Air suspension problem

[AFChap]

02 Spartan MM GT chassis w/HWH air system. Rear air bags went flat while driving. We began to feel a vibration on slight decel, gradually getting worse. When we pulled inti an rv park I noticed rear air was down. Recyled air system and it raises front, does the little air exhaust, but rear does not come up. Dash gauges are normal. Road service is looking for help in Meridian MS.

[Mekanic]

No idea what a HWH air system is.
However if you have a auto leveling valve and the linkage came loose from the axle and gravity will pull the lever down Making the bags dump air. once they are empty it will just sit there.

I'd take a look at that valve linkage.

[AFChap]

Good call, Mekanic. Mobile tech this morning found the bracket that bolts to the bottom of the left rear airbag, and attaches to the rear ride height linkage, was cracked nearly in two and hanging low. He removed, welded, and remounted it. We were back on the road two hours after he arrived.