PREVOST H3-41 Maintenance Manual page 717

To open the door, the switch must be pushed
towards the front of the coach and held in
position. When the door reaches the fully
opened position, the system will keep pressure
in the cylinder locking the door in that position.
The door can be stopped in any position by
releasing the switch. The door is not locked in
position when not fully opened or closed.
FIGURE 24: ENTRANCE DOOR CONTROL SWITCH
If the door has been locked with the key, a lever
on the door can be moved to unlock.
Emergency Exit Valves
•
From inside the vehicle, an emergency exit valve
located near the door on the dash panel,
releases the pressure from the lock cylinder.
From the exterior, an emergency exit valve
located in the front service compartment, also
releases the air from the lock cylinder.
FIGURE 25: INTERIOR UNLATCH AIR VALVE
FIGURE 26: EXTERIOR UNLATCH AIR VALVE
18599
Without Air and/or Without Electricity
If the air pressure drops while the coach has or
hasn't any electricity, the spring loaded cylinders
will unlatch the door. In such a case, unlock the
door by moving the lever on the door or by using
the key, then open the door manually.
With Air but Without Electricity
From inside the vehicle, turn the emergency exit
valve to the "UNLOCK" position. Move the lever.
From the exterior, turn the emergency exit valve
to the "UNLOCK" position. Open the door. Close
it, lock with the key and reset the outside
emergency exit valve to the "NORMAL" position.
• Door Cycle Speed Adjustment
To do any adjustment, remove the two panels
located next to the door hinge, as well as the
door's upper hinge control.
CAUTION
PA1621 Maintenance Manual All Series | Revised Sept 2019
SECTION 18b: X3 SERIES BODY
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