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Open Roads Forum  >  Class A Motorhomes

 > Valve cores stick !

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MSHappyCampers

Columbus, MS

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Posted: 05/23/12 06:36pm Link  |  Print  |  Notify Moderator

When I bought the MH a couple of months ago I discovered that when I tried to air the tires, the valve cores would frequently stick in when I removed the pressure gauge, letting air pour out. I would put the gauge back on and remove it again, sometimes releasing the core and sometimes not. I replaced the cores in all the tires but am still having the same problem. It doesn't happen as often when I am putting air into the tire with the air chuck, but when it happens it is easier to pop the chuck back on for a second and stop it. Have any of you had this problem and what did you do to correct it?


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Tombstone Jim

Tombstone Az

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Posted: 05/23/12 06:45pm Link  |  Print  |  Notify Moderator

Spray em with some silicone spray


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camperkids1025

Bel Air, MD.

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Posted: 05/23/12 06:45pm Link  |  Print  |  Notify Moderator

Sounds like they had the tires balanced with dynabeads and didn't change the valve cores over to prevent the bead material from entering the stem. Jim


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crasster

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Posted: 05/23/12 06:52pm Link  |  Print  |  Notify Moderator

I agree, silicone spray. Also some olive oil could loosen things up.


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rgatijnet1

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Posted: 05/23/12 06:53pm Link  |  Print  |  Notify Moderator

camperkids1025 wrote:

Sounds like they had the tires balanced with dynabeads and didn't change the valve cores over to prevent the bead material from entering the stem. Jim


If that is the case, they used the WRONG Dynabeads. The correct RV specific Dynabeads are larger in diameter and do not need special valve cores or any changes to a TPMS. They may have used another brand of balancing compound that does require special filtered valve cores.

rolnhome

Casa Grande, Az

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Posted: 05/23/12 06:56pm Link  |  Print  |  Notify Moderator

You probably have old air in your tires. As it ages it gets thinner and can flow past the the seal in the valve core stem. You need to put some new thicker air in the ones that are leaking. On second thought I'd do all of them to be safe.




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rolnhome

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Posted: 05/23/12 06:59pm Link  |  Print  |  Notify Moderator

Seriously make sure you have the higher pressure valve core stem. They make a a high and low pressure stem.

T&A

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Posted: 05/23/12 07:06pm Link  |  Print  |  Notify Moderator

Good question. Same thing happened to me an hour ago. Grabbed my core removal tool and bottle of cores. Tried the gage once more and it was OK again.
Terry


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Tim Nowicki

Alden NY

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Posted: 05/23/12 07:08pm Link  |  Print  |  Notify Moderator

If the balance beads are the problem, check your pressure with the stem at the 12:00 o'clock position. Any beads should just fall back in the tire when checking pressure. Works for me. Or the air chuck should blow them back when adding air

2inAlabama

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Posted: 05/23/12 07:18pm Link  |  Print  |  Notify Moderator

I would not use silicone as the tiny seal on the core is made of rubber. A trucker told me to use a non-petroleum lubricant, then cap the valve to keep dust out.


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