SPECIAL TIRE GAGE?

escavader · Oct 6, 2005

Do i need a special tire gage to check air pressure in my loaded tires?My regular ones dont work right.Iam putting the valve stems at 12 oclock first,is that correct?
ALAN

elad · Oct 6, 2005

Yes, you should have a special tire gauge for loaded tires.
12 o'cock on the valve is right. Jack up the tractor rear
tires so they do not touch the ground when measuring
Pressure.

skipmarcy · Oct 7, 2005

With the gauge I have, doesn't matter what position the tire is in to check it, but it is spring=loaded and you have to check the pressure with the gauge on the valve stem, it retracts by itself when you remove it from the pressure. The spring action of course expels the fluid and the innards are obviously alcohol proof - I've had mine for about 5 years and still works like a charm, got it at my Co-op for about $6. No need to lift the tire off the ground, this does absolutely nothing.

Bird · Oct 7, 2005

Alan, at almost any auto parts store, tractor dealer, and I think even Walmart, you can get an "air/liquid" tire gauge to use instead of just an "air" gauge. They don't cost much more than regular air tire gauges. Personally, I did like to get my valve stem at 12 o'clock, and even give each one a very quick and brief blast of air to clear liquid out of the valve stem before checking the pressure, but of course I had an air compressor handy all the time.

SteveInMD · Oct 7, 2005

( Jack up the tractor rear
tires so they do not touch the ground when measuring
Pressure. )

Try it both ways, on the floor and jacked up. I think you wont be using the jack for this any more.

elad · Oct 7, 2005

Had my tires on my 4110 loaded with calcuim. Put valve at 12 o'clock with tires on the ground. When I tried to read pressure
fluid came out. Raised tires off the ground tried again to read pressue and no fluid came out. Could only attribute this to the weight of tractor, tires, fluid, BB etc. Seems logical to me that the weight had something to do with fluid escaping.
Any other explanation would be appreicated.

escavader · Oct 7, 2005

Thanks guys,
went to napa and bought one today.Ihad beet juice seeping around the rear rim a little,as i posted elsewhere.It was because i was down to 5 lbs.Loaded tires are funny,i never even noticed it was slack,kept seeing slight wetness around the edge of the rim.Hope i aint got a pinhole somewhere.I change my oil often,but never checked the tires,figured they were ok as long as they were not slack
ALAN

skipmarcy · Oct 8, 2005

Your valve stem will hold a good little dab of fluid even after it is rotated to the 12:00 position - if you momentarily depress the core to expel that fluid, you should then get just air unless the tire is filled way too high. The volume of your tire gauge isn't that much and it might get fluid for the first couple readings, but should clear-up on the 3rd or 4th try if you don't first expel the fluid by depressing the valve core. The tire on the ground or off will read the same pressure, this is a fact, not someone's guess.

Nightrain1 · Oct 8, 2005

( ( Jack up the tractor rear
tires so they do not touch the ground when measuring
Pressure. )

Try it both ways, on the floor and jacked up. I think you wont be using the jack for this any more. )

I don't know about this one. We want a certain tire pressure under real working conditions, right? When I am useing my tractor, the rear end is'nt up in the air, well at least 99.9% of the time. /forums/images/graemlins/grin.gif

slowrev · Oct 9, 2005

tires will read more pressure the more load is placed on them. I have put 35 lbs is some small trailer tires and after overloading the trailer had over 45 lbs ! They did hold though /forums/images/graemlins/smile.gif

However with that said I believe all vehicles tire pressure is intended to be checked when supporting the normal weight of the vehicle.

Ben