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Tractor Talk Discussion Forum

Seating bead on rear tire

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super99

11-27-2006 16:51:44




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Had a flat on JD 70 rear tire, Got her broke free and off and patched tube. Put it back on, and having trouble getting bead to seat on rim. Now is the time to tell you that they are 15.5-38 tires on a rim that had 12 or 13 inch tires originally. Kinda pulls the sidewalls in a little bit. I soaped rim and tire up and put in 20 psi and it didn't seat all around, lacked about 2 1/2 to 3 ft from seating all the way around. Let air out and got more soap and little bit of water and pushed in bead and smeared it good. Aired back up to 25 psi and it's almost seated, lacks about 1 1/2 ft on each side a little thicker than a pencil from seating like it should. How much air pressure can I put in it without blowing up tube? Can't remember from last time I did this, but remember that I blew it up pretty tight and let it set for several days before it poped out. Yes, I know the tires are too big, but can't afford a new set right now, and when it seats, it'll do what I want it to. Any ideas on a better way to do this? Thanks in advance, Chris
If you hear a loud noise, it either blew up or seated itself.

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1945 A

11-28-2006 05:45:13




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 Re: Seating bead on rear tire in reply to super99, 11-27-2006 16:51:44  
Here"s a thought, and that"s just what it is, but, I"m reminded of a time when there used to be a small tube like tool, that was used to first spread the sidewalls of tires. You put this device around the middle of the tread, and with an adjustable D ring/strap, you pulled it tight, then inflated the tool, and it would force the sidewalls out, then, as the tire was being inflated, released the air in the tool.
Anyway, just a long explanation of the possibility here---wrap a cable or chain around the middle of the tractor tire tread,(tire deflated), then, with a come along, tighten the cable/chain to spread the tire, with plenty of lube, it might accidentally seat on the rim, then air it up.
Like I said---just a thought.
Good Luck!

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old

11-27-2006 18:58:41




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 Re: Seating bead on rear tire in reply to super99, 11-27-2006 16:51:44  
Most tires will have a safe limit printed right on the side of the tire. Most will say 30-35 PSI is max. Cleaning the rim is a most and also a good bit of lube. Try to get the tire bead to come up even all the way around and it will seat better. If it seats on one side and the other side is down it has to push harder to get it up all the way around.

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A Gusta

11-27-2006 18:52:20




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 Re: Seating bead on rear tire in reply to super99, 11-27-2006 16:51:44  
A tire needing the bead seated, and especially if being stubborn, should be done in a "cage" device.

I have done(many years ago)on a tire road service used a clip on tire chuck and a couple of extension hoses.

With the two hoses disconnected from each other, clipped on a clip on air chuck on the wheel, then halfway to the compressor connected the two hoses at a coupler, inflated from a distance till bead seated, or I felt I had enough air in it, then uncoupled quick connector and allowed to deflate before nearing it again.

You can also add a pressure regulator in the equasion if you desire to set a limit.

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iowa_tire_guy

11-27-2006 18:40:04




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 Re: Seating bead on rear tire in reply to super99, 11-27-2006 16:51:44  
The thing to remember is that if it isn't coming all the way out then the problem is 180 degrees around the tire. I would deflate the tire, put the part that isn't coming out on the bottom. Then push the bead from the rim lip all the way around but don't let the top part drop into the drop center. A good substitute for tire lube is vegetable cooking oil. It is impossible to use too much lube. Then re-inflate the tire. The key is to get the bead loosened up all the way around so it can shift on the rim and center itself. Plan B is to call the tire guy. Good Luck

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RodInNS

11-27-2006 18:21:41




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 Re: Seating bead on rear tire in reply to super99, 11-27-2006 16:51:44  
Keep lots of soap on it, bring it up to 35 psi... If that doesn't work, then try tapping the tire with a bead maul or big hammer. Hit near the bead starting in the area that is seated, working into the area that's not seated. I've also had more pressure on them, but 35 psi is generally the maximum recomended to seat the bead.... so I'll leave it at that...

Rod



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sunny 4 acres

11-27-2006 18:07:28




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 Re: Seating bead on rear tire in reply to super99, 11-27-2006 16:51:44  
I never seated a bead on a tractor tire but watched the local tire retreader do it. He got it to maxium safe psi put the tire on the tractor and went around the yard several times popping the clutch out. I guess the shock of the tractor will help seat it. just remember use good judgement.



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Ron 1456

11-27-2006 17:04:15




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 Re: Seating bead on rear tire in reply to super99, 11-27-2006 16:51:44  
You can go up to 35 psi when seating the bead if the tire is good. If the rim was rusty you may have to clean it up. If you have a tire repair shop close by see if he will let you have a little of his Murphy's tire lube. It will work better than soap.



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