Go Back   iRV2 Forums > MOTORHOME FORUMS > Toads and Motorhome Related Towing
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Thread Tools Search this Thread Display Modes
Old 02-17-2015, 09:15 AM   #1
Senior Member
Join Date: Oct 2012
Location: Pawleys Island SC
Posts: 339
An Air Force One Story -- long

This story is true and involves a 2007 Kountry Star diesel pusher, a model 625 HWH jack system and an Air Force One auxiliary braking system.

I traded in a 2000 Kountry Star for a 2007 Kountry Star and the dealer moved the Air Force One system from the 2000 to the new, to me, 2007 Kountry Star. The original jack system on the 2007 had a bad control panel, and the manufacturer of that panel is out of business so no repair was possible. The dealer installed a new HWH 625 jack system and when all was done, we started out.

After about 1,000 miles we ended up in a campground in Florida City FL for about six weeks. While at the campground, it was necessary to move to a camp site on the other side of the campground Ė about 1000 feet with several tight turns on narrow streets. While inspecting the new camp site before backing in, I noticed a loud hiss of air escaping from somewhere, and I decided to have a RV service company inspect the issue and take care of what turned up. Their inspection determined that the input air line to the Air Force One MH air input to rhe control unit was broken completely off, and the unit itself was damaged. They had the part in stock and after replacing the damaged unit all works just like new.

The purpose of this story is to provide an actual result of what happens when an air supply fault to and/or from the Air Force One occurs. Some have expressed concerns about what would happen if such a condition were to occur. SMI states that the air system of the MH is protected in such situations. Well, as major a fault as could occur did occur, and if this interests you read on.

The cause of the damage was that the Air Force One MH control unit was installed in a position that allowed the drive shaft to strike the unit and cause the damage in some situations when the air bags were deflated by the HWH jack system when operating in the auto-level function. As you most likely know, the first action of the auto level system is to deflate the air bags and then level the rig. It doesnít deflate the bags the same amount every time, but one time it deflated enough to do the damage. The cure was to relocate the AF1 MH unit away from the danger.

Since I have a brake indicator powered from the load side of the toad brake light, I know there was no problem when setting up at the last camp site before the move. When I moved camp sites, I had no indication of the problem while moving from one camp site to the other because I didnít connect the toad to the MH. I didnít notice the air gauges, but the low pressure alarm stopped sounding, and I was able to drive away normally.

During the move, I drove no faster than 10 mph and used the brakes often because of the tight turns. Everything, including the brakes, worked as usual. The only indication of a problem was the loud hissing sound of escaping air I discovered after getting out of the rig.

After setting up at the new camp site, I started the engine to observe the air gauges. The front air gauge was at about 80 psi and the rear air gauge was at about 70 psi. With the engine idling, they stayed at that air pressure.

It took the service company a couple of days to come and inspect the problem, and while waiting, I checked the air pressure at idle several times. The low pressure alarm would always stop sounding and the air pressure would remain at about 75 psi. After the problem was fixed, the air pressure at idle returned to 125-150 psi.

I didnít drive the rig on the road with this problem, but all indication are that above idle speed, the air compressor will keep up with the required air pressure for safe braking and normal driving with a break in the air system.

I hope this story is helpful for those considering an Air Force One toad braking system. It is truly an outstanding system providing perfect toad braking without any adjustments required. The rig stops in the same or less distance with the toad attached as without the toad attached.

Good Luck!

Wil Andrews
2007 Newmar Kountry Star DP
Cummins ISL, Cummins E-Brake
wil01 is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 02-17-2015, 09:23 AM   #2
RVM #74
PushedAround's Avatar

Tiffin Owners Club
Join Date: Sep 2012
Location: Ambler, PA
Posts: 2,853
Blog Entries: 7
Good to hear that a line failure in the AF1 setup it does not incapacitate the rest of the air system. With so many out there, I'm sure that we would have heard of such problems by now.

Larry & Cheryl Oscar, Louie, Ranger & Henry (our Springers)
PushedAround is offline   Reply With Quote
Old 02-19-2015, 04:11 PM   #3
Senior Member
BarryN514's Avatar
Fleetwood Owners Club
Join Date: Feb 2012
Posts: 328
So your saying that there was no fault of the AF1 but basically when it was installed that caused the problem?
2013 Bounder 34M
Toad-Hyundai Elantra w/Blue ox tow bar and SMI Delta Force Brake system
BarryN514 is offline   Reply With Quote
Old 02-19-2015, 04:45 PM   #4
Senior Member
Join Date: Jul 2014
Posts: 11,792
You say that
"all indication are that above idle speed, the air compressor will keep up the required air pressure for safe braking and normal driving"

Did you confirm that the air would climb above 90 lb`s.

At 75 lb`s pressure, you are below the working pressure of 90 to 120 lb`s and only 15 lb`s above, spring brake application.

If you can not build and maintain at least 90 lb`s, you do not have safe brakes.

At least clamp off the leak, before driving on the road.

Just my opinion
twinboat is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Air Force One Install Iwillbeit Toads and Motorhome Related Towing 16 01-21-2015 01:38 PM
Air Force One Toad Brake System? adonh Toads and Motorhome Related Towing 8 01-17-2015 11:34 AM
Air Cleaner Air Intake/Pick Up Dutch Star Don Newmar Owner's Forum 47 04-21-2014 08:20 PM
U.S. Air Force Band Flash Mob Wayne M Just Conversation 8 12-20-2013 10:50 AM
Air force one braking system Vsilvester Toads and Motorhome Related Towing 11 09-22-2013 04:44 PM

» Featured Campgrounds

Reviews provided by

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:27 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.