Diesel Fuel Tank Repair

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Old 11-12-2016, 09:45 AM   #1
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Diesel Fuel Tank Repair

Before I embark on finding a shop to repair the fuel tank for my C7500, here is my question.

The tank sits on supports under the driver's door and has developed rust holes where it contacts the supports. I'm thinking the best fix would be to weld 4" wide flat (or would it be considered strap?) to reinforce the tank and eliminate the thin places in the tank. Good idea or not?

I know I need to thoroughly clean the inside of the tank and remove all remnants of diesel. What is the best solution (chemically) to neutralize the explosion hazard?
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Old 11-12-2016, 09:56 AM   #2
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Re: Diesel Fuel Tank Repair

For making BBQs we fill em with water.

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Old 11-12-2016, 02:25 PM   #3
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Re: Diesel Fuel Tank Repair

Buy a used tank and slap it in. Less down time and probably the same cost.

As mentioned welding it requires filling with water, then it should be well dried after. The chances of it actually fitting back into place with more material is slim too.
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Old 11-12-2016, 07:31 PM   #4
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Re: Diesel Fuel Tank Repair

We had a welder fix a couple spots on our lowboy alum. tanks. He had some scrap aluminum plate, mechanic dropped the tanks and emptied and guy welded them all one Saturday morning. Diesel isn't as bad as gas, empty and get as dry as you can maybe you can run a fan in it for a while to dry it out more. Only cost us a couple hundred bucks for the welder.
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Old 11-12-2016, 07:38 PM   #5
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Re: Diesel Fuel Tank Repair

Putting broken up dry ice in a tank displaces flammable vapor.
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