Valve stem repair without tire removal?

[Farmcat]

Howdy folks, 1st Post here regarding my first tractor a bx2360.
Last weekend one of my front tires lost pressure, no big deal, cleaned out the bead and refilled it.
Since I had the air pump out I decided to check the rest of the tires.
I was trying to bring the rear up from 10 psi to 15 and the metal threaded part of the stem shot out from the rubber part and I discovered that the previous owner had filled the rear tires with some sort of terrible tasting liquid.
I put it back in and currently have it holding in well with a tiny clamp.
I've never seen this happen to a valve stem before, I'd rather not drain and have to remove and remount the whole tire to fix it properly.

What do y'all think?

 

[old and tired]

google "replacement valve stems"... there was a thread about them not too long ago...

 

[AM28]

I am very good at replacing valve stems without removing the tire. My wife has a bad habit, short Asian girl, of using the wheels and tires as a step to get up to our boat when it’s on the trailer. I have had to replace three valve stems this summer because she stepped on them I just break the bead on one side, push it down past the valve stem, and replace the valve stem, pretty simple.

 

[Lil Foot]

 

[jimh406]

If the rear tires are filled, they only have a small amount of air in them. Rotate the wheel so the valve is at the top and jack that wheel up. It shouldn't be a big deal.