American Coach: NO AIR...

[VWtony]

Hi All!
I'm still trying to determine why I have no air for suspension at all..It aired up fine a couple days ago and now, NOTHING! I thought maybe governor, but when I remove ALL lines from governor and started engine there was no air at the 3 lines I removed..Should there be?

Thanks in advance..

BTW..1999 American Eagle, 350 Cummins, Pure Air Plus.

[twinboat]

If you get no sir pressure at all or hear it leaking at high RPMs, check the large line from the compressor to air dryer line.

Also check that the air isn't just dumping out the purge valve of the air dryer. Some have threads and can be plugged until fixed.

As far as the governor, only one line will have air. That line comes from the wet tank. All others are output. One to the compressor unloader and one to the air dryer purge valve.

[Ray,IN]

Been there; try running your leveling jacks through a complete automatic leveling cycle and store function-from start to finish.
When mine would not air-up, it was after I had shut off the ignition during the dump phase. It cost me over $100 for the mobile mechanic I called to show me the simple solution and the cause..

[DonB2]

So what your saying is......1st, deploy leveling jacks and level coach, 2nd, dump air, 3rd, deploy slides, 4th, shut ignition off?
I always put slides out and in while coach is still level

[Ray,IN]

Originally Posted by DonB2

So what your saying is......1st, deploy leveling jacks and level coach, 2nd, dump air, 3rd, deploy slides, 4th, shut ignition off?
I always put slides out and in while coach is still level

No, slides are not involved, leave them retracted. Use the automatic function to level coach, when it finishes and shuts off, store jacks for travel mode.
The automatic function should dump air springs, then level coach and turn off.
If you do not have the automatic function, dump air then deploy jacks to level, after they shut off, retract jacks.
This procedure should put them back in sync. for everything to perform as designed.


Re-reading your description of events, leads me to think the air compressor is not turning, I have no explanation for that, as they are gear-driven.