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Old 09-17-2015, 07:53 PM   #1
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Dually tire valves???

Like many of you, my MH came with the screw-on "J" valve extenders that leak as they twist around while driving. The inner has a cheap 5" plastic extension which requires another smaller extension. Of course my air chuck can't seem to fill the tires and leaks as I try.
Have any of you modified yours? I can't use the 5 1/4" truck valve extensions for the inners as they hit the rim. The inner needs some kind of flexible stem and the outer needs a permanent "J" valve.
I know there are a few options out there.
Borg Tire (Yourtireshopsupply.com)has a Dually Kit for $110 that has bendable stems. You have the added expense of taking it to a tire shop for installation.
CW has the Air Masters braided valve kit that screw on existing valves and you pop-rivet a holder for the valve stem end on your wheel liner.
Any others out there.
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Old 09-18-2015, 10:36 PM   #2
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I just looked at what camping world offered they have a few offered,my inside ones do move but I can turn enough to get chuck on to check air and to add air.Thanks for reminding me to remove simulator to see what's needed to take care of this.Looks as if they are pretty cheap in price depending on what you buy
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Old 09-21-2015, 06:24 PM   #3
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Bought Flexible mesh extenders with spring for dually

Bought from Amazon and made by Pacific Dualies for the Ford E450 16" wheels. Its a mesh 7" long and heavy duty. Comes with a stabilizer spring with good tension. Found it real easy to check and add air now. Leaving the "J" extensions that came with my Forester for now. One is slightly leaking 5-10 psi over a week or two. Retightened it and replace stem caps with ones that seal. Will see what happens on our second trip with the Forester later in the week.
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Old 09-22-2015, 12:56 AM   #4
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Sage looks nice and professional . Did you install them or a tire shop?
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Old 09-22-2015, 01:03 AM   #5
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Ben, I removed the wheel simulator cover and unscrewed the inner valve extender. Then I took the new thicker mesh flexible extender and screwed it on the inner valve stem. Next I removed the nut from the valve extension and placed the spring stabilizer over the valve extension and clipped it on the rim of the 4" oval holes. I screwed on the nut and tapped on the wheel simulator. Was easy and took less time than it did for me to type this.
Boy what a learning curve this experience has been. I'm sure it's not over.
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Old 09-22-2015, 09:56 AM   #6
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Good job looks great
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Old 09-22-2015, 10:50 AM   #7
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Thanks Boso. Now to figure out what to do about the outer "J" extension. Borg Tire Supply has permanent ones for $20 each, but as I mentioned before, it required me to trim the wheel simulator that I used on my E-350. But then I had a non flexible inner extension that may have been the problem. My local tire dealer can easily install this by just breaking the bead and swapping out valves then rebalance. Probably about $25 a tire. Still that's about $100 for just the those installed.
The bottom photo shows what I had to do on the E-350. Notice the trimming. But the E-450 does have the bigger 4" holes instead of the 2".
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Old 09-28-2015, 12:16 PM   #8
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Back from 4 day trip

Rechecked my air pressure and no real loss in any of the tires or air bags. The new inner flexible wire mesh valve extensions are working out great. Easy to check and add air, but still concerned about leakage from the "J" valves extensions FR used for the outer duals. They are holding the psi for now. So, if it ain't broke, don't fix it!
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Old 09-28-2015, 12:43 PM   #9
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I just bought a set of flexible airless valve stem extenders from camping world, made by Wheelmasters. Installed it to my inner wheel of my 3500. Doesn't require any mods. If it cracks or breaks, the airless does not deflate that tire.
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Old 09-28-2015, 02:40 PM   #10
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CW has the same kind of flex mesh ones I bought from Pacific Duallies, but CW's has a thicker metal band for the stabilizer and mine have the wire spring. I would have bought the CW ones but I didn't think they would fit thru the wheel simulator hole.
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