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Best way to get rust out of a gas tank before it g

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Gibby

12-30-2004 20:55:06




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I was checking out my farmalls tank and I discovered a bit of rust on the bottom and some on the sides. What is the best way to remove it?
Thanks
Davr




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Brian Schmidt

12-31-2004 16:47:13




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 How about electrolysis?? in reply to Gibby, 12-30-2004 20:55:06  
I hear lots of talk about electrolysis on this website, yet nobody has ever suggested that for cleaning a fuel tank. Seems to me that would be a perfect way to do it. Anyone who has ever tried the electrolysis care to comment??



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DAVE NE IOWA

12-31-2004 10:50:34




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 Re: Best way to get rust out of a gas tank before in reply to Gibby, 12-30-2004 20:55:06  
Just like to mention I prefer to use shot made for shotgun shells over rocks because I misguesed a few rock sizes. Lead shot double 00 is good but any size will do. If the baffles are real close to the tank---with a very little opening, you should make sure the shot is small enough to sneak under the baffle---like a no. 7 shot. Although it is inexpensive, you can reuse the shot for ever. Another good point is to turn the tank upside down and with (alot of common sence) tap on the rusty bottom side to jar loose some of the rust before duck taping it in the wheel spokes.

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Dave in CT

12-31-2004 08:51:23




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 Re: Best way to get rust out of a gas tank before in reply to Gibby, 12-30-2004 20:55:06  
This isn't the _best_ way but it may be sufficient. A couple of winters ago, I had a problem on the tank to my '47 H with rust flakes blocking fuel flow. It was as you describe your tank - a bit of rust on the bottom and some on the sides. It being winter and cold, I didn't want to go through any major procedure so, with the suggestions of folks here, I used the magnet-removal method. I used a magnet (of a diameter so it would just fit through the filler neck to the tank) with a metal backing plate with a hole that would accept an eye bolt, through which I could hook a coathanger wire. With this setup, I took the magnet and waved/slid it over the rusty areas. I pulled out quite a quantity of flakes and particles. After that I took off the sediment bowl, cleaned that, let the gas flow into a container for a while and then reassembled everything. Then I put a filter in the line. After all this was done and I was pretty sure that 95% of the particles were removed, I left the magnet right next to the outflow port. Now I pull it out a couple of times a year and it's got _some_ particles sticking to it but not much. I haven't had a problem with fuel flow since that first winter. This wasn't the thorough, complete method of doing the job and my tank didn't have baffles but I believe it was enough. For what that's worth to you. Good luck.

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CNKS

12-31-2004 07:56:17




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 Re: Best way to get rust out of a gas tank before in reply to Gibby, 12-30-2004 20:55:06  
A "bit" of rust? -- leave it alone. All tanks will get that rust if not started often. A different matter is if there is enough to get into the tank outlet.



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Farmer Bob

12-30-2004 21:52:26




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 Re: Best way to get rust out of a gas tank before in reply to Gibby, 12-30-2004 20:55:06  
There are many remedies but my favorite is to remove the tank, remove the sediment bowl and put about 25 or 30 small rocks like 3/4" or less in the tank. put the cap back on the tank and strap it to the wheel of another tractor. Jack the tire up off the ground and start the tractor and put it in low and idle it down and let the freewheel turn with the tank strapped to it. It is like tumbling gem stones. It will work the rocks you put in back in behind the baffles and knock the rust off. You can add about 2 quarts of water to the tank if you want. After turning the tank around and restrap it to the wheel so you get all the rust free Unstrap it and remove the cap. Shake all the rocks and rust out you can and then flush it out real good with diesel or kerosene. Leave it upside down on sawhorses and let it drain fully. Depending on how deep the rust spot have progressed, you may want to consider using a commercial tank cleaner sealer like Kreem or Por-15. Both are available through NAPA or online.

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Gibby

12-31-2004 05:08:47




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 Re: Best way to get rust out of a gas tank before in reply to Farmer Bob, 12-30-2004 21:52:26  
Thanks for the info. Since it's raining today I think I'll try your method.

Thanks
Dave



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RustyFarmall

12-31-2004 07:56:31




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 Re: Best way to get rust out of a gas tank before in reply to Gibby, 12-31-2004 05:08:47  
Use a little caution, those rocks can very easily become trapped between the bottom of the baffle and the tank, and you will never get them out.



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