluminum sealing surface may be warped from over tightening the bail clamp. seen that happen.

Anonymous-0 · Mar 16, 2012

Can you tell if it's leaking between the bowl and the gasket or between the gasket and the aluminum part? I've not seen the gasket deteriorate on my MD. If you can pinpoint the leak, you could get everything totally dry and then use a tiny amount of RTV on the rim of the bowl, let it set until cured so none would be going into the fuel. This probably is not a great idea, but it might work if the leak is very minor.

Haas · Mar 16, 2012

No way to tell which side of the gasket the leak is on. I had wondered about trying some RTV on it. Also wondered about making my on gasket out of a cork sheet. I've had much better luck with cork gaskets on the gasoline sediment bowls. Seems like the rubber ones always want to leak. I think I'll try the RTV first. I'll seat the gasket in the metal housing with the RTV and then assemble and let it cure overnight. I suspect that the pot metal surface may be warped like Rustred said.

400D Guy · Mar 16, 2012

Like rustred says, the top could be warped. Mine was warped so bad, it was impossible to seal it. I got a good used one from Bates.

sflem849 · Mar 17, 2012

(quoted from post at 13:25:47 03/16/12) No way to tell which side of the gasket the leak is on. I had wondered about trying some RTV on it. Also wondered about making my on gasket out of a cork sheet. I've had much better luck with cork gaskets on the gasoline sediment bowls. Seems like the rubber ones always want to leak. I think I'll try the RTV first. I'll seat the gasket in the metal housing with the RTV and then assemble and let it cure overnight. I suspect that the pot metal surface may be warped like Rustred said.

Others have been sucessful with that plan.

MD Water Trap

Haas

Well-known Member

rustred

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Anonymous-0

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Haas

Well-known Member

400D Guy

Member

sflem849

Well-known Member

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