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Should Sensors of TST TPMS System Spin with Valve Stem When Removing  

Published 10/31/2022



Question:

hi: Have a TST 507 with cap sensors that I purchased fromyou. when i tried turning the sensor it appears as if the entire tire valve stem moves. am i supposed to hold the valve stem with a tool while unscrewing the sensor cap?

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Expert Reply:

The sensors of the TST TPMS for RVs # TST-507-RV-4-C that you referenced thread on just like a standard valve stem. If your valve stem is rotating with the sensor as you attempt to take them off that would indicate a problem with the valve stem. If your valve stems are bad we do have replacements with the part # AM20906.

expert reply by:
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Jameson C

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Instructions for TST-507-RV-4-C
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