Mineapolis moline Za leaks gas from cap on new paint help

Anonymous-0 · Oct 8, 2010

My MM Za that I restored several years back has had a problem leaking gas around the cap onto the tank and new paint. The cap is a chrome vented cap. The problem happens even on a near empty tank. Can anyone help.

rvirgil_KS · Oct 8, 2010

My UB had same problem.

1. It had a pinhole leak in the seam where the neck was attached to the tank. I put some JB Weld on the seam inside the tank and cured that.

2. I tried several caps. The caps that I got have different gaps between the top gasket and the two teeth that grip the neck to pull the cap down. I made and added another gasket to give a tighter fit. (rubber inner tube will not work, gas fumes cause it to expand.)

Zachary Hoyt · Oct 9, 2010

My Farmall H is far from restored but I hate to have it leak and it has ever since I've had it, whenever I drive over a bump. Yesterday I had an inspiration when I saw an old spin-on oil filter sitting on the wall by the tractor. I removed the gasket from the filter and cut a little piece out so it was the right length to fit inside the gas cap. No more leaks yesterday when I was out in the woods. I don't know if the rubber will hold up but I figured since it was designed to deal with oil maybe it could take gas too.
Zach

Spook · Oct 9, 2010

I had that problem on my H. The solution was to get one of the high collar caps from IH.

Mineapolis moline Za leaks gas from cap on new paint help

Anonymous-0

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rvirgil_KS

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Zachary Hoyt

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Spook

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