[Johnnyboy]

Thank you Richard for getting me started. I do think the tag plumbing has been changed. I cannot see how this is supposed to work in its current configuration. I drew new arrows on the supply line coming in. If we assume the Travel valves are open at the top of my picture then the air flow can bi-pass the regulator and send full air pressure to the tag air bags.

Another note the top gauge is tee to the regulator, another words I just see it showing full air pressure, will not show regulated air, so it is useless in its current configuration.

I believe someone changed out the regulator and got confused how to reassemble it. I was hoping to see another older classic tag plumbing arrangement to confirm.

I understand your sketch on running the air system, I just don’t see how it will work the way it’s currently ran. May have to move some solenoids around.

Please see if you can look at my sketch and see if you agree it’s wrong