Parking Brake Test - PREVOST X3-45 Commuter 2020 Operating Manual

8-14 Care and Maintenance
stopped and without brake pedal applied. Air loss
should not exceed 7 psi/min (48 kPa/min) with
engine stopped and brake pedal fully applied.
A convenient way to proceed to the service brake
test is with the use of the DID menu "Air Leakage
Monitor". For more information, refer to "DRIVER
INFORMATION DISPLAY" on page 30 in Section
5 Other features.

PARKING BRAKE TEST

Release parking/emergency brake. Pump service
brake pedal until air pressure drops to 65 psi (448
kPa). Make sure the warning buzzer operates
and that the emergency brakes apply (the control
valve knob lifts up). Allow air pressure to reach 95
psi (655 kPa) before releasing parking brake.
Driving the vehicle while the parking brake is
applied should not be possible.
DOB 1300-1556 PA-1639 Operator's Manual 2020 X3-45 Commuter