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Crack/ hole in gas tank

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1 Dollar

11-11-2006 15:43:49

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The gas tank on my 1937 A has about a 1"-1.5" crack around the filler neck. I noticed this when I was washing the tank and getting it ready to paint it. How should I go about fixing this? I want it to look presentable because it is a visible part on the tractor and I just got finished painting it and I am currently working on reassembly. Can I do it myself of should I take it to a radiator/ gas tank shop that knows how to do this kind of stuff.

Thanks

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teddy52food

11-12-2006 17:46:40

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Re: Crack/ hole in gas tank in reply to 1 Dollar, 11-11-2006 15:43:49

Keep the torch away from the tank. Use it to heat a big soldering copper & fix the crack.

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F-I-T

11-12-2006 15:26:12

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How not to Poof in reply to 1 Dollar, 11-11-2006 15:43:49

If you try to solder a fuel tank without de-gassing it first, you're probably going to get a "poof" or worse. To avoid any of that, wash the tank inside two or three times at least with a good quality alkali cleaner like Simple Green, Kelite, or Purple Cleaner until it make suds consistently. Then, the secret weapon, go buy a can of spray brake cleaner that says it contains Perchlorethylene. This is the aromatic solvent that was used as a dry cleaner solvent for years, and it is NOT FLAMMABLE. In fact, it is the main ingredient in those $1 spray can fire extinguishers that we all used to keep in the combine tool box. Test it by spraying a spurt at a candle or a burning leaf. It will kill the flame right on the spot. The vapor is also heavier than air.

Now take your clean tank, with most of the water drained out of it and put a cork in the bottom and spray a good healthy amount into the tank. As it warms to room temperature, any flammable fumes (and there should not be any left after the thorough washing) will be pushed out the top as the "Prec" boils to a gas. Do this in a windy free area. Now you can solder it and it will never "poof". Much more dependable than car exhaust.

A few cubes of dry ice will also work, but it is not as effective in pushing the fumes out since "Perc" is so much more dense.

Frank

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john dear

11-12-2006 08:01:45

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Re: Crack/ hole in gas tank in reply to 1 Dollar, 11-11-2006 15:43:49

I just fixed a leak around the bottom bung on my JD 40 tank. Washed it good with soap and water, filled tank completely full of water and turned the bung to the top out of the water. Even then when the small area of the tank exposed got hot it poofed. Nothing major but had the tank not been full of water I might not be able to type today. If you work on it yourself, fill it with water! I used solid core solder, flux, and the torch. Basically same thing as your radiator man would use. Might be money and life ahead to let the radiator man do it if you have one brave enough to takle it.

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Mike M

11-11-2006 15:54:42

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Re: Crack/ hole in gas tank in reply to 1 Dollar, 11-11-2006 15:43:49

Looks like you also have one up above that one too. I would not hesitate to solder it shut. A really big soldering iron and clean it real good . Or if you have all the fumes out (I have used a hot water pressure washer before) maybe even fill it up with water ? you can use propane torch and acid core solder. I used exhaust once and had one puff on me I think the exhaust carries too many gas fumes so I won't use it again.

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Be Careful!

11-11-2006 18:25:28

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Re: Crack/ hole in gas tank in reply to Mike M, 11-11-2006 15:54:42

Tried soldering mine a couple months ago - washed with detergent and water for a long time and had a pretty good puff on it still (tank looked like a flame thrower out the two openings for several seconds...). Take it to a professional or be extremely careful!

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