Originally Posted by
Jon Wehrenberg
Here are some facts people tend to get confused about. Air suspension leaks or the leans have nothing to do with aux system pressure. The aux system pressure can be at zero and the bus can still remain perfectly level. Or vice versa.
The aux air system is actually split with part of it being the conversion, and the other part Prevost. Leaks in either one will cause a loss of aux air. The Prevost part includes the front door air lock and the belt tensioners for example, but the primary use of aux air on the Prevost is the suspension and the investigation may (will) involve the Norgren valves to an extent.