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06-01-2017, 06:04 AM
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#1
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Senior Member
Join Date: Nov 2015
Location: Cherry Hill
Posts: 231
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Dually Tire Pressure
Hi Folks, Yesterday I had Valve Stem Extenders added to the Dually on my Precept 35UN, The pressure in the inside tires was 80lbs, the outside tires I kept at 100psi cold. The coach road very nicely when I started to keep 100 psi in the 4 tires I could get to, but let me tell you, with 100 psi in all the tires now the coach drives like a luxury sedan, I thought it drove well before, but this change made a HUGE difference. I am so looking forward to driving to Yellowstone from NJ next month! If you cannot get to your inner dually, get extenders, the difference is amazing.
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06-01-2017, 09:18 PM
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#2
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Senior Member
Join Date: Apr 2017
Location: Jensen Beach
Posts: 213
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Which extenders did you get and who put them in for you?
Sent from my iPhone using Tapatalk
__________________
Gus and Jeanette and the Hunter Dawg in
Jada's Hut (a 2017 Precept 35S) towing a
2016 Jeep Cherokee High Altitude Limited
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06-02-2017, 07:47 AM
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#3
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Senior Member
Join Date: Nov 2015
Location: Cherry Hill
Posts: 231
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I made an appointment at a Truck Service Center, they supplied the extenders and installation, not sure what brand they are, the one side they were able to install without taking the tire off, the other side the outside Dually had to be removed to install the extender. Call a local Truck tire service center, I am sure they can help you. I also just added a Tire Pressure Monitor System for 10 tires, 6 on the MH and 2 on Dolly and 2 for rear toad tires.
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06-02-2017, 08:02 AM
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#4
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Senior Member
Join Date: Apr 2017
Location: Jensen Beach
Posts: 213
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Thanks so much nma33. When I originally called St. Lucie Tire and Battery, who had previously aligned the front end, they told me they don't install extenders for liability reasons!?!?!? I called again after your post and they said to bring it in. They will dismount and mount the two outside rims ($22/tire) and add the proper stems to the inside ones ($7 each). Think I'll do that and see if they can also finally straighten out the steering wheel which they tried twice before without success.
__________________
Gus and Jeanette and the Hunter Dawg in
Jada's Hut (a 2017 Precept 35S) towing a
2016 Jeep Cherokee High Altitude Limited
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06-02-2017, 08:06 AM
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#5
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Senior Member
Join Date: Apr 2017
Location: Jensen Beach
Posts: 213
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Quote:
Originally Posted by nma33
I made an appointment at a Truck Service Center, they supplied the extenders and installation, not sure what brand they are, the one side they were able to install without taking the tire off, the other side the outside Dually had to be removed to install the extender. Call a local Truck tire service center, I am sure they can help you. I also just added a Tire Pressure Monitor System for 10 tires, 6 on the MH and 2 on Dolly and 2 for rear toad tires.
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I've been looking at several TPMS systems and also need 10 transmitters (4 down on the Jeep that, although it has it's own system, I can't tell what the pressures are from the driver's location on the MH and 6 for the coach). Going back and forth and a little confused with all the options, flow through or not, etc. Been reading quite a lot on the forums but hasn't helped me decide yet. What did you decide on going with and main reason please? Thanks.
__________________
Gus and Jeanette and the Hunter Dawg in
Jada's Hut (a 2017 Precept 35S) towing a
2016 Jeep Cherokee High Altitude Limited
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06-02-2017, 08:20 AM
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#6
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Senior Member
Join Date: Nov 2015
Location: Cherry Hill
Posts: 231
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TPMS EK215T10 Tire Pressure Monitoring System
I purchased it on Amazon, It was easy to set up, You can link or unlink your toad.
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06-02-2017, 09:06 AM
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#7
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Senior Member
Join Date: Apr 2016
Location: Fortuna Foothills
Posts: 1,863
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Quote:
Originally Posted by Palms
Thanks so much nma33. When I originally called St. Lucie Tire and Battery, who had previously aligned the front end, they told me they don't install extenders for liability reasons!?!?!? I called again after your post and they said to bring it in. They will dismount and mount the two outside rims ($22/tire) and add the proper stems to the inside ones ($7 each). Think I'll do that and see if they can also finally straighten out the steering wheel which they tried twice before without success.
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Some tire shops and truck centers will not install the valve extenders because of the liability that can be incurred due to the valve extenders leaking which obviously causes low air pressure on the inner dual tire which may in turn cause a blow out. There really isn't any reason to add the valve extenders all you need is an air chuck and gauge that has a long enough shaft to reach the valve. Both can be purchased at NAPA or on Amazon.
I had my tire shop add Alligator Valve Stem Caps on my inner dual tires so I don't have a valve stem cap to remove to check or fill air.
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06-02-2017, 09:29 AM
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#8
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Senior Member
Join Date: Sep 2013
Location: Wentzville
Posts: 272
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Valve stem extenders are notorious for leaking and should never be installed in the absence of a reliable TPMS. . . . The way the duals were configured when my Precept was delivered, there was no type of air chuck that could access the inner tire's valve stem. You couldn't see the valve stem through any hole. Why Jayco thinks that is OK is a mystery.
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06-02-2017, 09:36 AM
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#9
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Senior Member
Join Date: Apr 2017
Location: Jensen Beach
Posts: 213
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I think I'll take a drive over to St. Lucie Tire and see exactly what they're proposing in person before taking the MH there. I can barely see the inside tire stems through the hand holes on the Alcoa Rims. I have a long tire pressure monitor that, because of the angle, will not go onto the stem when going through the hand hole, and unless they're going to install a significantly longer one that I can connect to, I don't think it will solve anything. I think I'll also need to change the fitting on my compressor to a solid shaft one to access that stem as the flexible hose it currently has would not work in this case.
