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Allis Chalmers Discussion Forum
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Rust in WD gas tank

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CoolHandLuke

05-06-2008 11:23:21




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Can anyone recommend a way to remove rust from the gas tank? The tractor runs great until rust clogs the fuel line.




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DARDAN

05-06-2008 22:57:07




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
I know this goes agaist some people's grain.
I cut the line between the sediment bowl and carb and installed one of those METAL in-line gas filters on all my tractors, keeps the fuel problems out of the carb.
It is easier to check/blow out the filter than to pull and clean the carb, and no gaskets needed.
I don't like the stand pipe on the sediment bowl. It keeps the dirt in the tank and if you get water in the tank it stays and rusts some more. I'd rather see whatever junk there is in the sediment bowl, where I can see and remedy it. After all, that's what the bowl is for.

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Ed in TX

05-06-2008 18:33:57




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
If it has a white coating in it it might be Kreem. It's a tank sealer sold in motorcycle shops since the 80s. If it's done right it lasts forever. I've only seen it done right once or twice and I've been in the motorcycle business for 25 years. I think acetone will take it out but that's some dangerous stuff to work with. we used to take motorcycle tanks to a radiator shop. They would strip them down to bare metal inside and out.

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John (C-IL)

05-06-2008 17:29:34




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
Quick fix, down and dirty, has worked for me,

Get one of those extention magnets on a stick and rake around on the bottom of the tank. It is amazing how much stuff you pull out and how much better your tractor will run.

In the end if you have a real rust problem you will have to remove the tank and clean it, but 10 minutes of time with a magnet is worth a try.



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Jeff Z.

05-06-2008 13:23:53




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
I have found the problem is more often in the inlet to the sediment bowl than in the carburetor.
Alot of people see gas in the bowl and think all is ok but the feed is slowed so much from a plugged inlet the tractor will not run anything over idle.



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Jeff Z.

05-06-2008 13:17:10




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
One thing I did to our D17 was after I cleaned the tank I took the sediment bowl out and drilled the inlet hole in the sediment bowl a little bigger with a 15/64 drill and then put a piece of 1/4 inch tubing in the sediment bowl inlet hole. The tubing sticks up higher than the bottom of the gas tank and it never plugged again. Once a year when it is almost out of gas I take the sediment bowl out and flush the tank.

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Will Herring

05-06-2008 13:11:42




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
We just wound up flushing mine a few times. Shake and let sit. Then flush it through the sediment bowl plug hole. Do this about 4 times with regular gasoline; filter and re-use the gas. I only get a little bit of crud, but nothing I can't blow through by yanking the choke or giving it some throttle.



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old

05-06-2008 12:54:18




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
What I have done in the past is pour in about a gal. of tranny fluid and shake it around a few times. Let it sit over night and shake it again. Drain it out the sediment bowl hole. I filter the tranny fluid so I can then use it for other things like stuck engines. Most of the time that will remove enough of the rust as to stop or slow the problem down a lot

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CoolHandLuke

05-06-2008 11:55:23




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
Thanks for the response. I should have mentioned that the tank already has some type of sealant (white in color) in it along with the rust. Will nuts and bolts still be able to clean out the rust?



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Jeff Z.

05-06-2008 13:20:34




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:55:23  
Probaly. I never cleaned one that already had sealer in it.
Try it with nuts and bolts and tranny fluid as a solvent like Old said.



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Jeff Z.

05-06-2008 11:32:10




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 Re: Rust in WD gas tank in reply to CoolHandLuke, 05-06-2008 11:23:21  
Put a bunch of nuts and bolts in it with some solvent and strap it to the wheel of another tractor while you use the other tractor.
You can also pressure wash it and use some rust remover and then coat it with gas tank sealer.

Eastwood Company has some good products.



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Jeff Z.

05-06-2008 11:39:28




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 Re: Rust in WD gas tank in reply to Jeff Z., 05-06-2008 11:32:10  
Here is a page on rust removal for motorcycles.
I like nuts and bolts better than sand.

http://www.motorcycleanchor.com/motorcycle/how_to/mc_tankrust.html



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