TM 9-2350-247-20-1
THEORY OF OPERATION — Continued
0003 00
TURN SIGNAL KIT
Turn signal kit provides directional turn signals and hazard warning lights on the carrier to comply with regulations for
highway operation. Turn signal lights are added on front of carrier. Right stop light-taillight is replaced with a dual purpose
stop light-taillight. A blackout stop light-taillight is added on right rear of carrier. Reflectors are added on rear of carrier.
Trailer light wiring harness is replaced to provide for adaptation of turn signals on any towed load. A control and flasher are
added in cab. A wiring harness an leads connect the control, flasher, and lights to carrier lighting system.
CARGO AREA (PRIMARY) HEATER KIT
Cargo area (primary) heater kit provides heat for personnel seated in the cargo area. Heater kit contains one of two model
heaters: Model 8460C or MF510A. Both heaters are electrically controlled, multi-fuel burning units. Air is drawn at the top
for heating and combustion. Heated air is forced out the bottom. Combustion gases are discharged outside the carrier. Heater
contains an electric glow plug, detector switch, and an overheat switch. heater has fuel, exhaust, and electrical systems. Fuel
system consists of an electric pump and related fuel lines and fittings. Exhaust system has an exhaust pipe, which is enclosed
in a two-piece heat guard, with related clamps and brackets. Electrical system consists of a wiring harness and a heater
control box.
CARGO AREA (SECONDARY) HEATER KIT
Cargo area (secondary) heater kit is used with the cargo area (primary) heater kit during very cold weather –25
to –65
F
(–31
to –54
C). Kit consists of an insulated cargo compartment cover, heater exhaust closure cone, an insulated escape hatch
cover, foam insulation for cargo door, plywood floor plate covers, and two cloth covers for the personnel seats.
CALIBER .50 MACHINE GUN MOUNT KIT
Caliber .50 machine gun mount kit consists of ring mount M49A1, four supports, pintle, and cradle. Each front support
carries a tray for stowage of an ammo box and straps which secure the ammo boxes. ring mount M49A1 consists of a ring
(track), carriage link, backrest, cradle, and ammo box tray. Carriage link and backrest rotate 360
on the ring and can be
secured in any position by a hand brake. Cradle is installed in the carriage, mounts the machine gun, and permits 360
of
traverse, 80
of elevation, and 20
of depression. Machine gun is fed by a tray supported ammo box mounted on the cradle’s
left side. A canvas deflector mounted under the carriage deflects ejected cartridges away from the operator.
M66 RING MOUNT KIT
M66 ring mount kit consists of ring mount M66, four supports, deflector support, cartridge deflector, four straps, and
attaching hardware. Two front lifting eyes are stowed on a crossbeam in the cargo compartment. Two front supports are
bolted to the lifting eye brackets forward of the windshield. Two rear supports are bolted to brackets on the cab transverse
beam. Each front support carries a tray for stowage of an ammo box and straps which secure the ammo boxes.
M66 ring mount consists of a ring mount and a .50 caliber machine gun mount. M66 ring mount can also be used with 7.62
mm machine gun. The ring mount consists of a series of rings rotating on disks, a backrest, ring brake, and a pintle traverse
lock. The cartridge deflector and deflector support are attached to the ring mount. The .50 caliber machine gun mount
consists of a pintle, cradle equilibrator spring, ammo box tray, and mounting and locking pins.
7.62 MM MACHINE GUN MOUNT KIT
The 7.62 mm machine gun mount kit is used to mount a 7.62 mm machine gun M60 over the carrier cab. Kit consists of a
pintle, platform, and cradle and holder. Kit does not contain a cartridge case deflector or tripod stowage bracket. A pintle
connects other components of a gun mount to the ring mount assembly. A platform supports the 7.62 mm machine gun and
retains the gun with a platform latch. The cradle and holder support and retain a box of 7.62 mm ammo. A screw on the pintle
permits adjustment of maximum depression.
0003 00-17
