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Auxiliary Air
Nothing is more frustrating than our aux air systems. If it isn’t getting wet as Diane has pointed out, it is leaking. Hector has proven if we are absolutely focussed on curing leaks we can do it, but it is a painful and difficult process. So I have gone on the attack in anticipation of things to come.
On my 97 coach and now on the 06 I have added a circuit isolation system to the coaches. The house circuit is all I have addressed so far, but as I learn this coach I am going to do the same to the Prevost aux systems also.
I start by having all house air line tubing ready to mount on my manifold which allows me to shut down any or all circuits.
The tubes are visible next to a support for the manifold which receives bus aux air and aux compressor air. The aux compressor air goes through a water trap before reaching the manifold.
That photo shows the manifold for all house circuits set in place ready for testing for leaks. You can see each house circuit has a 90 degree ball valve which can be shut. To find which house circuit is leaking turn all the valves off, wait an hour or so, and then turn each valve back on. The one(s) in which you hear air passing are the leakers. Then it is just a matter of finding where in the circuit it is leaking.
The photo above is the steer compartment showing the new house air circuit system with the individual shut off valves and a guage for easy monitoring. The lower right of the photo shows the Norgren water trap immediately downstream from the aux compressor (in the foreground) along with the Schrader valve for filling the aux system only.
Doing the same for the Prevost system (in the future) is not going to be as neat or easy.
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