AIR BRAKES CHECK (C.O.L.A.)

1.    AIR SYSTEM HOSES TEST:

Check any leaks in the system hoses. Start engine. Build Pressure at 120 psi.  Put into low gear. Stop the engine. Release all brakes.  Wait the needle to stop and then hold the brake pedal and wait for 1 minute. The pressure cannot lose no more than 4 psi. The needle don’t move during 1 minute.

2.    LOW AIR ALARM TEST:

Key must be in the on position.  Pump pedal down to range 55 to 75 psi. Alarm working at _____ psi.  Put the parking brakes back.  Make the truck neutral.

3.    GOVERNOR CUT-OUT TEST:

Start Engine.  Build pressure to 100-130 psi governor cuts out automatically at _____ psi.  Needle stops moving up.  And no more air is coming into the air tank and the needle stops moving up.

4.    GOVERNOR CUT-IN TEST:

Pump the pedal down, air pressure should not go lower than 85 psi and the governor is cut-in at (around 90-95psi).  The governor cut-in at ______ psi.

5.    CHECK ALL BRAKES:

-         Check Trailer Brakes

-         Check Parking Brakes (tractor)

-         Check Hand Brakes

-         Check Pedal Brakes

PUT THE BRAKES (Trailer and Parking) BACK