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How do you get a dent out of a wd45 gas tank

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=196325
Printed Date: 12 Nov 2025 at 9:01am
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Topic: How do you get a dent out of a wd45 gas tank
Posted By: Jacob3647
Subject: How do you get a dent out of a wd45 gas tank
Date Posted: 26 Jul 2023 at 12:46am
I have a 1955 wd45 with a dent in the gas tank and was wondering how I could get it out



Replies:
Posted By: Dirt Farmer
Date Posted: 26 Jul 2023 at 2:20am
I would wonder if a skilled person at a paintless dent repair shop could or would be willing to try their magic. I have seen them take out many a door ding and other imperfections and most times you cant find them back and the original paint is usually never harmed, just buffed out. Most automotive dealerships have a source for such services that they use on trade in vehicles.


Posted By: DrAllis
Date Posted: 26 Jul 2023 at 2:29am
Like a body shop does. Weld or solder a nut to the very clean dent area and slide hammer it out. May take several times until you get it where you can bondo it. Bondo cannot be very thick or it WILL fall back out in a couple of years.


Posted By: nella(Pa)
Date Posted: 26 Jul 2023 at 5:39am
Originally posted by DrAllis DrAllis wrote:

Like a body shop does. Weld or solder a nut to the very clean dent area and slide hammer it out. May take several times until you get it where you can bondo it. Bondo cannot be very thick or it WILL fall back out in a couple of years.

Rough up the steel with corse emery paper so the bondo can adhere to the steel.


Posted By: JoeM(GA)
Date Posted: 26 Jul 2023 at 5:47am
painless dent guy’s are working with car panels that get thinner every year. Those gas tanks are made out of real steel

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Allis Express North Georgia
41 WC,48 UC Cane,7-G's,
Ford 345C TLB


Posted By: DrAllis
Date Posted: 26 Jul 2023 at 6:04am
You've got to get the dent smooth enough that you don't have a 1/4" of bondo in it. I don't care how rough you make the surface, if the bondo isn't pretty thin it DOES fall out over time, especially when the tank sits in the hot sun and then cools during the night time. Don't believe me. Ask a good body man if 1/4" thick of bondo in a golfball size dent is a smart idea.


Posted By: jaybmiller
Date Posted: 26 Jul 2023 at 6:22am
Best way... Use an electric stud gun ( yeah, another Canadian invention...). it took 4 or 5  studs to get the ugly dent fixed on  my D-14 tank. A few raps and taps later, guy had it smooooth enough ,it only needed 3-4 coats of 'high build' primer.
This guy does it for a living,30-35 vehicles a year, His gallon can of 'Bondo' ( the filler) ,lasts over  a year. He cuts bad steel out, welds in new, short strand fibreglas, a smidgin of bondo, thick primer, spot putty.



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3 D-14s,A-C forklift, B-112
Kubota BX23S lil' TOOT( The Other Orange Tractor)

Never burn your bridges, unless you can walk on water


Posted By: plummerscarin
Date Posted: 26 Jul 2023 at 7:15am

Am under the impression that body filler is now applied over a coat primer. Regardless, filler must be kept to a minimum. The stud gun method would be the most practical.


Posted By: nella(Pa)
Date Posted: 26 Jul 2023 at 8:54am
Originally posted by DrAllis DrAllis wrote:

You've got to get the dent smooth enough that you don't have a 1/4" of bondo in it. I don't care how rough you make the surface, if the bondo isn't pretty thin it DOES fall out over time, especially when the tank sits in the hot sun and then cools during the night time. Don't believe me. Ask a good body man if 1/4" thick of bondo in a golfball size dent is a smart idea.

Your are correct Dr., thick bondo dose not work well, but I rough up the surface even with a thin coat.


Posted By: JC-WI
Date Posted: 26 Jul 2023 at 12:09pm
if dents are to big or to ugly, get a good tank.


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He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."


Posted By: steve(ill)
Date Posted: 26 Jul 2023 at 12:32pm
https://www.youtube.com/watch?v=WmMS7b2uevU%20" rel="nofollow - https://www.youtube.com/watch?v=WmMS7b2uevU



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Like them all, but love the "B"s.


Posted By: IBWD MIke
Date Posted: 27 Jul 2023 at 9:23am
Originally posted by JC-WI JC-WI wrote:

if dents are to big or to ugly, get a good tank.
Exactly! Good WD tanks aren't that hard to find. Having said that, I don't know that I would want to use any of the spares I currently have. A good tumbling would shine one up though.


Posted By: BrianC
Date Posted: 27 Jul 2023 at 12:12pm
Where is the dent, can you see it on the inside from the filler hole?



Posted By: AC720Man
Date Posted: 27 Jul 2023 at 8:22pm
My WD also has a big dent behind the fuel cap about 10” away. I watched the video and tool is pretty neat. I guess if the tank was drained and then filled with water to the top I may would try that. Not sure how that would react with fuel. Certainly don’t wanna blow myself up! But I’m not sure it could pull out the dent with the older, thicker metal that was used in the 50’s. I’ve never used one.

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1968 B-208, 1976 720 (2 of them)Danco brush hog, single bottom plow,52" snow thrower, belly mower,rear tine tiller, rear blade, front blade, 57"sickle bar,1983 917 hydro, 1968 7hp sno-bee, 1968 190XTD


Posted By: thendrix
Date Posted: 27 Jul 2023 at 9:35pm
I have a cousin that does paintless dent repair. He fixed a grill for my CA and he said "I ain't working on no more damn tractors" . Guess Joe's comment about new panels being thin is right on

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"Farming is a business that makes a Las Vegas craps table look like a regular paycheck" Ronald Reagan



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