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Loosing tire pressure?

A

Anonymous-0

Well-known Member
Is it possible to lose tire pressure in a loaded tire without losing the calcium? My tires seem a lower after the winter but don't appear to be leaking calcium. I'm wondering if I just need to replace the valve stems as a tiny bit of air is very slowly leaking past the valve cap. Maybe I should put the tractor on the trailer and go to the tire shop, just in case? Dave
 
The valve core is just bad. Put a jack under the tractor and rotate the valve stem up. Have a new valve stem ready. Remove all of the air you can. If it is fluid filled to the max the level will be above the valve stem. So you have to remove the old one quickly and reinsert the new one fast. Since you are not getting a fluid leak yours may not be filled up to the maxim possible. If that is the case the change will be easy.
 
The fluid comes below the height of the rim, so they aren't 100% filled. The biggest problem is that the valves are on the inside and a little tricky to get at. Is it common to have to replace just the valve core and be good for several more years? Dave
 
When they are on the inside, they can be a real pain to change. Over the years, fluid will eatup the valve cores. Sometimes it is best to replace the whole core housing. There are 2 styles of core housings.
 
Yes over time you can in fact loose a little tire pressure. It is caused by the fact that the heating and cooling of winter temps make the tube/valve leak just a little bit but over time that little bit adds up. That is also way on the side walls of tires it says cold tire pressure because after the tire is run say 100 miles if you checked tire pressure it would be up a whole lot because of the heat build up in them
 
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