Allis unstyled wc leaky tank
Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=142358
Printed Date: 02 Oct 2025 at 3:44am
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Topic: Allis unstyled wc leaky tank
Posted By: ac89
Subject: Allis unstyled wc leaky tank
Date Posted: 11 Sep 2017 at 7:01pm
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Hey everyone. So I have a slight problem. My gas tank is leaking at the seam underneath. Was wondering what you all would do to repair it?
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Replies:
Posted By: Sugarmaker
Date Posted: 11 Sep 2017 at 7:38pm
Some pictures might help. I would recommend brazing as the best solution, Soldering would be next. Hardest part might be trying to get a old rusty joint clean. I have repaired some Allis tanks using both methods.
Regards,
Chris
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D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet.
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Posted By: ac89
Date Posted: 11 Sep 2017 at 8:09pm
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I can't upload pictures sorry. It isn't rusty at the seam. It has separated a tiny hair. It had some sort of calking sealer. Was this possibly factory? Also what would be a safe way for me to do say soldering? Thanks
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Posted By: dawntreader74
Date Posted: 11 Sep 2017 at 9:11pm
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i cleaned a seem real good an used JB' weld on it about 6 years ago' painted over it an it still has good paint never leaked yet' it will also fix a crack on a block' it should work on your tank.
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Posted By: JW in MO
Date Posted: 11 Sep 2017 at 9:18pm
I use an old fashioned copper soldering iron, heat it with a torch away from the tank, takes a bit to figure out the heat, not too hot and not too cold but have fixed a few. Never used an electric one but may be able to keep the heat more even. The main thing is to get it CLEAN, CLEAN, CLEAN. If it is silicone or whatever, scrape that out as much as possible, use a wire brush to clean it up then brush it some more. I use acetone to flush out any oil or fuel residue, (any oil will cause the solder to pool and not stick), let it dry, apply flux liberally then solder and you can melt off any excess solder later. I then fill the tank with water and check for leaks. Once you get the hang of it, it will go pretty fast. Two keys to soldering a crack is to get it clean and apply the heat evenly to both sides. You can find old soldering irons at thrift stores fairly cheap.
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Maximum use of available resources!
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Posted By: Lonn
Date Posted: 11 Sep 2017 at 9:30pm
Run a water hose in the tank for 15 or 30 minutes then put an air hose in the tank with a blow tip taped open so air is constantly being flushed through the tank while you solder or braze. Of course it needs to be dry before repair.
But, even though I've done this more than once and was shown how by an old mechanic, I don't recommend doing anything like that on a fuel tank because an explosion could be the end for you.
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I am a Russian Bot
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Posted By: ac89
Date Posted: 12 Sep 2017 at 3:18am
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That's what I'm worried about lonn. I think im going to try the jb weld for now. Thanks everyone for the helpful suggestions!
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Posted By: Ted J
Date Posted: 12 Sep 2017 at 7:24am
Charlie, give this a try.........
http://www.bellautomotive.com/Gas-Tank-Repair-Epoxy-p/22-5-00915-8.htm" rel="nofollow - http://www.bellautomotive.com/Gas-Tank-Repair-Epoxy-p/22-5-00915-8.htm
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"Allis-Express"
19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17
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Posted By: ac89
Date Posted: 12 Sep 2017 at 2:40pm
Posted By: Steve Bright
Date Posted: 12 Sep 2017 at 8:29pm
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I have an unstyled WC that we are going to part out, Has a great gas tank. call me if you cannot fix yours. 317-979-2229
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Posted By: Bob D. (La)
Date Posted: 13 Sep 2017 at 4:28am
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Regardless of your method of repair, cleaning first is the only way for it to be successful. If its not cleaned properly and completely, any method will likely fail. Don't ask how I know. LOL
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When you find yourself in a hole,PUT DOWN THE SHOVEL!!!
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