Front air loss

[wyatt2010]

On my 1999 Newmar MountainAire I loose the front air while driving. After stopping for about 5 min. with the park brake on the air will come back. Anyone have this problem?. I had a truck service center check all the air system but found no air leaks while not driving.

[TRAILERKING]

May have bad ride height valve or valves.

[mtnpush]

I may be behind the info curve but I understand there is info about coaches loosing air in front bags. My Newmar 05 Mtn Air 4304 looses air when parked, if next to a curb it will let coach down on step (not good for step). I understand that it was traced to the rear ride height valve by Chris Mc Cord???? Also it does not take much braking when backing into camp spot to let the front end down and weak air pressure for parking brake. These may not be related, the braking part may be to spec and I understand the coach will loose air in air bags over time. How much time? Mine varies, between 4 to 8 hours and sometimes not at all and sometimes while i'm checking in to a camp ground.