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Farmall & IHC Tractors Discussion Forum
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PHOSPHORIC ACID

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FARMIN RED

06-07-2004 12:42:01




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Where does on find phosphoric acid? I have used it with the gas tank sealant kits but i don't know where to find it otherwise. does anyone know if you dilute jit with water or use it full strength. I am going to use it after a lye gravy application to strip paint off of parts. one other question. Will the phosphate coating left on the metal affect any priming of parts with a urathane primer?

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Wardner

06-07-2004 15:02:35




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 Re: PHOSPHORIC ACID in reply to FARMIN RED, 06-07-2004 12:42:01  
Auto paint stores carry it in 1 qt plastic bottles. All the major auto paint brands also carry an expensive primer that contains the acid.

If you are painting a tractor and want a quality job, you need to get acquainted with your local auto paint jobber. You will get the right products and they will be high quality. The professionals can't afford to use the cheap stuff.



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Kendall

06-07-2004 14:28:30




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 Re: PHOSPHORIC ACID in reply to FARMIN RED, 06-07-2004 12:42:01  
A good hardware store will have it. The kits for gas tank cleaning, like Kreem, have acetone as a flush in preperation for the coating. Perhaps a rinse with acetone before priming would be in order.



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Haas

06-07-2004 18:34:16




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 Re: Re: PHOSPHORIC ACID in reply to Kendall, 06-07-2004 14:28:30  
The main purpose of the acetone acetone is not to clean the metal. It is to dry the tank getting all the water out before you apply the sealer. The acetone would also remove oil and grease, but would not remove any rust, etc as the phosphoric acid will.



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