SECTION II DESCRIPTION AND LEADING PARTICULARS
provides a direct line of vision from the operator to the
19. GENERAL DESCRIPTION.
rear pintle hook. The deck has a non-skid coating and
provides space for a crew and their tool boxes.
110. The tractor is a four-wheel-drive towing tractor
powered by a six cylinder industrial engine. The engine
118. SIDE DECK SEATS. The side deck seats also
output is transferred through the hydraulic transmission,
serve as rear wheel fenders. A guard rail, on the side and
mechanical transmission, and transfer case to the front
rear of these seats, is provided for personnel safety and
and rear axles to provide four-wheel-drive at all times.
serves as a back rest.
The hydraulic steering system consists of front and rear
steering systems controlled independently to provide
two-wheel or four-wheel steering control. The hydraulic
119. RUNNING BOARDS. The running boards consist
of a wide step on each side and supporting panels on the
brake system provides braking on all four wheels. The
rear of the steps. The steps are made of heavy gage,
electrical system powers all electrical components. All
self-cleaning, non-skid steel. The supporting panels provide
systems and components are operated by controls located
a rigid installation and serve as a protection for chassis
within the cab.
111. COMPONENT DESCRIPTION.
120. FENDERS. The front wheel fenders are made of
112. CAB INSTALLATION.
heavy gage steel to support personnel. A non-skid coating
is provided for personnel safety.
113. The cab (2, figure 1-2) is constructed in two
121. STEERING SYSTEM.
halves, which enables the using activity to remove the
upper half cab and the doors during hot weather
122. The tractor is equipped with two types of steering
operation, Both upper and lower half cabs are insulated.
systems (4, figure 1-2) which provide allwheel steering to
The cab is a two-man type with two doors. The door
allow maximum maneuverability in towing operations.
windows are roll-down type, the upper half cab rear
(See figure 1-3.)
window is a sliding type and the windshield is a two-piece
123. FRONT WHEEL STEERING SYSTEM. The front
stationary type. A plexiglass window is located in the
upper front corner above the operator to enable the
wheel steering system utilizes a conventional steering
operator to see above the normal line of vision. The lower
wheel and column, steering gears, hydraulic assist valve,
half cab is constructed of medium gage steel side panels
cylinder, and connecting linkage. This system is a
and heavy gage steel floor plates. The cab floor plates are
hydraulic, power-assist type with a manual override.
flush with the door opening and are treated with a
124. REAR WHEEL STEERING SYSTEM. The rear
non-skid coating. An adjustable, contour seat is provided
wheels are steered by a hydraulic control lever located
for the driver; a non-adjustable contour seat is provided
forward and to the left of the operator. This lever
for a passenger.
actuates the rear-steer valve and cam assembly and allows
the operator to select rear-wheel steering only,
114. ENGINE COMPARTMENT HOOD.
coordinated all-wheel steering, or oblique steering. When
the lever is released, the rear wheels automatically return
115. The hood for the engine compartment (1) is
to the straight-ahead position.
constructed of heavy gage steel. It is provided with a
non-skid coating for safety purposes. Quick release
125 . ELECTRICAL SYSTEM.
catches are provided on both sides for easy access. Both
side panels are louvered to provide engine ventilation.
126. The tractor electrical system (5, figure 1-2) is a
twelve-volt system. All tractors use a single battery. An
116. DECK, FENDER AND RUNNING BOARD
engine mounted, belt driven generator charges the battery
and has a charge rate, at engine idle speed, adequate to
keep the battery charged when all electrical components
117. REAR DECK. The rear deck (3) is made of heavy
are in operation. The electrical system on all tractors is
gage steel plate for adequate support. A cutout at the rear
radio suppressed in accordance with Military Specification
of the deck serves as an access step to the rear deck and
MIL-S-10379. (See figure 1-4 for tractor wiring diagram.)