Re: Milemaster pressure tank rebuild

[aquasonic]

quote Chris_P:

When installing the diaphragm, you are supposed to apply a thin coat of 3M 847 around the hole in both cupped washers. The side the diaphragm contacts. This is to eliminate air leaks at this point. Fuel could also leak out under the pump button.

Gasket sealing compound is not called for on the gasket nor the screws, however, as stated, I don’t think it would hurt. I put OMC Gasket Sealing Compound, or more 3M 847 on the screw threads and on the gasket itself.

Chris, are you referring to the older style tanks with the aluminum pump button?

I recall a post by Garry stating that OMC changed over to the plastic button setup partly because they did have problems with gas leaks through the aluminum buttons. I think that is why they eventually went to the plastic button with no button hole in the diaphragm.

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