__________________
Gus and Jeanette and the Hunter Dawg in
Jada's Hut (a 2017 Precept 35S) towing a
2016 Jeep Cherokee High Altitude Limited
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06-02-2017, 07:25 PM
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#10
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Senior Member
Join Date: Apr 2017
Location: Treasure Coast Florida
Posts: 643
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Quote:
Originally Posted by Vicr
I had my tire shop add Alligator Valve Stem Caps on my inner dual tires so I don't have a valve stem cap to remove to check or fill air.
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Beware the dreaded Alligator caps! They too leak when you least expect it. For your safety, and the safety of those sharing your road, remove these convenience devices.
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06-02-2017, 07:33 PM
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#11
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Senior Member
Join Date: Apr 2017
Location: Treasure Coast Florida
Posts: 643
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Quote:
Originally Posted by Palms
I think I'll take a drive over to St. Lucie Tire and see exactly what they're proposing in person before taking the MH there. I can barely see the inside tire stems through the hand holes
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Have them replace the short metal tube/valve with a long metal tube/valve. Also add the rubber donut to stabilize the longer tube. I converted my Viair air chuck from a press to inflate type to a clip on type. Much easier to add air with the clip on.
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06-03-2017, 10:58 AM
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#12
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Senior Member
Join Date: Apr 2017
Location: Jensen Beach
Posts: 213
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I suggested that to them and they said they had to special order it and that I'd have to find the donut at a Truck or Chrome shop. I think I'll take it in next week and see what they can do. I already have a straight pressure gauge and by buying a straight air chuck, with a nipple I should be able to connect it to my compressor and away we go!
__________________
Gus and Jeanette and the Hunter Dawg in
Jada's Hut (a 2017 Precept 35S) towing a
2016 Jeep Cherokee High Altitude Limited
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06-03-2017, 11:27 AM
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#13
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Senior Member
Join Date: Apr 2016
Location: Fortuna Foothills
Posts: 1,863
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Quote:
Originally Posted by Crossingover
Beware the dreaded Alligator caps! They too leak when you least expect it. For your safety, and the safety of those sharing your road, remove these convenience devices.
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They came highly recommended by the truck tire center that installed them. The manager there said they knew of no failures or leaks. He said they would never install any after market device with any history of failures or leaks. What factual basis do you have to your claim?
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06-03-2017, 01:03 PM
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#14
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Senior Member
Join Date: Apr 2017
Location: Treasure Coast Florida
Posts: 643
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Quote:
Originally Posted by Vicr
What factual basis do you have to your claim?
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Personal experience with them. Two leaked, one of which was on a steer wheel. I didn't have TPMS at the time, and when we stopped to refuel, I noticed a slight bulge in the tire indicating it was low. Sure enough, it was down to 73 psi (we started the day at 110). There is an O-ring in the Gator cap that can (and in my case, did) become distorted/torn. Too unsafe for my liking, with or without TPMS early warning. Threw all of them as far away as I could. The few extra seconds it takes to R&R a standard metal valve cap to check/adjust air is well worth it for non-leakage peace of mind.
__________________
Rick with Lori and Two Pekes
'16 Jayco Seneca HJ Topaz
'13 Mini Cooper toad : Blackhawk All-Terrain tether
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06-05-2017, 08:47 AM
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#15
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Senior Member
Join Date: Sep 2013
Location: Wentzville
Posts: 272
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Once you have TPMS that continually keeps you apprised of what is going on, the next subject that comes up is to decide when pressures have gotten so far out of whack you have to do something. Like, in the case of the duals, just how much split between them, within a pair, is reasonable to tolerate? I've thought the answer to that is ~2 or 3 psi. Between the front tires I'm inclined to tolerate a ~5 psi split. But I have seen no expert guidance on this subject. Opinions?
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01-11-2018, 08:29 PM
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#16
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Senior Member
Join Date: Jan 2018
Location: Palm City
Posts: 203
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Tire pressue monitor sinders
Quote:
Originally Posted by Vicr
Some tire shops and truck centers will not install the valve extenders because of the liability that can be incurred due to the valve extenders leaking which obviously causes low air pressure on the inner dual tire which may in turn cause a blow out. There really isn't any reason to add the valve extenders all you need is an air chuck and gauge that has a long enough shaft to reach the valve. Both can be purchased at NAPA or on Amazon.
I had my tire shop add Alligator Valve Stem Caps on my inner dual tires so I don't have a valve stem cap to remove to check or fill air.
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How do you install your tire pressure monitoring sending units to your inner dual valve stems? I use TireMinder's pressure monitoring system which requires these sensors to be screwed on to each valve stem.
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01-12-2018, 09:24 AM
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#17
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Member
Join Date: Dec 2016
Location: Calgary
Posts: 65
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hikerjohn7, The easiest way is to install Valve Stem Extenders to the Dually. I did that on my 35S and had no problem with any leaks yet and the sensor works great.
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01-15-2018, 04:36 PM
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#18
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Junior Member
Join Date: Aug 2015
Location: waterford
Posts: 10
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I used tire pressure equalizers for the rear
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01-15-2018, 07:39 PM
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#19
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Senior Member
Join Date: Apr 2016
Location: Fortuna Foothills
Posts: 1,863
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Quote:
Originally Posted by hikerjohn7
How do you install your tire pressure monitoring sending units to your inner dual valve stems? I use TireMinder's pressure monitoring system which requires these sensors to be screwed on to each valve stem.
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I crawled under the coach. It was a little bit of a PITA but I've had to do worse.
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