Reply
 
Thread Tools Display Modes
Old 11-10-2018, 03:02 PM   #1
Junior Member
 
fifth wheelen's Avatar
 
Join Date: Dec 2017
Location: North East
Posts: 15
Checking inside tire pressure

2016 Ford F350 6.7 diesel 17" dully wheels. Problem getting to inside rear tire valves. Just added Crossfire pressure equalizers. Problem solved
Attached Thumbnails
Click image for larger version

Name:	1541879657619739312062.jpg
Views:	51
Size:	262.2 KB
ID:	191156  
__________________

fifth wheelen is offline   Reply With Quote
Old 11-10-2018, 03:15 PM   #2
Senior Member
 
Retired JSO's Avatar
 
Join Date: Feb 2016
Location: NE Florida
Posts: 470
Factory stems on my truck are easy to get to using a standard truck air chuck. Iím kind of scared to use something equalizing pressure unless it contained some sort of check valve to keep the adjoining tire from loosing air too..Click image for larger version

Name:	1664061A-1D36-472E-9446-3838E795D023-9741-000006552C80F7AD.jpeg
Views:	45
Size:	27.5 KB
ID:	191159
__________________

Retired JSO is offline   Reply With Quote
Old 11-10-2018, 03:30 PM   #3
Junior Member
 
fifth wheelen's Avatar
 
Join Date: Dec 2017
Location: North East
Posts: 15
Unit has internal check valves to isolate a tire if it goes 10 psi below the set pressure. See Home - Dual Dynamics for more info. Thanx for the response.
fifth wheelen is offline   Reply With Quote
Old 11-10-2018, 07:48 PM   #4
Senior Member
 
Join Date: Jul 2009
Location: Warsaw,NC
Posts: 6,042
I looked at the site, how do you put a TPMS on the dually
__________________
2015 Cedar Creek 32RL
2012 Silverado 3500HD SRW
http://www.forestriverforums.com/for...ignhavefun.gif
spock123 is online now   Reply With Quote
Old 11-11-2018, 01:40 PM   #5
Member
 
jbrosecity's Avatar
 
Join Date: Jan 2018
Location: Vancouver, WA
Posts: 63
adding TPMS to motorhome with duallies

I submitted this to Forest River's design dept. Forest River does not see fit to include any TPMS option on the Forester, Sunseeker and probably most of their other rigs. I feel this is an oversight and will explain why and what I did about it, in hopes it ultimately reaches the design engineers.
 
There are many reasons why a good TPMS option is almost essential these days. The fact that almost all new car manufacturers including Ford include internal sensors on all their new cars today, is reason enough to make these standard equipment on motorhomes. There is plenty of data available to shows the dangers of blowouts on motorhomes, and this danger only increases as tires age. It is incumbent on motorhome owners to protect and watch their tires carefully and replace them as needed, and on a time schedule even if appearance and treadwear do not dictate this. I think this is inarguable.
 
I decided long ago, that a good TPMS system is cheap insurance on a big Class A unit given the cost of those tires. If a tire has a slow leak the driver often does not know about it until it is too late and it either causes a blowout or at the very least has let the pressure run so low that the sidewalls of the tire have been ruined, and the cost of a single big rig 22" tire is as much or more than the cost of a TPMS system. So TPMS is cheap insurance for that reason alone. Where almost all motorhomes today have duallies on the back, it should be obvious that a flat on an inside dually may never be visible until it is too late, making it quite likely that driver is driving down a highway with all the rear weight on one side totally supported on a single tire, thereby greatly increasing the chances of a blowout on that tire from overload. But even on a Class C where the tires are more in the $200 range, safety and convenience and timing on the road make a good TPMS invaluable. And yet only a small percentage of motorhome owners have a TPMS system, and thanks to manufacturers who don't include them as standard equipment, or at least optional equipment, owners may not even know about them.
 
Therefore I think it is incumbent upon industry leaders like Forest River to offer TPMS as an option on all their rigs, if not as standard equipment which industry leaders like FR should seriously consider. I have installed external tire pressure sensors on other motorhomes I have had, which then communicate with a dash mounted display to provide the driver with a constant readout on the pressures on all 6 or 8 tires and sound alarms when the psi falls below a pre-set minimum (or above a maximum). This always worked well but I found it very difficult to install this kind of system on my Forester because of the use of the stainless Dicor_Fastliner- style wheel inserts. Making it even more difficult is Forest River's decision to use cheap screw on valve extensions to bring the valve stems out to the outside where they are accessible for adding air. Thus a screw on external Tire pressure sensor might be on top of two or more screw on extensions, thereby great increasing the likelihood of introducing slow leaks.
 
Since I had a system with external screw on sensors, saved from an earlier Class A, I tried this route first with little success. The multiple valve extensions and stainless wheel inserts made it all but impossible to get it right. I ordered a set of Duallyvalve.com solid one piece valves of the proper length custom designed for a Ford E450, purchased from accu-pressure.com. While these reached thru the stainless wheel lines for attaching an air pressure chuck to add air, it was still very difficult or screw on the sensors due to clearance issues without using short valve extenders, defeating the purpose of the custom one piece valves.
 
