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  1. #1
    Gold Member
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    Apr 2008
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    447

    Default Valve Stem issue

    I noticed the left rear tire had a slight wrinkle at the bottom after mowing yesterday. I went to check the pressure and a steady stream of fluid came out as soon as I took off the cap. I already had the valve stem at the top, as I knew the tires were filled with some sort of fluid. I tried to tighten the internals of the valve stem, and that helped for about 3 seconds. I'm going to jack up that corner of the tractor, with the valve stem at the top, and replace the valve stem internals.

    Will any valve stem from the auto parts store work, or does it take something special? I'm not sure what type of fluid is in the tires. What came out was clear. The only smell was the old stagnant tire air smell. This is on a Ford/NH 3230 with Goodyear Dynatorque II 12.4-28's.

    Keith

  2. #2
    Veteran Member Gordon Gould's Avatar
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    Apr 2007
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    2,007
    Location
    NorthEastern, VT
    Tractor
    Kubota L3010DT, Dresser TD7G Dozer

    Default Re: Valve Stem issue

    I can't help you directly with the internals question but I do know that if you have filled tires you should use an all brass valve stem. This is because of a problem with adhesives used in the rubber valve stems being softened by some tire fillers. I don't know if the core, or inards as you call them, of a brass stem are any different than the inards of a rubber stem but you could check that.
    Last edited by Gordon Gould; 05-27-2012 at 08:40 PM.
    "If you're not making any mistakes then you're not doing anything"

    L3010DT, Farmi JL290 Winch, ATI Grapple, BearCat 5" Chipper, 6' Rear Blade,
    7' Sickle Bar, 5' Land Plane Grading Scraper, Dresser TD7G Dozer

  3. #3
    Elite Member Don87's Avatar
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    May 2010
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    4,226
    Location
    SW Pa.
    Tractor
    Massey Ferguson GC2400

    Default Re: Valve Stem issue

    Do you have tubes in your tires. If the liquid is clear, it could be calcium or salt water. Does it have a salty taste?

    Most tires with caclium, or salt have tubes inside as the chemicals are very corrosive.

    Lot's of people in southern USA use just plain nwater as it doesn't freeze there often, or for more than a couple days.

    Lot's of people use a methanol mix also, and that would be clear also(IIRC).

    Some tractor tires appear to be tubeless...........although they actually have tubes.........that's why I'm asking the questions.
    Don

    MF GC2400, FEL, 60in.MMM, 5ft. Cultivator, Single Bottom Plow, Bush Hog RTC48 tiller, MF 2360 front mount snowblower, 5ft backblade. BXpanded Piranha toothbar.

  4. #4
    Gold Member
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    Apr 2008
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    447

    Default Re: Valve Stem issue

    Quote Originally Posted by Don87 View Post
    Do you have tubes in your tires.
    The valve stem looks like it is sandwhiched on the wheel as there are external threads and a threaded ring, so I believe it is tubeless.

    I think I'm going to catch a small amount of the fluid and stick it in the freezer to see if it freezes. I'm in southeast VA and we see temps in the 20s in winter, occasionally in the teens. The fluid was likely installed by the local Ford/NH dealer when it was bought new by my wifes grandfather in (I think) the early 90s.

    Keith

  5. #5
    Member topbuilder's Avatar
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    May 2012
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    40
    Location
    Lone Stare State
    Tractor
    New Holland 345D shuttle, Rayco RG-50, Rayco RG-1642, Southern Tractor (Hinomoto) E-280

    Default Re: Valve Stem issue

    Buy a tubeless valve stem and put the new core in your stem. If it works you are good to go. Add some air or if you have a water adapter you could add water. Just be sure the stem is at the top when you add water so you can bleed off air as needed.

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