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Tractor Talk Discussion Forum

bad valve stem, fluid in tires...

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Tom Lendt

05-07-2004 06:24:51




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Here's the problem; I have a damaged and leaking valve stem on a 38" rim filled with chloride. I parked the tractor with the stem at 12 O'clock and put a jack under the axle to buy some time. My question is, what is the easiest way to get a new stem in there w/out losing the juice? Any help appreciated, thanks in advance.




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Clean John (Or)

05-09-2004 20:00:17




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
On the subject of tire weight compounds--- does any one know if you can still get/use powdered red lead as a sub for calcium cloride ? ? I forget the actual tire size but they were 26" wide and were over 8 feet tall mounted on a 500 Hough rubber tired dozer that I operated at Fall Creek dam in Or. for a year. Think abt 1963 ? The tires (4) were loaded with red lead and when one blew it was a major red cloud disaster (Not the Indian Kind either) but no rim rust problems. Think they held about 1000 lbs each. Dont know if you can use it nowadays. Any one else been around this process ? Oh by the way it had the same engine they used in Big Red the tractor the Williams boys in Mt. have /Had? with bigger injectors. John

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wdTom

05-08-2004 18:12:37




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
Others have hinted at it but noone has come out and told you, You must take the tire apart, if any calcium is between the tube and rim it will rot the rim out and you will be buying a new rim. Take the tire off the rim, wash the rim with much water, let dry.If you use your tube, wash it with much water too, let dry. Assemble with a good tube, your repaired tube or a new one. If the tube doesn't leak and you are carefull you can put the calicum back in. DO NOT GET ANY CALCIUM BETWEEN THE TUBE AND RIM.

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kjm

05-07-2004 19:26:12




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
Tom, nobody has asked if you are sure it is the stem or is it leaking between the stem and the rim,if it is you have a flat tire and the tire will need to be broken down and the tube patched.(the fluid will leak in to the tire and can only get out around the valve stem hole) After you get the fluid out, a dull wood splitting maul(to break the beads) and two tire irons, and if you have never done this or even seen it done figure 4 or 5 hours.(a pro can do it in an hour) The last one I had with no fluid cost me 35.00, my time is worth more than that.

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Bus Driver

05-07-2004 17:06:04




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
Based on my experience, the advice posted below by Bob, Paul, and nwb have always worked well for me.



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buickanddeere

05-07-2004 13:29:27




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
Unless the liquid rust maker in the tube is really required, this would be a good time to get rid of the nasty stuff. A 38 won't have a loader on it and won't make enough power to exceed the 115lb to 145lb tractor weight per pto HP. She will be much perkier to operate without dragging the extra weight. Easier to haul to shows too. And no more corrosion suprises.



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Tony B.

05-07-2004 14:30:39




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 Re: Re: bad valve stem, fluid in tires... in reply to buickanddeere, 05-07-2004 13:29:27  
There are thousands of tractors with loaders on farms equipped with 38" tires, it probably is the most common diameter. A 38" tire can range anywhere from 11.2 to 20.8 inches wide. If you need the extra weight, then you need it, especially if the tire is on the smaller side for the horsepower. I have 13.6X38 bias tires on a 70 horse tractor and I didn't replace the calcium, now I have some slippage If you have radials you may get away without added weight, but with bias tires on a working tractor 9 times out of 10 you will need added weight.

Tom-You are not giving enough info. If it is in fact a tubeless tire(not likely) then you will have to break the bead.
Is it just leaking from the core? A lot of times all you have to do is remove the old core and put a new one in and you will be OK. I put a little anti-seize on the core before screwing it in. It really isn't a bad idea to replace the cores every year or two, whether leaking or not.

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buickanddeere

05-08-2004 12:15:24




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 Re: Re: Re: bad valve stem, fluid in tires... in reply to Tony B., 05-07-2004 14:30:39  
Don't know how but I got thinking 1938 instead of 38 inch rim. Maybe it's better not operate a computer either when tired and after a couple of drinks?



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Bob

05-07-2004 09:53:45




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
All the advice you have been given here is good. The older style rear tractor tubes usually had a 2 piece valve, different from the valve on a smaller tube. If you are lucky, you can get away with replacing just the outer part. There are different styles. I have seen them with the male and female threads reversed. Good luck.



