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Old 11-06-2019, 08:52 PM   #1
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Broke bead on tire. How do I set it?

I did something stupid.


Was prepping interior floor for paint using a power washer, & with the bus gutted, all the water was running forward instead of back. So I got the genius idea to level it out by deflating the rear tires. Long story short, one of the inner tires on the rear axle broke the bead.


Any ideas on how to get it to set? All others are fine & back to proper pressure. But even w/ a big compressor the air's just pouring out the gap between tire & rim. If I had it off the bus I'm sure I could get it, but...
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Old 11-06-2019, 09:00 PM   #2
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im assuming youve tried big compressor big hose and the valve stem core removed?

its tough on an inner tire because you cant be next to it to try and hike it up on the rim.
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Old 11-06-2019, 09:07 PM   #3
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I don't know much about it but I have seen folks use a propane torch, not lit, to put propane in the tire. Then used a cigarette lighter to set it off.

The other method I have seen using a special air tank with a large outlet that filled the tire very quickly and set the bead.

Personally, I keep two tools on hand for tire problems. A cell phone and a credit card. I don't have the physical ability to wrestle around 22.5 or 24.5 tires and wheels. Up until about six months ago one tire and wheel on my truck weighed as much as I did.
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Old 11-06-2019, 09:08 PM   #4
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Originally Posted by cadillackid View Post
im assuming youve tried big compressor big hose and the valve stem core removed?

its tough on an inner tire because you cant be next to it to try and hike it up on the rim.
I could try a larger hose (3/8 now), but everything else I did.
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Old 11-06-2019, 09:17 PM   #5
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Originally Posted by PNW_Steve View Post
I don't know much about it but I have seen folks use a propane torch, not lit, to put propane in the tire. Then used a cigarette lighter to set it off.

The other method I have seen using a special air tank with a large outlet that filled the tire very quickly and set the bead.

Personally, I keep two tools on hand for tire problems. A cell phone and a credit card. I don't have the physical ability to wrestle around 22.5 or 24.5 tires and wheels. Up until about six months ago one tire and wheel on my truck weighed as much as I did.

Yeah... I'm not filling the tire with anything flammable. I like all the parts I've got at the moment



If I can't do it with what I've got (30 gallon compressor), might have to use the last tools you mentioned.
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Old 11-06-2019, 09:22 PM   #6
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Might save a few geeders if you take the wheel/tire off and bring it to a tire shop to have it reset.
Good time to check the tire closely for dry rot while its off, too...?
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Old 11-06-2019, 09:38 PM   #7
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You are going to have to pull the wheel to reseat the tire safely. There are several methods that can be used once the wheel is off the bus.

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Old 11-06-2019, 10:05 PM   #8
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Yeah... I'm not filling the tire with anything flammable. I like all the parts I've got at the moment



If I can't do it with what I've got (30 gallon compressor), might have to use the last tools you mentioned.
Which is why I didn't recommend this to you. Though I have done it many times, and seen it done many times and it has never turned out like everyone makes it sound like it will everytime. But I understand the implications.
On a bus tire this big, I wouldn't think twice about getting the can of starting fluid out and being back on the road in minutes.
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Old 11-06-2019, 10:13 PM   #9
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Try a big ratchet strap around the circumference of the tire. I've done that with lots of tires never had to try it on anything huge yet.
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Old 11-06-2019, 10:15 PM   #10
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It's not hard (necessarily). Being an inner definitely makes it challenging.. hopefully the inside bead is the one that slipped out, rather than the bead that's facing the other tire.

First thing you HAVE to do is pull the valve core. You just can't get air into the tire fast enough with the core in place.

Next is to get the weight off that tire. Best thing is to use a jack to lift that end of the axle. Some would suggest driving the one inflated tire up onto wood blocks or something. That'll put more load on that tire.. although realistically, that tire is already carrying all the load anyway so what difference does it make..?

Lubricating the bead makes a big difference. I have a gallon jug of "slip tac" lube I bought years ago. Maybe you could take a little plastic bowl to a tire shop and beg them to give you some lubricant, or search online and figure out a substitute. IIRC liquid dish soap isn't good for the rubber but I'm not sure.

Get a clip-on air chuck, or an assistant with a strong hand and plenty of patience. They'll be holding that chuck onto the valve stem for a looong time.

With all the preparations made the process is this. Lube the bead and the shoulder inside the wheel as well as you can. Clip the chuck onto the valve stem. While air runs into the tire, manipulate the tire to minimize the sound of air leaking out. If you're living right (or lucky, or whatever) air will go in faster than it escapes, pressure will build inside the tire, and the bead will slowly slide back into place and the air leakage will stop.

If that doesn't work you can use a bicycle inner tube to ease things along. I used a tube from a 26" wheel when I did this. Inflate it just enough to give it form, lubricate it, and tuck it into the gap between the tire sidewall and wheel. It'll dramatically reduce the air leaking out of the tire. Sometimes the tube pops out of the gap between the sidewall and the wheel as the bead moves into place, but more often than not the tube getting pinched in the gap. When that happens it's a delicate balance between adding (or even removing) air in the tire, tugging the tube out of the gap, pushing it back in to limit the air escaping..

As soon as the bead is in place disconnect the air chuck -- don't let it build any more pressure than necessary. You'll get lots of air blowing back in your face because the valve core isn't installed. Carefully insert the core into the valve stem and re-install it. The rushing air will send it flying if you lose your grip on it.

After the valve core is installed you can re-inflate the tire. I like to set the air regulator to the pressure I want in the tire, clip on the chuck, and walk away to do something else away from the blast zone.
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Old 11-07-2019, 07:14 AM   #11
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Family wagons way is a reasonable and safe way to do it. I myself prefer to have the wheel and tire off the vehicle to work with. If off the vehicle and one bead is still holding then put the tire flat with the good bead down. then put wood blocks around the outer edge of the tire so that it is holding it off the ground. Weight ( i just stand in the middle of it) can then be put on the rim and this will push the tire closer to the rim often enough to reseat the bead while putting air in , again no valve in for this. I really would say to use weights of some sort rather then yourself. Once the bead reseats, continue as Family Wagon has suggested.

As for useing a ratchet strap that works great on non belted tires, like atv tires or tractor tires. Steel belted radials it is less effective on.
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Old 11-07-2019, 10:19 AM   #12
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Thanks so much, guys! Gonna go to war with it today if I can find a clip-on chuck locally. I'll let you know how it goes.


Thankfully I already have a bottle of proper tire lube. I used to do a lot of motorcycle tires. But never 'on' a vehicle, and never when the vehicle was a bus!
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