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DaveyD1 · 05-06-2017, 11:09 AM

We have a 2009 Scepter 42 PDQ, I was airing the tires today and noticed that none of the airbags were inflating. The only two that did were on the tag axle,the rest did not.
We have a hydraulic level system (no air leveler) and the jack were down and coach level.
Also noticed the valve above the generator was making a buzzing sound (I believe this is for the dash air actuators as the hose went to the vacuum reservoir)when I push on the white stem it stops but resumes when I let go.is this normal.
Where did I need to start on both problems

Skip426 · 05-06-2017, 11:48 AM

Being up on the jacks, may have the coach high enough that the system thinks the air suspension is full. You'd need to drop the coach off the jacks , then run the engine to see if you actually have a problem.
The dash HVAC system vacuum pump , will run for a while , to charge the system , if it doesn't stop after a min. or so then you'll need to check that system for leaks .
If you block the pump's exhaust , and I think that's what you mean by white stem , you trigger the internal pressure sensor and it will stop.