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Peter

05-07-2004 09:13:15




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
I had the spring inside the stem corrode out on me, bot 2 new stems at Tractor Supply and swapped them both in without too much problem

while its jacked up like you have it, let the air pressure out first and hold the tube end with some old pliers and unscrew the old stem, if you are lucky, it will unscrew without ruining the threads on the tube

calcium solution is nasty feeling stuff/will kill whatever it drips on so "DO NOT" do it next to the flowerbeds

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Polish Mike

05-07-2004 08:57:12




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
I'd be real surprised if you didn't have an inner tube on that tire, since you have calcium in it. Otherwise, what 's keeping the calcium chloride from immediately rotting out your wheels ? You have to drain the tire (save the liquid in a barrel for re-use), break the bead, put a new inner tube in, and refill it.



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JMS/MN

05-07-2004 08:06:24




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
You already did all the right things. The fluid should not leak out- if it does, the tire is overfilled. It should not be more than 3/4 full- to allow enough room for air in the tire.



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Tom Lendt

05-07-2004 08:12:31




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 Re: Re: bad valve stem, fluid in tires... in reply to JMS/MN, 05-07-2004 08:06:24  
OK, but my real question is, do I have to break the bead to pull a new stem through from the inside, or is there another way?



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JMS/MN

05-07-2004 12:16:34




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 Re: Re: Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 08:12:31  
Like Bob said, the tractor tube has a two piece stem, and you likely need to just replace the outer one. A visual exam of what is sticking out will verify that. I have never seen a tubeless rear tractor tire with fluid in it. Doesn't mean it can't happen, but in the past 30+ years, with maybe 15 tractors, I've never seen it. If I had one, I would put a tube in it. I don't like tubeless on any farm equipment, and our farm has upwards of 300 tires on it. I quit counting years ago when it went over 200. When any tubeless goes flat, I put a tube in it.

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paul

05-07-2004 16:48:48




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 Re: Re: Re: Re: bad valve stem, fluid in tires... in reply to JMS/MN, 05-07-2004 12:16:34  
I've got tubeless on my 7700 with CC. Tire man said to leave it that way now, as the CC is on the iron. Without O2, it doesn't rust. With a tube, more O2 would leak in & make it rust worse.

His thoughts on the matter. Wish it were tubed from the beginning, but the rim actually looked good, no more rust than any other 25 year old rim.

--->Paul



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RZ(WA)

05-07-2004 09:36:49




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 Re: Re: Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 08:12:31  
As Polish Mike mentioned, There is probably an inner-tube in which case you'd have to break the bead remove and replace the inner-tube. Most drive tires will have an inner-tube since tire pressures are not great enough to keep the bead sealed to the rim without one AND many have been filled calcium. If by some ODD chance there is no inner-tube, you shouldn't need to break the bead. Pull up or slightly bend the stem with a pair of pliers and look where the base of the stem meets the rim, there should be definite groove where stem seats into the hole in the rim. It's a struggle to replace a stem from the outside (you may have to cut off the base of the stem), but it can be done. You might be able to use something like a flat head screwdriver and lots of soap to slick it up to push the new stem in and get it seated. Be careful to not mess up the threads at the stem base. I'm not saying this is the only way but it has worked on smaller tires and rims,,,lucky maybe. If your tire doesn't have an inner-tube, what keeps the calcium from eating and destroying the rim ??

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nwb

05-07-2004 06:39:23




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 Re: bad valve stem, fluid in tires... in reply to Tom Lendt, 05-07-2004 06:24:51  
Get a new stem ready. Take out the old stem. Put in the new stem. Wash everything real good with soap and water.



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Jerry

05-07-2004 16:50:49




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 Re: Re: bad valve stem, fluid in tires... in reply to nwb, 05-07-2004 06:39:23  
Call a farm tire repair service. It will be cheaper in the long run. My experience.



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Ray,IN

05-07-2004 20:58:34




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 Re: Re: Re: bad valve stem, fluid in tires... in reply to Jerry, 05-07-2004 16:50:49  
Ditto to what Jerry said. I've removed/reinstalled filled rear tires(when I was young, strong, and dumb) and it's a lot of weight to handle. It is sooo much easier to have the farm tire store guy do with the proper equipment.



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