Checking airpressure in WATER FILLED tires.

[ClemBert]

It could very well be that the water I'm seeing is just the small amount of water on the inner side of the valve from wheel rotation. The tires were originally filled by the JD dealer I bought the tractor from.

I think the plan is as follows:

1. Turn wheel so valve is at 12 o'clock position.
2. Jack up wheel axle to remove pressure off of tire.
3. Unscrew Schrader valve from valve stem.
4. Let any air/water out that wants to come out.
5. Lower the axle jack to allow the tire to decompress by 30% and let additional water if any out.
6. Install Schrader valve and jack wheel axle back up.
7. Fill air to 12-15 PSI.

Whadda y'all think about that procedure?

 

[Bird]

It could very well be that the water I'm seeing is just the small amount of water on the inner side of the valve from wheel rotation. The tires were originally filled by the JD dealer I bought the tractor from.

I think the plan is as follows:

1. Turn wheel so valve is at 12 o'clock position.
2. Jack up wheel axle to remove pressure off of tire.
3. Unscrew Schrader valve from valve stem.
4. Let any air/water out that wants to come out.
5. Lower the axle jack to allow the tire to decompress by 30% and let additional water if any out.
6. Install Schrader valve and jack wheel axle back up.
7. Fill air to 12-15 PSI.

Whadda y'all think about that procedure?

Nothing wrong with that procedure, but why take the time to jack up the axle, lower the jack, then jack it up again. I'd just dispense with the jack entirely.

 

[Zebrafive]

If you want less than full, valve stem at 12 O'clock, I would rotate the tire while jacked up to what ever level you want. It would be more repeatable for the other side and the future if you have a tire repair or replacement.

 

[EE_Bota]

If you are low on air, the water will seem to have risen in the tire higher than it would ordinarily be. I would jack it up, so that the tire will not be deflected, and therefore water will fill that additional volume (made available by the lack of deflection of the tread patch.)

With the stem at 12:00, do the blast others talked about to clear the stem. Then press the stem to see if water comes out. Or you may just remove the valve core.

I air the tires to what the manual says. Most times, what's on the side of the tire is the max, not the recommended. I have 4wd though, so it is a bit more critical than some.

Over the years, I find air stays in a filled tire better than an unfilled tire. I think the water is harder to express through the pores of the rubber than air, so the water acts as a bit of a sealant.

 

[Tx Jim]

It could very well be that the water I'm seeing is just the small amount of water on the inner side of the valve from wheel rotation. The tires were originally filled by the JD dealer I bought the tractor from.

I think the plan is as follows:
Whadda y'all think about that procedure?

Did you get this plan from an operators manual? The way I was taught to fill tires with fluid(I did many at a JD dealership) was to put stem at 12 o'clock and fill till level with valve stem. Then set air psi to what OM stated for given load on tractor. Usually if bottom cleats at edge of tire are just beginning to clear ground that's close to correct psi on bias ply tires.

 

[Tx Jim]

Nothing wrong with that procedure, but why take the time to jack up the axle, lower the jack, then jack it up again. I'd just dispense with the jack entirely.

If you don't jack up tire and relieve ground pressure you just be guessing how much fluid you let out. You might have 65% remaining on one side and 50% on the other.

 

[Bird]

If you don't jack up tire and relieve ground pressure you just be guessing how much fluid you let out. You might have 65% remaining on one side and 50% on the other.

I don't see how that could be, assuming the same kind of tires on both sides, and assuming you have the valve stem at the 12 o'clock position on each one when you do it. And assuming the weight on each side is equal so each tire is compressed the same amount when deflated.

 

[JD3520Turbo]

I like the idea of having it jacked up, with stem at 12. Remove the valve and let it drain until stops. Then rotate the stem to the 10 or 2 position if that is where you want it, and let that drain. Then put valve back in and air to proper levels. Should be good to go.

One thing to look at is if you have tubes or not. If not, you will want to keep the fluid/water over the rim at the top, so it doesn't rust. If the rim doesn't ever come in contact with the air, then it won't rust.

12 to 15 psi should be the right amount of air, unless you have very heavy loads in the back.

 

[dklistul]

Seems to me, you could just put the valve stem at 12:00, remove the valve core and let the air and water out until the tire is flat. If you do this on both sides, and get water out of it until the tire is flat, you'll have equal amounts of water in each tire. The "flat" part of the tire would define the amount of space you have for air. Essentially, assuming that the tire is flat, the air is out and the rest of the tire is filled with water, you'd then have about the right amount to keep the top of the rim covered at all times when you air the tires back up.