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How To Fix A Leaking Plastic Gas Tank


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#1 jimbobbillyray OFFLINE  

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Posted October 04, 2012 - 05:56 PM


went looking for a way to repair instead of replace a leaking gas tank on my 312 john deere. Found this video, it looks like some good information, so I wanted to share it.
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#2 KennyP ONLINE  

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Posted October 04, 2012 - 06:06 PM

That's pretty cool! Thanks!

#3 bowtiebutler956 OFFLINE  

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Posted October 04, 2012 - 06:24 PM

I've always used JB Stick to repair plastic tanks, but that looks easy, and is probabally a better repair. Thanks! :thumbs:

Matt

#4 UncleWillie ONLINE  

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Posted October 04, 2012 - 06:29 PM

I've always used JB Stick to repair plastic tanks, but that looks easy, and is probabally a better repair. Thanks! :thumbs:

Matt

Gas will eventually eat away at JB weld and then you re right back to where you started. Better to do it right the first time.

#5 HDWildBill OFFLINE  

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Posted October 04, 2012 - 06:47 PM

Good info. I may have another go at a tank I have.

#6 Bud OFFLINE  

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Posted October 04, 2012 - 06:50 PM

thanks for posting the video. I have used a hot glue gun to fix a plastic water tank. There are different types of glue sticks you can buy for different plastics. I held the glue gun on the tank to melt it and added the glue as needed. When I was a young kid, many years ago, I use my wood burning tool to fix a hole in a car battery the same way, probably not something I would try today.

#7 Alc OFFLINE  

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Posted October 04, 2012 - 08:11 PM

Thanks for posting the video :thumbs: Al

#8 MH81 OFFLINE  

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Posted October 04, 2012 - 10:40 PM

A warning. Many soldering irons have an internal switch to regulate temp. These switches wouldn't have an "explosion proof" rating. Not to scare anyone, but just be careful. Just because there's no flame, doesn't mean no chance of a problem.

When you're folding the plastic in again, try not to make bubbles in the plastic. It can be a weak spot.

One more thing, don't do this with your good soldering iron tip. Use an old tip or plan on buying a replacement for it as the plastic seems to first destroy the tinning of the tip, then it will cause pitting.
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#9 HDWildBill OFFLINE  

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Posted October 05, 2012 - 08:57 AM

Good advice Alan, When I was watching the vid I thought about the gas still in the tank. Better to be safe then sorry, drain and purge the tank first.

#10 Guest_rat88_*

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Posted October 05, 2012 - 01:53 PM

It seems to work on this application although I would like to see if it still holds a year from now. The fuel tank is not that thick. Oil can "filler rod" might work. I have a plastic welder. It works fine to melt plastic and blend it back together. I have never had any luck adding material with the filler rods. They dont seem to mix right. I have several different types of rod. It might be operator error.
I have used the 2 part marine epoxy sticks to repair fuel tanks. they seem to work pretty good

#11 jimbobbillyray OFFLINE  

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Posted October 07, 2012 - 07:32 PM

Well, I tried out this solder iron plastic gas tank repair on my JD 312 gas tank, and it worked! I also used a little piece of oil can plastic as filler, as suggested in the video. It was an easy task, a lot easier than I thought it would be.

#12 HDWildBill OFFLINE  

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Posted October 07, 2012 - 10:22 PM

I didn't fix a gas tank but I did take the info from the vid and fixed the GPS holder that broke. It came out looking pretty fair and it held the GPS all day today. I used the plastic welding kit from HF with the plastic rod's




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