tubeless valve core

Dan in North Houston · May 10, 2021

One of my tractors has tubeless tires on the back, and yesterday I broke off the end of the air valve. It has the TR618A type valve cores where you can add fluid. The valve stem is not seated on a flat part of the rim, but rather on one of the profile steps. So the rubber grommet is profiled to fit in that area rather than on a flat surface. I was able to re-use the rubber grommet with a regular tubeless valve stem, and so far it's holding. I'd like to get a spare, but all of the internet sources I see just have the regular grommet. Anyone have a source?

Russ from MN · May 10, 2021

I have broken off a couple on our JD4600, because I use it primarily for brush cutting. I just put in rubber automotive ones, but my rims might be a little flatter than yours. I have no intention of ever putting fluid in the tires, I have wheel weights. One time I broke one off a rear when I was out in the woods a ways, as soon as I realized what happened I jumped off and whittled a wooden plug and drove it in. That allowed me to get the tractor out to the end of the road where I could get my truck to it.

Bob Bancroft · May 10, 2021

I've not seen such. Are you sure it wasn't a regular valve assembly where the seal conformed to the rim, and then held that shape?

caterpillar guy · May 10, 2021

If you didn't break it off at the rim they screw out and can be replaced with the new screw in section. If broke at the rim then yup new stem time. Though I've never seen one that was not on a flattened section of the rim. Are you sure it didn't bend the spot were the stem sets so it looks like it was not flat.

fixerupper · May 10, 2021

Have you owned this tractor since new? If it is just new to you someone in the past might have drilled that hole and got it wrong. Why am I thinking this? Welll, hmmm! I once had to weld the hole I drilled wrong back shut and drill another one in a flatter spot.

Dan in North Houston · May 10, 2021

Both rear rims are the same, the hole is drilled right in the step, and the rubber grommet is contoured to fit. The rubber part is much thicker than the one I showed in the photo, it is not a case where the rubber reshaped itself to fit.

Dan in North Houston · May 10, 2021

Pretty sure, not only is the original rubber grommet contoured to fit the corner it sits in, but has about 5X more rubber in it than the one in the photo I attached.

Jo Bird · May 10, 2021

Does this look like what you are looking for ???
https://www.millertire.com/products/tire-supplies/valve-stems/tr501-tubeless-valve-stem-1-5/

Dan in North Houston · May 10, 2021

that's not it, but that has the thickest rubber grommet I've seen, it might work.
thanks

DoubleO7 · May 10, 2021

Per the Haltec Corp. website, the TR-618A and TV-618A are the same.

Maybe contact Haltec directly to find the valve you describe.

J.Wondergem · May 10, 2021

Here's the one my Son inlaw used on his tractor. He didn't have to break the bead with this one.

Sorry. I cut off the name. QuikStem.

tubeless valve core

Dan in North Houston

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Russ from MN

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Bob Bancroft

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caterpillar guy

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fixerupper

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Dan in North Houston

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Dan in North Houston

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Jo Bird

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Dan in North Houston

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DoubleO7

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J.Wondergem

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