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TM 3-6665-225-12
(7) Pull cargo shelf into horizontal position.
(10) Press in one binding post (3) of M43
(8) Perform procedures of para 2-9 a through
detector unit and, disregarding polarity, insert
q.
one wire of each telephone cable into binding post
(9) Place rucksack in an upright position.
slot. Release binding post.
(10) Position M43 detector unit (1, fig. 3-5)
(11 ) Repeat (10) above for other binding post
with attached BA3517/U battery (2) on cargo
and remaining wires.
shelf (3) so that AIR FILTER plug (4, fig. 2-4) is
(12) Perform startup and operation proce-
facing away from frame of rucksack (5, fig. 3-5).
CAUTION
3-3. Handcarry and Backpack Systems
Do not block AIR OUTLET.
a. Handy carrying the M43 Detector Unit. T'he
(11) Tie long web strap (4) to right end of
M43 detector unit when handcarried on an opera-
middle bar of rucksack (5). Pass strap across M43
tional mission uses a BA3517/U battery for a
detector unit and attached battery. Turn strap
power source. The BA3517/U battery is secured
fastener loop (6) upward on left side of M43
to the M43 detector unit allowing both units to be
detector unit. Insert long web strap through loop.
transported by the handle of the M43 detector
Pull it until tight.
unit. The M42 alarm unit supplied with the hand-
(12) Pass free end of long web strap around
carry configuration permits the system to be used
top bar, through slot, and pull it tight. Tie free
as a fixed emplacement installation with one
end in overhand knot while maintaining tension.
remotely-located M42 alarm unit.
CAUTION
(1) Perform procedures of paragraph
Do not block AIR OUTLET.
3-2a (1) through (3).
(13) Pass long web strap (4) which is tied to
(2) If M42 alarm unit is to be used, perform
left end of middle bar of rucksack across M43
procedures of paragraph 3-2 d (3) through (6) and
detector unit and battery. Insert this long web
(8) through (10).
strap through strap fastener loop (6) on right side
(3) Perform startup and operation proce-
of M43 detector unit. Keep the long web strap flat
and pull it downward until tight. Then pass its
b. Backpacking the M43 Detector Unit. T h e
free end around itself and pull it tight.
M43 detector when operated in the backpack
(14) Tighten straps to insure that M43
configuration uses a BA3517/U battery for a
detector unit and BA3517/U battery are securely
power  source.  The  M43  detector  unit  and
fastened to rucksack.
BA3517/U battery are secured to a rucksack with
(15) Perform the procedures of paragraph
a cargo shelf. The M42 alarm unit supplied with
2-9 r through x.
the backpack configuration permits the system to
be used as a fixed emplacement installation with
3-4. Vehicular System Installations
one remote-located M42 alarm unit.
Vehicular system installations provide accom-
(1) Perform applicable preoperation pro-
modations for an M43 detector unit, and M42
cedures (para 2-6) and pre-startup procedure
alarm unit, and a BA3517/U battery. Primary
power to operate the equipment is supplied by the
(2) Position cargo shelf (4, fig. 3-4) on the
vehicle's electrical system.  T h e B A 3 5 1 7 / U
rucksack (2).
battery provides power when the M43 detector
(3) Pass short web strap (1) around top and
unit is removed from the vehicle and handcarried.
middle bars of rucksack so that strap is centered
a. General.
between right and left sides of rucksack. The
(1) The M11 alarm system is installed on a
buckle of short web strap must be on load side of
one-quarter-ton utility truck (fig. 3-6). The M43
rucksack and not more than 4 inches from middle
detector unit is installed and connected to a high
bar. Insert plain end of short web strap through
profile mount on the right-front fender of the
buckle. Tighten short web strap as taut as possi-
vehicle. The M42 alarm unit is installed on the
ble.
dash panel.
(4) Tie one end of a long web strap (3) to
(2) The M12 alarm system is installed on a
right end of middle bar of rucksack using a non-
three-quarter-ton truck (fig. 3-7). The M43
slip knot.
detector unit is installed and connected to a high
(5) Tie one end of other long web strap to left
profile mount on the right-front fender of the
end of middle bar of rucksack using a non-slip
vehicle. The M42 alarm unit is installed on the
knot.
right scuff plate in the cab, and a drawer of refill
(6) Pass free ends of long web straps through
kit components is secured to the upright below
adjacent outer slots of cargo shelf (4).
3-5

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