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Antique Tractor Paint and Bodywork

Dent in fuel tank

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pat s

10-10-2004 10:40:22




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Got an AC mod CA with a dent about the size of a silver dollar. I have access to a dent remover that spot welds a small stud to the center of the dent to pull it but I am afraid to use it on a fuel tank. I saw somewhere that some one used air pressure to remove dent in tanks. Can anyone tell me the maximum pressure and if this is a succesful method?




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Kendall

10-20-2004 08:14:50




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 Re: Dent in fuel tank in reply to pat s, 10-10-2004 10:40:22  
Had a dent in my Harley tank about the same size. Smoothed it over with bondo, painted tank, cant tell it was ever there. The air and freezer might burst seams or distort it in a way you wouldnt expect.



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Robert in NC

10-14-2004 19:08:14




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 Re: Dent in fuel tank in reply to pat s, 10-10-2004 10:40:22  
I have heard that you can get dents out by filling the tank with water and pulling it in a deep freezer, but I haven't ever done this. What I did was just like your problem. I had a small dent in my Farmall M tank and didn't want to burn through the very thin metal. So I drilled a small hole in the middle of the dent and used a "molly" screw to expand on the inside of the tank. I then took a small chain and a come-a-long, positioned the tank between two beems of wood with tires to prevent more dents and popped it out. When I was done, I cut the molly screw off and let it fall out. To fix the hole I just soildered cover it and sanded it down flush. It took some time, but better time than ruining a restorable tank.. Hope this helps some.

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Robert in NC

10-14-2004 19:06:29




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 Re: Dent in fuel tank in reply to pat s, 10-10-2004 10:40:22  
I have heard that you can get dents out by filling the tank with water and pulling it in a deep freezer, but I haven't ever done this. What I did was just like your problem. I had a small dent in my Farmall M tank and didn't want to burn through the very thin metal. So I drilled a small hole in the middle of the dent and used a "molly" screw to expand on the inside of the tank. I then took a small chain and a come-a-long, positioned the tank between two beems of wood with tires to prevent more dents and popped it out. When I was done, I cut the molly screw off and let it fall out. To fix the hole I just soildered cover it and sanded it down flush. It took some time, but better time than ruining a restorable tank.. Hope this helps some.

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Georgia Boy

10-12-2004 09:51:43




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 Re: Dent in fuel tank in reply to pat s, 10-10-2004 10:40:22  
If you are going to paint the gas tank, why not just use some short fiber body filler?



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Frank Stalfire

10-10-2004 18:48:29




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 Re: Dent in fuel tank in reply to pat s, 10-10-2004 10:40:22  
I would advise against the airpressure idea for fear that you will blow out the pinch weld before the dent moves. It also depends were the dent is, if it's on or near a curve it would be even more difficult because the curves provide structure, I would opt for the Uni-spotter, be sure and fill the tank with water and don't hold the trigger to long so you don't burn through.



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