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Crack/ hole in gas tank

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1 Dollar

11-11-2006 15:42:35

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The gas tank on my 1937 John Deere 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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dr.sportster

11-12-2006 07:59:48

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Re: Crack/ hole in gas tank in reply to 1 Dollar, 11-11-2006 15:42:35

Nice work kid! If you are the type thats is a perfectionist and will lose sleep over this then I think you could easily solder it yourself.You will then have to repaint the tank but will have the tank as original which is the real goal in restoration work.You will need a small hand torch and a lead stick and some flux.Dont try to use modern lead free plumbers solder.The thing about solder is its easy to remove any excess.When the radiator shop sees your new paint they are going to suggest they seal it for you[25-50 bucks].Your second pic shows you care and may want to go backwards a bit to do it right.Doing it yourself saves money.You must ensure there are no fumes in the tank.If you need half a lead stick and some flux let me know.Again good workmanship.

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1 Dollar

11-12-2006 13:52:11

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Re: Crack/ hole in gas tank in reply to dr.sportster, 11-12-2006 07:59:48

I really appreciate the compliment. I have been working on this tractor since January 7. I think that I am still going to take it somewhere because I want to have the little tank sealed as well because it is VERY rusty form not being used for many years. I'll learn on the next one. The fumes kinda throw up a red flag as well. Again, thanks for the compliment and those finished pictures shouldn't be more than a month away because everything is completely painted, just waiting on the tank and me to put it back together.

Thanks

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1 Dollar

11-11-2006 21:26:54

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Re: Crack/ hole in gas tank in reply to 1 Dollar, 11-11-2006 15:42:35

I have no experience in soldering so to the shop it will go. Being only 15 I still have a lot to learn, like where is the nearest radiator shop! Never had to use one before. I'll post pictures of the tractor all back together when I get there.

Thanks.

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135 Fan

11-11-2006 21:45:04

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Re: Crack/ hole in gas tank in reply to 1 Dollar, 11-11-2006 21:26:54

I think a lot of us could learn from you. That tractor looks pretty good. This forum is great for getting advice. Dave

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dr.sportster

11-11-2006 18:03:30

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Re: Crack/ hole in gas tank in reply to 1 Dollar, 11-11-2006 15:42:35

You noticed it when you were getting ready to paint and [dont get mad]but then didnt fix it before paint?If its soldered now you will have damage from the heat of the soldering.I would mask off the entire tank with tape and newspaper,pressing tape firmly over that seam/crack/leak area and apply two coats of tank sealer to that area only.Pour a little in and move it around upside down and let it dry then do it again.I would skip the acid etch and other prep and just apply the sealer locally.I would use the alcohol proof sealer due to modern gas formulas.If you could just pump a little on that spot with a pump oil can or a syringe.You dont have to coat the whole tank just stop the leakage right there.Any sealer that gets on the painted surface will ruin it so mask well.Dont let the tank sealer puddle up and make a thick spot.If you dont think you can just get the sealer exactly on that spot then coat the entire tank using two coats of sealer following the instructions that come with it.Watch for any leakage from around the cap area and rotate the tank for awhile.Sealer instructions say to pour in entire can the drain excess however I find it better to estimate the amount for an even coating and add a littte if you look in and see dry spots rather than to try to get it to drain out.The drain hole might be a pipe thread plug size or use a tight rubber stopper.Good luck and keep a good hold of the tank while rotating it to spread the sealer if you go the coat the whole thing route.Make sure the sealer dosent clog vents in your cap if you use the cap while spraeding sealer.Ive done it with the cap off and looked in at the flow of sealer also.Main thing now is to not damage the new paint job.Looks nice in the picture.

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Bus Driver

11-11-2006 15:52:26

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Re: Crack/ hole in gas tank in reply to 1 Dollar, 11-11-2006 15:42:35

I believe that seam was originally soldered. The radiator shop might be the best place to start in getting a repair.

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Bob

11-11-2006 16:11:51

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Re: Crack/ hole in gas tank in reply to Bus Driver, 11-11-2006 15:52:26

Exactly.

Nothing but solder will be a "permanent" repair.

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135 Fan

11-11-2006 18:35:44

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Re: Crack/ hole in gas tank in reply to Bob, 11-11-2006 16:11:51

I think it would be best to repair it from the outside. You would have to remove the paint down to clean metal. A radiator shop should be able to fix it pretty reasonably if you're not experienced. Dave

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