McCormick W9

CG4440 · Mar 30, 2014

I have a 1946 McCormick International W-9. It has a lot of debris in the gas tank which causes the fuel line to plug. I plan on taking it off and cleaning it once the weather gets better. What's the best way to clean it? Thanks.

Steve@Advance · Mar 30, 2014

Depends on what's in the tank, most likely it's rust. If it's rust, good chance it's time for a new tank.
You can have it vatted out at a radiator shop, but that will probably cause leaks. Have to ask yourself if you want to gamble that investment on cleaning your old one or put that money toward a new one.

CG4440 · Mar 30, 2014

Ya it has millions of rust particles floating around haha. I'm trying to decide if I just want to sell the tractor as is and not put any money into it. I might go ahead and get a new one.

jeffcat · Mar 30, 2014

Is it gunk or rust. If you have no leaks and very little rust I would take the tank off and pour a couple of gallons of MEK into it and shake and let it sit and shake again. ETC. The MEK will remove all of the varnish and gunk. A little rust SHOULD stop at you settlement bowl. If the tractor set for a very long time the gas will evaporate away till all you have left is a real gooooey mess in the bottom. MEK is very strong stuff and will remove paint in an INSTANT so be very careful. Did a couple of old lawn mower tanks a chainsaw and a lot of carbs. Just my .o2$ so be careful!

glennster · Mar 31, 2014

you can clean the tank and then put a liner in it. it will seal the tank. i have done some myself, but i find it easier to just have a radiator shop clean the tank and put the liner in. generally runs about a hundred dollars or so. they sell the tank liner on this site.

McCormick W9

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