Well I'm still scratching my head on the location of the air tank drains.
The American Dream Owner's manual 
says "These tanks hold compresses air for the brake system. They will hold enough air to allow the brakes to be used several times even if the compressor stops working. Entrapped liquid must be drained from the air tanks at frequent intervals.
Consult the Chassis Owner's Manual for additional information."
The Motor Home Chassis Fleetwood Owner's Manual
which appears to have been written by Gillig.
says "these valves are mounted in the generator radiator/battery compartment, the front compartment on the curbside of your Fleetwood motor Home.
Refer to your Fleetwood Motor Home owners manual for more information".
Which is a loop.
I wrote to Gillig and received this.
Which says the coach manufacture may have replaced the manual drains with automatic drains.
I wrote to American Coach and was told.
"We don’t install those parts for the chassis manufacturer. They are usually on the air tanks. Most have a small lanyard that you pull to expel water/moisture.
The tanks can only be seen from under the coach."
I spent some more time exploring, and under the coach today.
I traced as many air lines as I could.
One of them lead to the front most compartment on the driver's side. I believe I have only been into this compartment one other time, and found this.
The mounting of the air jack to inflate the air tanks looks professional, but the routing of the air line does not.
I'm not sure if this was done by Fleetwood or a past owner relocated it.
The Chassis manual indicates there should be three manual drains that are made up of "Plug, Hex Head 3/4 MPT / Anchor, Coupling Elbow / Valve, Air Tank Drain, Nipple".
I did find one on the first search.
It certainly is not "these valves are mounted in the generator radiator/battery compartment, the front compartment on the curbside of your Fleetwood motor Home."
I'm sure Gillig did not wire tie this like this, and I find it hard to believe that Fleetwood would do this. My only conclusion is the a previous owner did this.
The value assemble is as described in the Gillig Chassis Manual.
When opened no water or moisture of any kind comes out.
If I trace the line back to the tank it ends up above this valave.
There are three of these valves, two on one tank and one on the other.
While under the bus they release a very short burst of air.A closer look at the valves seems to indicat that one side it (ACT) activation? and the other side is (EXT) exhaust?
I tried to trace the ACT line but it disappears up into the fame into a bundle of hoses and wires and is impossible to trace. The bundle is heading towards the rear of the Motor Home.
I'm really at a loss, I believe there is an automatic drain system on the motor home, the one manual drain has no water in it.
I have to believe there must be a way to trigger the automatic system but have no clue where it might be.
I have looked through the battery/electronics bay and find nothing.
