If you chose the long metal stem route, you probably should have them installed by a tire shop that services Heavy trucks as they have the experience and should know how to install properly. One being a longer metal stem the other is some sort of "extender" that screws onto the end of a standard stem. Valve stem extensions come in two "flavors". Thanks for your thoughts and suggestions! It's likely the previous owners had similar painful experiences which is why they installed the valve extension.ĭo my fellow forum members use valve stem extensions for your inner wheels of your rear duallies? If the answer is "no", how do you reach the inner wheel valve stem to check tire pressure et al without getting bloody knuckles, bruised forearm, sore back, etc.? If the answer is "yes", what do you do to prevent a leak from the extension? while reaching full arm length through small 3"x4" oval hand-holes in the wheels to reach the inner wheel valve stem. Without the valve stem extension, for me it is a very painful knuckle scraping, back breaking, contortionist effort to reach the valve stem to check inner tire pressure, add air if needed, attach my Tire Minder TPMS transmitter valve stem cap, etc. Truck Valve Extension | Northern Tool The valve extension is supported by a spring type "stabilizer" -> Wire Valve Stem Extension Stabilizers 4" - Always Shiny Wheels and RV () I purchased a new Milton brand valve extension to attach to the inner wheel valve stem -> Milton 4-1/8in. The rubber gasket at the bottom of the valve extension was "gone" when it was removed from valve stem (I don't know the manufacturer of the old extension). This morning took the coach to Southern Tire Mart in Katy and they found the source of the leak at the bottom of the valve extension the previous owner used. Throughout the Sulphur to Katy drive the tire pressure slowly dropped and was down to 100# when I arrived home. Filled the tire to 120# and started the drive to my home in Katy, TX. Monday morning I took the coach to Southern Tire Mart in Sulphur, LA who "diagnosed" the problem as a "cut grommet" on the bottom of the valve stem and they proceeded to change the valve stem. I spent an unplanned Sunday evening with my son and his family in Lake Charles as no tire shops were open to provide help (Love's / Speedco said they will not provide tire service to RVs!!). I was in the middle of the 30 mile long Atchafalaya Swamp causeway and luckily could pull of on an exit to add air to the tire. This past weekend (10/13/21) while driving home from LSU's win over Florida, my Tire Minder TPMS system went into alarm showing my inside right rear tire pressure was down to 90 psi.
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