RV Repair: RV leaning on one side, frame sag?, ford chevy, chevy p30

Question
My 1991 Fleetwood Flair 22D(I'm pretty sure build on a ford P30 chassis), if you look at the frame rail ends(leaft side, this time right in front of the coach) by the bottom of the grill you can see that in one side the frame rail end is higher(or could be the body is lower) in comparation with the other side, since the body is bolted to the frame i think it is not a sagging spring, it appears that either the frame has bended up or the body has sagged into it, however all body cushions seen ok and the coach has never been crashed. Any sugestions on what it could be and what to do to fix it?

Answer
Hi Angelo
That should be a CHEVY P30 chassis not Ford. Chevy put air bags in the front coil springs of that rig and we often see them without air and that produces a chassis lean. The valves for those are in the bottom of the "A Arm" and you'll have to et under it to fill them. If thats not it I would not know with out seeing it. Those bags have to be maintained at no less than 20 psi and no more than 110 psi. 55 psi is about right for your rig.
If they have failed,they will need to be replaced. There is an after market bag you can buy if you want to tackle it yourself. Its not easy.

Thom