I wanted to take this opportunity to inform others of what we found with our 2003 American LaFrance Eagle.

We discovered that our parking brake did not "pop" at the DOT regulated pressure of 30 psi and in fact after the air pressure was bled down to zero air, the parking brake then "popped". According to my ALF manual, the parking brake alarms are suppose to come on between 64 psi and 76 psi. This is actually not the case with our apparatus.

Also, the visual indicator activated at 60 psi but the parking brake did not function like it was suppose to in the event of an air failure.

What we found after taking it to our repair shop was that the air lines were plumbed backwards from the factory. After having the system plumbed so the system functions like intended, our brake now "pops" at 35 psi.

I just wanted to throw this out there to other departments that might have ALF trucks.

Feel free to email me if you have further questions.