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Farmall & IHC Tractors Discussion Forum
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Tight Tire Bolts

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WonderingAl

10-17-2007 10:16:11




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I"m trying to swap out rear tires on my Farmall H but the heavy bolts seem to be locked on, rusted somewhat. Any ideas for their removal? With the least amount of damage????? In general with rusted bolts, is there any substance that helps loosen things up? Something that breaks the rust down and frees up whats stuck????

thanks....WonderingAl "Frozen-up"




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glennster

10-17-2007 14:04:34




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 Re: Tight Tire Bolts in reply to WonderingAl, 10-17-2007 10:16:11  
like steven said use a penetrating oil. i like pb blaster, any autoparts store sells it. if there is paint on the threads sealing the nut, wire brush some off so the oil can creep in there. if you dont have acess to a cutting torch or impact, try a propane torch and just warm the nuts up some. this will cause them to expand, then spray em up. if i remember, the h uses a 7/8 or 15/16 nut. see if you can buy or borrow a 3/4 drive breaker bar and a socket. get the breaker bar on the nut and rock it back and forth just enough to get it to move, then spray it up some more. you should be able to get them off then. run the nuts almost all the way out, then get the wedges loose. be careful if the tire is loaded with chloride and water, its real heavy,maybe 5-600 lbs. you may have to let the nuts soak for a day or two. chase the threads with a die before you put em back on, i dab a little anti seize on the threads too.

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Andy Martin

10-17-2007 12:54:29




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 SAFETY WARNING Tight Tire Bolts in reply to WonderingAl, 10-17-2007 10:16:11  
Beware of heat around inflated tires. You can wide up with a fatal blowout.

Deflate tires and take the valve core out before heating. If you ruin a tube it is a small price compared to a ruined life.



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ScottyHOMEy

10-17-2007 17:52:51




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 GOOD CATCH! in reply to Andy Martin, 10-17-2007 12:54:29  
n/m



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Wardner

10-17-2007 20:42:08




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 Re: GOOD CATCH! in reply to ScottyHOMEy, 10-17-2007 17:52:51  
You have to be a total Tyro Pyro to blow a hole in a rim or tire while cutting lug bolts. And even if you did do that, there would not be an explosion.

The initial rush of air from the first small penetration should be enough warning to let the torch operator know he had screwed up. There would not be a progressive chain of event that would lead to a catastrophe.

Let's get real, people.

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Ron in Nebr

10-18-2007 09:53:23




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 Re: GOOD CATCH! in reply to Wardner, 10-17-2007 20:42:08  
I think the safety precaution they were referring to wasn't "blowing a hole" in the rim with a torch, but rather heating the rim/tire enough that the air inside expanded to the point where it blew up just due to too much air pressure.

Like ya said Wardner, a person would have to be totally careless to ever have that happen. But I've heard and read that warning several times before too, so I don't think people just made it up. Someplace, sometime, there probably was a guy who's elevator didn't quite reach the top floor who decided he was gonna straighten a bent rim or something while still inflated by heating it red hot and hammering it back straight.

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Andy Martin

10-18-2007 10:59:13




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 Re: GOOD CATCH! in reply to Ron in Nebr, 10-18-2007 09:53:23  
It apparently does not even take that much heating.

I have read of multiple instances of people being killed when welding on rims, from overheating the rim and exploding the tire.

I have never seen a detailed report, but I can imagine someone innocently putting more and more heat on a lug, warming the rim.



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Steven f/AZ

10-17-2007 10:55:20




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 Re: Tight Tire Bolts in reply to WonderingAl, 10-17-2007 10:16:11  
Use PB Blaster, Kroil, or other good "penetrating" oil. Do not use a "lubricant" spray like WD-40.

I have personally had excellent luck using PB Blaster and the CNH penetrant spray.

Then use an impact wrench - the vibrations/impacts help break the rust loose instead of twisting the bolts off. If that doesn"t work, break out the fire wrench and heat them up... if that doesn"t work, push the lever on the fire wrench and annihilate them! LOL

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Wardner

10-17-2007 12:03:07




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 Re: Tight Tire Bolts in reply to Steven f/AZ, 10-17-2007 10:55:20  
Nuts can be torched off without damaging the bolts. I just did that to 8 wheel bolts on my 660 (3/4 fine thread). I think I nicked one bolt. It wasn't bad so I reused it anyway. Pipe can be cut out of fittings in the same way. It's all about getting the nut up to oxidizing temps while the bolt stays at a lower temp.

It'll take some practice so find some junk bolted up hardware in your scrap pile.

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