PREVOST X3-45 Multiplex, Руководство по обслуживанию

Страница: 1040 / 1422

Section 18: BODY
PA1562
22
7.7.2 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 19: INTERIOR UNLATCH AIR VALVE
18330
FIGURE 20: EXTERIOR UNLATCH AIR VALVE
12209
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.
7.7.3 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
It is important to make sure that damper does
not reach end of stroke when door is
completely closed or opened. The door
cylinder must stop the door on opening. Screw
or unscrew rod end to adjust if necessary.
To adjust opening and closing cycle speed on
damper (Fig. 21):
1. 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.
2. Fully close the damper while turning the
dust cap or piston rod slowly CCW until it is
felt that the cams of the adjusting nut en-
gage in the recesses of the foot valve
assembly (Fig. 21).
NOTE
In figure 21, if there is an indentation (B) in the
dust cap (C) and the cover shows two holes
(A), the damper is fitted with a bump rubber
(D). If so, fully extend the damper and insert a
round bar or screwdriver through the holes.
Push the bump rubber down and remove.
Remove the split plastic collar (E) (if fitted)
from the piston rod.
3. The damper may have already been
adjusted. Therefore check whether the
damper is adjusted or not by keeping it
closed and gently turning further CCW,
counting at the same time the half-turns until
a stop is felt. Stop turning and do not force.
4. While keeping the damper closed, make two
CW half-turns. In case of prior adjustment,
add the number of half-turns previously
counted. The total range is about five half-
turns. Pull the damper out vertically without
turning for at least 3/8” (1cm) to disengage
the adjusting mechanism. The dust cap or
piston rod may now be turned freely.