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Old 07-04-2012, 11:16 AM   #1
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Checking air on Dually Trucks

We recently bought a GMC 3500HD Dually.

This is our first Dually.

For those of you that have Dually's, how do you check and fill the air on the rear inside tires?

Appears to be quite a challenge to get to the inside valve stems on the rear.

Also would like to install our TST Pressure sensors on our new truck, any suggestions on installing the sensors?
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Old 07-04-2012, 11:55 AM   #2
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Rob, get some valve extenders.

No experience with tire monitoring systems although have read about them.
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Old 07-04-2012, 08:35 PM   #3
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I don't have a dually, but I do have a lot of tractor trailer experience. If the valve stems are similar to the big trucks, try this gauge you can grab the inside valve stem easier. Of course adding a valve extension will work too, but I always wondered about balancing with those.
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Old 07-05-2012, 07:25 AM   #4
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First valve extenders will leak. I had some for about a day. Not worth it IMHO. You can have rigid valve stems installed by a tire shop for a nominal fee which would be a worth while investment. For tire pressure I use a rigid double sided check guage with a flexible 8-9" hose coming off it where the guage is mounted. There is a reset button on the bottom of the guage to release the pressure once you read it. Any auto parts or good hardware store would have one like it. Just make sure it has a rigid 8-9" brass or chrome rod attached to the hose to reach back in there.

I also have made up from air chucks laying around my garage a few extenders to get air in the inside stems when there is only a small chuck available at a gas station or filling station. Without them it's not going to happen.
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Old 07-09-2012, 09:33 PM   #5
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Quote:
Originally Posted by Rob_Fla View Post
We recently bought a GMC 3500HD Dually.

This is our first Dually.

For those of you that have Dually's, how do you check and fill the air on the rear inside tires?

Appears to be quite a challenge to get to the inside valve stems on the rear.

Also would like to install our TST Pressure sensors on our new truck, any suggestions on installing the sensors?
I have used the braided wire covered rubber hose valve extenders for 20 plus years- The inlet ends fasten to the outside dual rim and are easy to use- I use tread locker gel on the metal stems to keep the 2 ends properly attached and have not had a leak so far- JMHO- DD
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