Our 2004 E450 rear duals have a braided flexible valve extenders.The problem is one of the braids has been cut by a sharp edge in the wheel cover and we are basically on the road.So, while I want to replace these extensions with Tire Man or Borg rigid type it is not in the cards until we get on home turf.So my question is, are these braided flexible extenders pressured up all the time OR only when the outer valve is pushed in?If they are pressured up all the time then my only remedy on the raod is going to be to remove them. The tire is NOT LEAKING as it presently sits BUT I do not know how much damage there is beyound the frayed braid outer layer.

Move the line away from the area that is cutting it and take a closeup photo with your digital camera. I use my cameras all of the time to get up close when I can't.If the braiding is just a bit frayed, you could slip a piece of hose (that is slit open with a sharp utility knife) over the extension to protect it until you get home.I think the pressure is right up to the end of the extender..

Some are pressured and some are not. I'm not sure you can tell without taking one off. With a non-pressured one, you can push on the little stem that protrudes from the valve core and see similar action at the other end.

Depends on if or not there are two valve cores. Mostly there will be 2, so no...the braided hose will not be under pressure.......

I agree with the previous post. I had the extenders on my previous motorhome and the braid was getting frayed from rubbing on the wheel also. I bought a short section of heater hose from Napa, cut a slit in them, and slipped them over the braided line. Never had any problem with them leaking. As was stated, you will need to see how deep the braided line is cut. Since it's not leaking, it sounds like it hasn't cut into the rubber air tubing. My lines had pressure out to the valve cap.

I thought that the extenders opened the schrader valve of the valve stem when they were screwed on?

Schrader Valve Extension Problem | Good Sam Community

Its_Hondo
Explorer
Mar 01, 2014
Move the line away from the area that is cutting it and take a closeup photo with your digital camera.

I use my cameras all of the time to get up close when I can't.

If the braiding is just a bit frayed, you could slip a piece of hose (that is slit open with a sharp utility knife) over the extension to protect it until you get home.

I think the pressure is right up to the end of the extender..
pauldub
Explorer
Mar 01, 2014
Some are pressured and some are not. I'm not sure you can tell without taking one off. With a non-pressured one, you can push on the little stem that protrudes from the valve core and see similar action at the other end.
artguys
Explorer
Mar 01, 2014
Depends on if or not there are two valve cores. Mostly there will be 2, so no...the braided hose will not be under pressure.......
hotjag1
Explorer II
Mar 01, 2014
I agree with the previous post. I had the extenders on my previous motorhome and the braid was getting frayed from rubbing on the wheel also. I bought a short section of heater hose from Napa, cut a slit in them, and slipped them over the braided line. Never had any problem with them leaking. As was stated, you will need to see how deep the braided line is cut. Since it's not leaking, it sounds like it hasn't cut into the rubber air tubing. My lines had pressure out to the valve cap.
Its_Hondo
Explorer
Mar 01, 2014
I thought that the extenders opened the schrader valve of the valve stem when they were screwed on?
hotjag1
Explorer II
Mar 01, 2014
Its_Hondo wrote:
I thought that the extenders opened the schrader valve of the valve stem when they were screwed on?

That's how mine worked! On my current motorhome, I have the 135 degree steel extenders, and they open the valve too. I prefer the steel extenders as there is no flexing going down the road.
Dakzuki
Explorer
Mar 01, 2014
On my previous RV they were pressurized and when one leaked it was hissing. I got lucky and caught it but I will never have those ever again.
Harvard
Explorer
Mar 01, 2014
Thanks for the replies.

A follow up question:

Can these extenders be removed WITHOUT removing the (dual) wheels?
pianotuna
Nomad III
Mar 01, 2014
Hi Harvard,

Mine were pressurized. I know mine could not be put on without removing the outer wheel. I thought they were a bad choice from day one.
OldRadios
Explorer
Mar 01, 2014
I just got rid of my wheel covers. They don't do anything but get in the way.

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Schrader Valve Extension Problem

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