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  1. #1
    Silver Member
    Join Date
    Mar 2006
    Posts
    218
    Location
    South Central KY
    Tractor
    Kubota B3030HSD

    Default Tire valve stem gone!

    Here's one for ya. Yesterday I'm loading up the FEL with some fallen branches, etc. and notice that the front tire looks low (B3030 w/R4's). Thinking I need to fire up the compressor and add a little air, I take a closer look and notice that the bead seems to be separated from the rim; little closer look and notice that the valve stem is completely missing! ****, all loaded up and no where to go! More importantly, where did the valve stem go and how long have I been driving around without any air? It's not inside the tire and I haven't seen any deer killed by flying valve stems. Anyone had this happen to them? It's always something...

  2. #2
    Silver Member Dishpointer's Avatar
    Join Date
    Apr 2006
    Posts
    155
    Location
    Kansas
    Tractor
    Ford 1600

    Default Re: Tire valve stem gone!

    If your front tires have tubes installed then the tube and valve stem probably just rotated inside of the tire. You might be able to rotate the tube/stem back in place without removing the tire. If you don't have a tube you will have to unmount at least 1 bead from the rim to install a new stem.

  3. #3
    Silver Member DanR67's Avatar
    Join Date
    Feb 2004
    Posts
    241
    Location
    N. Central Massachusetts
    Tractor
    Kubota B7610

    Default Re: Tire valve stem gone!

    FrogLick -

    A few years back I was widening a break in a stone wall with a JD rental unit - working some rocks free with the FEL - all of a sudden I hear loud hissing....

    As the tractor had 4WD engaged - and I was driving into the pile of rocks - one of the front wheels spun against some of the rocks I'd loosened up - and completely sheared the valve stem off the rim!

    I'll guessing you won't find the stem inside the wheel....I'm thinking you also spun a wheel while against a branch / log - and (accidentally) lost your valve stem that way.

    I notice that my B7610 has half-moon / full circle "reinforcements" welded to the rims to protect this from happening.

    Hope that helps,

    Dan
    Kubota B7610 / LA352 FEL / 54" MMM / 50" 3PH Snowblower / Markham Toothbar

    My B7610 Pictures

  4. #4
    Silver Member copperhead1967's Avatar
    Join Date
    Jun 2005
    Posts
    219
    Location
    greensburg PA
    Tractor
    kubota BX22, Cub ZForce S 48 inch deck

    Default Re: Tire valve stem gone!

    I just replaced a valve stem but with a different issue. I too must have spun the tires in some mud or what have you. I had a slow leak in the front of my bx22. I took the tire off and dunked it to find the leak . I noticed a small leak at the valve stem where it goes into the rim. I rotated the stem and the leak went away, them rotated it a little more and the air was coming out fast. $4.00 later all is well. The only concern I have is the new stem is a bit longer and may get caught easier. Guess its not too bad first tire issue in 4 years and 410 hours on the machine.

  5. #5
    Gold Member Casco1's Avatar
    Join Date
    Aug 2004
    Posts
    422
    Location
    Eastern Mass
    Tractor
    Kubota L series

    Default Re: Tire valve stem gone!

    Quote Originally Posted by DanR67
    FrogLick -

    A few years back I was widening a break in a stone wall with a JD rental unit - working some rocks free with the FEL - all of a sudden I hear loud hissing....

    As the tractor had 4WD engaged - and I was driving into the pile of rocks - one of the front wheels spun against some of the rocks I'd loosened up - and completely sheared the valve stem off the rim!
    I had the same exact thing happen to my L3710 front wheel valve stem sheared off by hitting a rock during a turn.
    Two good things
    1 It was a front tire
    2 This is where I first realized my tractor had built in jacks, made a quick job of it.

  6. #6
    Super Member George2615's Avatar
    Join Date
    Feb 2005
    Posts
    5,510
    Location
    Central Square, NY
    Tractor
    LS XR3037HC

    Default Re: Tire valve stem gone!

    Does your wheel have valve stem guards? If not you want to make some and tack weld them in place to prevent a future occurrence.
    Attached Images Attached Images

  7. #7
    Gold Member Casco1's Avatar
    Join Date
    Aug 2004
    Posts
    422
    Location
    Eastern Mass
    Tractor
    Kubota L series

    Default Re: Tire valve stem gone!

    Quote Originally Posted by George2615
    Does your wheel have valve stem guards? If not you want to make some and tack weld them in place to prevent a future occurrence.
    My machine does have valve stem guards. Still didn't save me, somehow I just happened to turn the tire the right way, or maybe I should say wrong way.

  8. #8
    Veteran Member DmansPadge's Avatar
    Join Date
    Oct 2004
    Posts
    1,678
    Location
    Orange, TX
    Tractor
    Kubota B2620, Toro 2000 Series Z Master

    Default Re: Tire valve stem gone!

    A pipe nipple and a threaded cap covering the stem is about the best way to prevent damage to it. You could also use a metal bolt-on valve stem. They can definately still be broken off.... but they are tougher than a rubber stem.

  9. #9
    Silver Member
    Join Date
    Mar 2006
    Posts
    218
    Location
    South Central KY
    Tractor
    Kubota B3030HSD

    Default Re: Tire valve stem gone!

    Here's the update. I took the tire to a tire shop to have a new stem installed and the bead reset. As the guy is placing the wheel in the back of my truck I notice a bubble in the side wall next to the rim on the inside where I wouldn't have noticed it before. I can deflect it a little and it "burps" the air out of the bubble then slowly refills until it relieves itself again. Looks like I have a defective tire with ply separation and it's been slowly leaking all along and finally got low enough that I managed to break the bead seal. Only about 20 hrs. on these tires so I'll talk to my salesman tomorrow and see what he can do for me. The rims do have stem guards and there wasn't anything on the inside of the (tubeless) tire so who knows where that stem went.

  10. #10
    Platinum Member Berniep's Avatar
    Join Date
    May 2005
    Posts
    610
    Location
    Greensburg IN
    Tractor
    2005 BX23

    Default Re: Tire valve stem gone!

    Quote Originally Posted by copperhead1967
    Guess its not too bad first tire issue in 4 years and 410 hours on the machine.
    WOW, do you ever take it off the road
    I have slime in all four tires and I only have 95 hours on mine.
    Bernie

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