Finally, after some research I discovered the Dill Air internal system
1506-453 Trailer TPMS System With 6 Sensors
available as a 6 tire system perfect for a class C motorhome with duallies on the rear. I had the internal sensors installed by lesschwab.com with a banded/cradle setup ordered from tirerack.com
6 BAND14/26IN ADJUSTABLE FORD TPMS STRAP 13.00ea
6 1025U DILL CRADLES FOR TRAILER TPMS 2.00ea
 
I used the brass Duallyvalve.com solid one piece valves to bring each valve stem out to where an air chuck could be fitted easily to add air when needed. Total cost was around $800 or so but now I have the ideal system to keep a careful eye on my tires.
 
I take the time to explain this carefully in hopes that FR will eventually decide it is good business to offer this system as an option, if not as standard equipment, on all their RV's.

__________________
2019 Forest River Forester 3041DSF
Ford E-450 Chassis
www.Wind-seeker.com
jbrosecity is online now   Reply With Quote
Old 11-11-2018, 04:11 PM   #6
Junior Member
 
Join Date: Apr 2014
Posts: 27
Thanks fifth wheelen for sharing. I have this issue with my dually. TPMS sensors only on outside wheels, no room inside. And I still have to monkey with air chuck shown above to get inside wheel aired up. I'm not a fan of extenders, etc because of more leak points.

Jbrosecity, I like that set up but Do they not have regular sensor valves, i.e. car style, not banded? Maybe I need to re-visit your post and Dill Co. , to better understand.
Thanks.
herewego is online now   Reply With Quote
Old 11-11-2018, 07:45 PM   #7
Junior Member
 
fifth wheelen's Avatar
 
Join Date: Dec 2017
Location: North East
Posts: 15
My truck was purchased used & came from Canada. I found out that TPMS is not required there. I’m thinking about installing 1 external sensor on each of the Crossfire units to monitor the rear tires collectively. Not a perfect solution but at least it will give an indication of a leak.
fifth wheelen is offline   Reply With Quote
Old 11-12-2018, 12:32 AM   #8
Member
 
jbrosecity's Avatar
 
Join Date: Jan 2018
Location: Vancouver, WA
Posts: 63
herewego... yes dill air does sell the normal internal sensors... that is what are mounted in the banded cradles inside my wheels.
you will note from the image that they have regular valves stems and can be mounted on normal steel wheels (without wheel covers) or on alloy rims, but the stainless steel dicor-style inserts prevent this except with an extension... ditto on the duallies... the outer rim on the dual has the valve stem pointed inwards and of course the inner dual is totally inaccessible for a normal short valve stem. Dill Air clearly states you cannot use anything but plastic caps on their sensors which would rule out most valve extensions. I mean you might be able to use an all plastic valve extension, but as others agree, anytime you use a valve extension you open up the possibility of leaks. That is why I went with the banded installation... and then installed the special custom long valves from duallyvalve.com as also shown in the image. Now I have good reliable sensors inside each wheel and one piece metal valve stems that reach right out thru the stainless wheel inserts with no extensions necessary. NOTE... when I first tried just the long valves, I STILL couldn't get external sensors to screw on to the tips because of clearance issues with the wheel inserts. I finally gave up on that approach and bought the Dill Air internal set and am very pleased with it. Not cheap but REALLY works!
__________________
2019 Forest River Forester 3041DSF
Ford E-450 Chassis
www.Wind-seeker.com
jbrosecity is online now   Reply With Quote
Old 11-12-2018, 09:25 AM   #9
Junior Member
 
Join Date: Apr 2014
Posts: 27
Got it. Jbrosecity, thanks for the explanation. I'm going to look at this set up and the OP's as well. My outer wheel is aluminum, inner is steel. Inner never seems to loose pressure, but of course I still have to check it routinely. I have the Minder TPMS now on truck and fiver, but not on the inner dually, last piece of the puzzle. TPMS is non-blowthru style. PITA to air up. My buddy has a class B+ with same problem as OP, Dicor inserts but has extenders. Noisy and come loose.
Didn't mean to highjack this conversation but its good info from all here. Thanks again.
Oh by the way, agree that TPMS should be "at least" an option and back up lights should be mandatory.
herewego is online now   Reply With Quote
Old 11-12-2018, 04:30 PM   #10
Senior Member
 
Join Date: Jul 2009
Location: Warsaw,NC
Posts: 6,042
Why should back up lights be mandatory. TPMS are different brands plus trucks sometimes come with TPMS.
__________________

__________________
2015 Cedar Creek 32RL
2012 Silverado 3500HD SRW
http://www.forestriverforums.com/for...ignhavefun.gif
spock123 is online now   Reply With Quote
Reply

Tags
check, pressure, tire

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Featured Campgrounds

Reviews provided by


Disclaimer:

This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 02:38 PM.