PREVOST H3-41 Maintenance Manual page 726

SECTION 18b: X3 SERIES BODY
FIGURE 34: ENTRANCE DOOR - VIEW FROM OUTSIDE
Emergency Exit Valves
•
From inside the vehicle, an emergency exit valve
located on the dashboard R.H. side near the
entrance door, releases the pressure from the
lock cylinders. From the exterior, an emergency
exit valve located
compartment, also releases the air from the lock
cylinders.
42
PA1621 Maintenance Manual All Series | Revised Sept 2019
in the front service
FIGURE 35: EXTERIOR UNLATCH AIR VALVE
FIGURE 36: INTERIOR UNLATCH AIR VALVE
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 panels
located next to the R.H door panel hinges.
CAUTION
It is important to make sure that damper does
not reach end of stroke when entrance door is
completely closed or opened. The door
cylinders must stop the door on opening.
Screw or unscrew rod end to adjust if
necessary.
To adjust opening and closing cycle speed on
damper (Figure 37):
7. Remove the damper from the vehicle and
hold it vertically with the lower eye or pin
attachment in a vice. Use clamp plates to
prevent damage.
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