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Tractor Talk Discussion Forum

slow punctures

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charlesmacleod

01-30-2007 07:35:43




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Two of my nearest tyre repair businesses are reluctant to fix two rear tractor tyres because they take about a week to go down, "we would probably be wasting your money"
One must be a thorn , cos it's a hedge cutter , the other is on an all terrain fork lift . I could either ignore them (bad for tyres to be crushed by the rim) or try myself , I have a bead breaker. Do I just inflate the tube till it nearly bursts?? or any other ideas , I keep using them and they never get worse! TIA

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iowa_tire_guy

01-30-2007 19:14:42




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 Re: slow punctures in reply to charlesmacleod, 01-30-2007 07:35:43  
A couple of points to add to the discussion. Number one, twisting wire around the stem will work only if the leak is where the brass stem is molded to the rubber stem. If the leak is in the tube and the air is coming out around the stem trying to stop it there is a losing battle although I have seen many creative methods to try to stop it. If the tire leaks down to where it is just soft and doesn't go completely flat then you would probably have a high pressure leak which means that the hole in the tube is small enough that it only leaks if the tube has more that 10 lbs of air in it. Since this is impossible to do outside the tire then you will not find the leak. If a tire has been in thorns then we replace the tube (if it has one), break off any thorns that come through and give it a good shot of tire sealer (slime type of stuff). We have found that it works most every time. The other posts here also have good info, especially checking the valve core and shrader valve for leaks.

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Janicholson

01-30-2007 15:35:38




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 Re: slow punctures in reply to charlesmacleod, 01-30-2007 07:35:43  
A product with the unlikely name of Slime (in a green bottle no less) seems to work marvelously on slow, and rim leaks. Autozones, NAPA, and other stores carry it. Google search. JimN



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amo

01-30-2007 09:32:10




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 Re: slow punctures in reply to charlesmacleod, 01-30-2007 07:35:43  
I HAVE A REAR TIRE THAT LEAKS DOWN SOME OVER SEVERAL WEEKS, IT IS A TUBLESS AND THE TIRE COMPANY SAYS THAT TUBLESS WILL DO THIS AFTER SEVERAL YEARS OF AGE. TO CORRECT THIS HE SAID TO PUT A TUBE IN IT. I HAVE LOOKED AND HAVE NOT SEEN ANY WATER OR AIR BUBBLES. GOOD LUCK.



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James22

01-30-2007 08:50:57




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 Re: slow punctures in reply to charlesmacleod, 01-30-2007 07:35:43  
We used the cattle watering tank for smaller tubes. For larger tires used a slow running water hose. The spray bottle sounds like a good idea. Reminds me of a personal flat tire/hedge story. Several years ago I was clearing a field and fence line that was recently bought and it had a lot of hedge. Had a loader tractor which I was using very gingerly to consolidate the burning, larger accumulations. Had a lot of small piles scattered around and was loading them on a wagon to deliver to the burning pyres. A fellow engineer was with me and was watching the fire. Unfortunately I was off gathering a distant pile, when he got the great "idea" to use the tractor to push and run over several nearby piles rather than pick them up. Obiviously he didn't have any experience with osage orange trees. I viewed this operation from a distance and frantically tried to get back and stop him. Too late! Had 24 punctures in one front tire and 16 in the other. Only a couple in one rear tire. They were all new tires, therefore replaced the front tubes, patched the rear and spent a lot of time removing thorns.

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msb

01-30-2007 08:18:54




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 Re: slow punctures in reply to charlesmacleod, 01-30-2007 07:35:43  
Be sure to check the area where the metal of the valve stem is bonded on to the inner tube.Years ago that was a problem we fixed by twisting a piece of baling wire around the stem.

If thorns are a problem for you, you can cut an old inner tube and use it as a liner for the good tube, the liner will cause the thorns to break off before they cn penetrate the tube.Or you can buy tube liners from Gemplers.

www.gemplers.com

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supergrumpy

01-30-2007 11:04:45




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 Re: slow punctures in reply to msb, 01-30-2007 08:18:54  
please explain a bit more about this valve stem fix



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msb

01-30-2007 16:32:53




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 Re: slow punctures in reply to supergrumpy, 01-30-2007 11:04:45  
Pretty simple. Wrap a piece of wire around the stem and use a pair of pliers to twist the wire around the stem until tight. Cut off the excess wire.



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supergrumpy

01-31-2007 07:37:04




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 Re: slow punctures in reply to msb, 01-30-2007 16:32:53  
if I'm understanding you, the wire will bring the metal valve stem closer to the rubber tube and eliminate or reduce the leak

if it works you save the price of a tube



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David Snipes

01-30-2007 07:47:23




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 Re: slow punctures in reply to charlesmacleod, 01-30-2007 07:35:43  
The first thing I would do is check the valve core and valve stem insert with soapy water to see if it has a slow leak. When I take the tube out and check it, I don't have a large immersion tank, so I use soapy water in a spray bottle or you can wipe it on the tube with a rag. You will need to inflate the tube larger than it would be in the tire to make a small leak more easily noticed. For tiny leaks you have to be slow and meticulous in your inspection. If you don't find it after covering evey inch of the tube, try again later. If you still have no success,have another person check; he may see what you have missed; or you could try inflating it even more. If that didn't work, I would try some tire sealant. Make sure to inspect every inch of the inside of the tire for anything poking through. Also inpect the inside of the rim for anything sharp.

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