METAL BODY REPAIR - OD1653 - LESSON 2/TASK 1
which are seldom used by the Army, are not ordinarily cut except in shops
especially equipped for that purpose.
(5) Laminated Safety Class. Glass that breaks into small, sharp pieces
is dangerous to use for windows in motor vehicles. Manufacturers have
therefore developed laminated safety glass, which is built up like a
sandwich with a sheet of tough plastic material bonded between two sheets of
glass. If this glass breaks, the plastic stretches when hit, serving as a
cushion and holding the sharp glass fragments firmly. Except for its safety
feature, laminated safety glass has the same properties as the glass from
which it was made. It is used for replacement of practically all flat glass
in Army motor vehicles, such as windows and windshields.
d. Removal of Vehicle Glass. When removing broken glass, carelessness can
result in cuts from sharp edges or flying particles of glass. By careful
removal, the old glass can be used as a pattern for the cutting of new glass
for the vehicle. The method of removing glass will vary according to the
make and model of the vehicle. All Army combattype vehicles have
windshield and door glass enclosed in protecting metal channels or frames.
(1) Combattype vehicles (3/4 ton and larger) windshield hinges are
composed of a rolled strip attached to the underside of the top of the outer
windshield frame and a similar roll on top of the individual metal frame of
the windshield. To separate them (when the windshield is open), slide the
entire metal frame of the windshield glass sideways off the vehicle. They
are reinstalled in the reverse order.
(2) Glass that is installed in channels or frames is removed with a
channel vise. The vise has rubber padded jaws to hold the glass securely
and an adjustable lever to pull the channel from the glass without cracking
or breaking the glass. Careful removal of old glass is the best source of
obtaining accurate patterns. It is necessary to have patterns where glass
installation is concerned. After a pattern is made, it should be plainly
marked according to make and model and kept for further use.
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