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Chassis air

Yahoo Message Number: 82107
Question: has anyone used the chassis air to tap off for tire inflation; seems that the increased air pressure in that system might be sufficient for tires without a doubler like on the small compressor? Roger Harper
2006 Intrigue
#11990

Re: Chassis air

Reply #1 –
Yahoo Message Number: 82108
Roger:

You can use this system as an emergency system to air up your tires enough to get you to a gas station or truck stop, you will not be able to inflate your tires to 105psi - 110psi using the chassis air system without using an Air Doubler.

Kevin Waite
541-953-6162

Re: Chassis air

Reply #2 –
Yahoo Message Number: 82110
Roger,

It can be done but is a bit of a pain. At the end of my air hose, I have a gauge between the hose and the air chuck. Procedure I use--- pump the brakes until the pressure is down to 95 pounds, start the engine, and put it on high idle. Go out to the tire being serviced, when the gauge reached 110 lbs, attach the chuck, it will usually take about 50 seconds to put in 5 lbs. If the spitter blows before the desired pressure, I start the procedure all over again. I run 110 lbs in the front and 95 lbs in the rear. As mentioned, it can be a pain.

Bill Dane 99 Allure 30326

Re: Chassis air

Reply #3 –
Yahoo Message Number: 82111
The highest pressure I need is 95 PSI so this method is a piece of cake. Been doing it this way for years. Even 100-105 PSI is no big deal.

Lee
--

Lee (leozbrowski@...) 2007 Country Coach Intrigue 12153
CAT C-13

Re: Chassis air

Reply #4 –
Yahoo Message Number: 82112
Roger

Not the optimum method, in my experience. If all you need is 100lbs, it's not too bad, but it takes forever to get to 110lbs. As a last resort I carry a hose for emergencies.

Larry,03 Allure, 30856

Re: Chassis air

Reply #5 –
Yahoo Message Number: 82113
I also carry the hose for emergencies but have a VIAIR continuous duty compressor for the convenience of filling the tires. It is tiny and esily fills the fronts to the recommended 130 psi. Fits in a little carry case as well.
Marc 2005 Affinity #6429

Re: Chassis air

Reply #6 –
Yahoo Message Number: 82115
This can be done. Check YouTube for the information. You will need a pressure gage connected to your air supply, to build pressure greater than the tire requires .

Mike David 2007 intrigue

Re: Chassis air

Reply #9 –
Yahoo Message Number: 82118
Hey CCBrad, how goes it?

I suppose our coach is a lightweight as it's only 40 feet and we don't carry a ton of hardware and stuff, like spare air compressors ;-)) Then there's the mud flap I took off years ago. I could go on . . . Helps the MPG too.

Lee Z

Re: Chassis air

Reply #10 –
Yahoo Message Number: 82119
I like that Z-Man name ! I guess it goes without saying, that you have weighed your coach and used the FMCA suggested formula for determining your tire pressures !!

Ron Baran 09 Magna 7025

Re: Chassis air

Reply #11 –
Yahoo Message Number: 82120
Re: [Country-Coach-Owners] Re: Chassis airWe like the Z-Man name too and have actually met him and his lovely wife! The Z-Man name fits! We are always grateful for learning things from him even though we have an 06 Inspire.

Mary and Mike Frederick
06 Inspire 51784

Re: Chassis air

Reply #12 –
Yahoo Message Number: 82121
Z-Man,

Doing well, thanks. Will head back to San Felipe some time in October. I'll bet your ride is better with the lower PSI.

DBradley

04 Intrigue #11830

Re: Chassis air

Reply #13 –
Yahoo Message Number: 82122
Dear friends, I am blushing, Jeanne too.
'Suggested formula' sounds like a come-on for this chemist. Do you want it in Fahrenheit (F), Kelvin (K), or Celsius (C)?

How about KISS?

  • We get the 6 point weighing at Dick Lorntson's shop (Precision Frame & Alignment). The coach is mostly loaded with food, water, clothes, stuff, fuel as we are mid-trip. Dick and I agree on the following.
  • Consulting the tire manufacture's tables, start with the PSI recommended for the per-tire weight carried on the heavier end of the axle to inflate all tires on that axle.
  • Add 5 PSI per-tire (some like to use 10, if you will stay under 120 PSI).
  • Since the service shop is not a controlled temperature environment, when we get home I visit the building where the coach is stored. The temperature is usually close to the recommended 65-70 degrees F for tire inflation. I then tweak the tire pressures accordingly to the desired PSI (table recommendation +5 PSI).
  • Optional (for extra credit). The inner duals will usually read 5-10 degrees F higher when rolling down the road (SmarTire data) so I usually go 1-2 PSI light on them. As observed by me on gray days, all 4 dual tires usually run only 1 PSI different, using this refinement. Of course the sunny side always runs hotter . . . you can't control that.
  • IMHO, valve extensions can leak so I avoid them.
LeeZ
 

Re: Chassis air

Reply #14 –
Yahoo Message Number: 82141
Replacing the valve stems on inner duals with longer ones (no extensions) pointing out sure makes the whole thing easier. I know that my back likes them.

Dan 2006 Allure 31348