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Topic: Adding Air To TIres (Read 1605 times) previous topic - next topic

Adding Air To TIres

I have a air hose in my propane bay for airing up tires.

Does this work from the Aux air compressor or from the air compressor from the engine?

Re: Adding Air To TIress

Reply #1 –
Quote from: Super8mm –
I have a air hose in my propane bay for airing up tires.

Does this work from the Aux air compressor or from the air compressor from the engine?
Both.  But for airing up tires you'll probably want the engine running.  Unless the stock aux compressor has been upgraded, it's not going to keep up very well for the pressure and volume of filling tires.  It's more for low volume demands like keeping your air bags inflated.

Re: Adding Air To TIress

Reply #2 –
Even with the engine running it can be a slow process.  Works best just after governor cut out at 120 psi.  If you are trying to get your tires up to 110 - 120 forget it.  120 is way too high for most coaches.  Even at 90 psi sometimes I have to waste some air to get the governor to cut in, then wait for pressure to build. 

Re: Adding Air To TIress

Reply #3 –
I have a Viair compressor with it own pressure switch set at 115 psi hard  piped to the wet tank.
It will fill the front tires to 110 psi via the air connection, but is very slow.

Re: Adding Air To TIress

Reply #4 –
Thanks guys.  I tried several things

1 bled down the air and tried to air up a jeep tire and aux compressor did not come on.
2 brought the air up on the coach and leveled it and shut off the engine, still wont air the tire.
3 started the coach and it pumped up the tire.

looks like the bottom line on mine is I have to have the engine running to air up a tire.  Now I nee to get get another 25' of hose to reach the left rear so I can air up the inside dual  ::)    I have someone coming tomorrow to fix the slow leak but I want to add air so I am not just setting on one tire on that side

Re: Adding Air To TIress

Reply #5 –
I have an SMC Booster Regulator.  With that and my system air, I can quickly fill my tires to 115, or even 120.

I'll be at Grandvention and at the Calif Chapter MC rally in Temecula if anyone wants a demonstration.

Re: Adding Air To TIress

Reply #6 –
I have a 130 psi air governor makes airing tires a breeze.

Re: Adding Air To TIress

Reply #7 –
Thanks Tom, I was going to try and make it to Grandvention but other things got in the way.  I was supposed to be in Branson but something else has come up so I am in Wichita for a couple of days and head to Denver Thursday then back to Wichita.

Re: Adding Air To TIress

Reply #8 –
My top pressure from the D2 governor is 130. 

Re: Adding Air To TIress

Reply #11 –
Thanks Twig, very good video

Re: Adding Air To TIress

Reply #12 –
I agree with Tom, I had a booster for my Newell and it does work fast to air up.  Mine was set at about 160 psi and it's basically an air operated air pump that increases the air pressure. 
However now I'm running my fronts at 90-95 psi and rears at 85 psi so not a problem with the engine running.

Re: Adding Air To TIress

Reply #13 –
At 130 top pressure and 110 cut in you can fill your tires and the brakes are noticeably stronger

Re: Adding Air To TIress

Reply #14 –
Look at your air system schematic.  In my coach line 57 from the small compressor is isolated from the aux air hose connection by a check valve.  If you are getting air out of your aux air connection it comes from the rear brake service tank.

Re: Adding Air To TIress

Reply #15 –
I have not found an air chuck yet on my 99 U270, does anyone know?
How do wrecker trucks hook to out air brakes if we are been towed?

Re: Adding Air To TIress

Reply #16 –
Quote from: Irish –
I have not found an air chuck yet on my 99 U270, does anyone know?
How do wrecker trucks hook to out air brakes if we are been towed?
They use a male to male fitting hooked to your air chuck, which I am sure you will either find, or find where it was removed.

Re: Adding Air To TIress

Reply #18 –
Ok Mike
Thanks, thought was what it was
That's just one more thing to add to my list of never shortening things to do!

Re: Adding Air To TIress

Reply #19 –
I have seen my buddy use the pressure booster.  You are adding wet air to the tires.  No no