Emergency Exit Release Bar; Emergency Exit Window Adjustment; Fixed Window Replacement - PREVOST H3-41 Maintenance Manual

SECTION 18a: H3 SERIES BODY
FIGURE 32: H3-45 COACH
An emergency exit window can be opened by
pulling the lower part of the release bar to
disengage the safety latches, and then by
pushing out the window frame (Figure 34).
Emergency operating instruction decals are
affixed under each emergency exit window. To
close the window, pull back the window and push
down the release bar.
FIGURE 33: H3-41 COACH

16.2 EMERGENCY EXIT RELEASE BAR

The emergency exit release bar system is
generally maintenance free.
It has been designed to answer the twenty pound
resistance criteria for opening the emergency
window. If this handle should be replaced:
1. Remove the screws and bolts securing it to
the emergency exit window;
2. To install a new release bar, reverse the
procedure.
NOTE
Check the legal twenty pound maximum
resistance to be
regulations.
44
PA1621 Maintenance Manual All Series
18519
18520
sure to comply with
|
Revised Sept 2019
FIGURE 34: EMERGENCY EXIT WINDOW

16.2.1 Emergency Exit Window Adjustment

Emergency exit windows should be checked
periodically for easy opening and closing. Pulling
the lower part of the release bar with both hands
placed near the safety latches should disengage
both locks on the window simultaneously. The
tension required to release the window should
not exceed twenty pounds (9 kg) of force.
The release bar mechanism itself has been
designed such as no adjustments are necessary.
If too much effort is required to disengage the
locks when pulling the release bar or if the
window doesn't close tightly or rattles, check for
interference by foreign objects or nearby parts
into mechanism, such as the microswitch, rubber
seal, wires, etc. Correct situation immediately.
NOTE
Tangs on the lock must be in a horizontal
position.

16.3 FIXED WINDOW REPLACEMENT

When it becomes necessary to replace the glass
of a fixed-type window, follow this procedure:
1. Unscrew the decorative plate and the bottom
window bar in order to get access to the
window retaining devices.
2. Remove the window bottom retaining bolts.
3. Push the glass window out ninety degrees
(90°).
WARNING
The window may fall out.
4. The window is free and can be unhooked.
5. Reverse procedure to install a new one.
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