PREVOST X3-45 COMMUTER User Manual

SECTION 18: BODY
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual First release Oct 2020
33
FIGURE 42: ENTRANCE DOOR - VIEW FROM INSIDE
Air cylinders with return spring in the cylinder
body are used. Air cylinders are controlled by an
electrically operated solenoid valve energized by
a multiplex module located under the right hand
dashboard.
To open the door, initial action from multiplex
module output energizes the air lock solenoid
valve, venting the door locking cylinders. The
return locking spring pulls the door lock away
from the latch, unlocking the door. Door
movement starts only when pressure in the
central air door lock is below 10 psi. The “air
cylinder open solenoid valve” opens and allows
air to flow to the door cylinders, “the air cylinder
close solenoid valve” exhausts air from the rod
side of the cylinders.
To close the door, initial movement of the switch
energizes the “air cylinder close solenoid valve”
and air flows to the cylinders by their rod side
ports. The “air cylinder open solenoid valve”
exhausts air from cylinders. When the sensor
signals the door as closed, the air lock solenoid
valve is de-energized and loads the door lock
cylinders. The cylinder moves the door lock in a
position which engages a latch on the entrance
door, holding the door positively closed.
Emergency exit valve, which opens the air valve
circuit should be used only in emergencies, or
when the door control system does not function
properly.
Refer to the pneumatic diagram and to page
29.1 of the electrical diagram.
• Operation
Lock or unlock the entrance door from outside
the vehicle by turning the key in the door lock
(counterclockwise to lock, clockwise to unlock).
FIGURE 43: ENTRANCE DOOR LOCK
The entrance door can be unlocked from the
inside using the small lever located on the door.
FIGURE 44: ENTRANCE DOOR INTERIOR LOCK
The air-operated door is controlled from inside
the coach by a control switch located on the
lateral control panel.

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