PREVOST H3-41 Maintenance Manual page 736

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SECTION 18b: X3 SERIES BODY
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 40).
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.
Emergency Exit Release Bar
The emergency exit release bar system is
generally
maintenance
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. Install a new release bar, reverse the
procedure.
NOTE
Check the legal requirement of twenty pound
maximum resistance to be sure to comply with
FMVSS No 217.
FIGURE 40: EMERGENCY EXIT WINDOW
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.
52
PA1621 Maintenance Manual All Series | Revised Sept 2019
free.
It
has
been
18008
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.
Emergency Exit Window Replacement
NOTE
Window is heavy and fragile. Use suction cup
handles and help from teammates.
Prepare a soft material surface to receive the
removed window.
FIGURE 41: EMERGENCY EXIT WINDOW REMOVAL
FIGURE 42: EXTRUSION LOCK LOCATION

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