PREVOST X3-45 COMMUTER User Manual

SECTION 12: BRAKE AND AIR SYSTEM
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
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13. EMERGENCY DOOR OPENING VALVES
Three pressure release valves are installed on
the vehicle.
Once the air pressure is released in the
entrance door and latching cylinders by either
one of these valves, unlock then push or pull to
open the entrance door.
The usual rotary valve is located in the stepwell.
(Figure 22)
FIGURE 22: STEPWELL ENTRANCE DOOR RELEASE
One PP1 valve is placed on the lateral console.
Pull to release air. (Figure 23)
FIGURE 23 LATERAL CONSOLE ENTRANCE DOOR
RELEASE (PP-1).
Additionally, a “push to exhaust” control valve is
located in the front service compartment.
Push two seconds to release air. The PP1 valve
on the lateral console will pop up.(Figure 24)
FIGURE 24: FRONT SERVICE COMPARTMENT
ENTRANCE DOOR RELEASE.
13.1 EMERGENCY DOOR RELEASE
SYSTEM INSPECTION
Test each valve periodically to confirm proper
operation. Replace any defective valve.

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in