Tires B7500 Filled Tires

[Anonymous Poster]

I've read the previous posts on filled tires, and I *think* I have this right, but if I'm missing something, I'd appreciate it if someone could let me know.

I got by B7500 two weeks ago, and the dealer had the tires filled. Yesterday I decided to check the tire pressures. I moved the tractor until the valve stems were at 12 o'clock, gave them a quick shot of air to clear any liquid from them, and put my pressure gauge on. Water (with calcium chloride, I'm sure) came out.

The pressure was at 35 psi, so I bled the stems until they dropped to 15 psi, and during that entire time no air came out -- only water. Once I got them to 15, I pumped air in to bring them to 20 psi (which took just few seconds, since water doesn't compress).

Looks to me like the dealer's tire servicer filled them completely with water. I thought I'd call him and bring this to his attention, but wanted to be sure I wasn't missing something first.

Also, I figured the way to get the right amount of water in the tires would be to position the stems at 12 o'clock, jack the rear end up so there's no weight on them, pull the valvestems, and let the water drain, then replace them and inflate to about 15 psi. Does that sound right, or is there a better method?

Thanks for your help.

 

[Pks]

Banjo,

What you are thinking is just about what is written in my Kubota manual; for the B2400. If you have CaCl in there, watch where you dump that water. It's VERY corrosive and will kill your grass.

BTW, if CaCl is in there, you had better have tubes. If not, your wheels will rot from the inside out. How long that will take is unknown to me. I would guess less than 10 years would do it.

I use a 50% mix of water and radiator fluid.

 

[Anonymous Poster]

Thanks, Peter -- it's good to know I'm about on the right track. I drained the CaCl where I wanted to kill grass (my driveway) and rinsed the rims and tires off immediately after.

Yes, I made sure the tires have tubes. I wanted an alternative to calcium chloride, but they didn't have a servicer who would use windshield wiper fluid, or anything else. I figure I'll still have to replace the wheels and tires in 10 - 12 years, but it was worth it for the extra stability.