TM 5-3810-306-10
LOCATION
AND
DESCRIPTION
OF
MAJOR
COMPONENTS
Cab Assembly
The cab is all-steel, acoustically-treated, and fully-
enclosed with tinted safety glass window. It contains all
engine and crane controls and indicators for complete
operation of the crane including outrigger controls. The
cab also contains an operators seat, heater, defroster,
electric
windshield
wiper,
dome
light
and
fire
extinguisher.
Engine
A diesel engine is housed in a compartment at the rear
of the frame. The engine provides crane mobility, drives
the hydraulic pumps, charges the air system via the
compressor, and drives the alternator.
Fuel Tank
A 100-gallon (378-liter) capacity fuel tank is mounted on
the left side of the frame between the axles. The filler
cap, located on the side of the tank, is accessible from
ground level.
Torque Converter
The torque converter is mounted on and driven by the
engine. It drives the three-section hydraulic pump, the
two-section
hydraulic
pump,
and
the
converter/transmission charging pump.
Transmission
The transmission is a powershift six-speed (forward and
reverse) type. The transmission is mounted on the
carrier frame near the center of the crane.
Axles
The front and rear axles are drive and steer (axles) with
brakes at all four wheels.
Hydraulic Reservoir
The hydraulic reservoir is located on the right side of the
carrier. The reservoir contains hydraulic system oil and
includes a filter and by-pass valve.
Turntable Assembly and Swing Mechanism
An anti-friction roller bearing supports the superstructure
on the carrier frame allowing 360 degrees continuous
rotation (swing) in either direction. The bearing is driven
by
a
hydraulic
motor
and
gear
reducer/brake
arrangement mounted above the bearing in the turntable.
Boom Assembly
The two-section boom extends from 34.4 to 60.4 feet
(10.52 to 18.46 meters). The boom is mounted on a
turntable and is raised/lowered and extended/retracted
by hydraulic cylinders.
Auxiliary Boom Nose
The auxiliary boom nose consists of a welded extension
with a sheave assembly. The auxiliary boom nose is
mounted on the boom nose. Main Hoist
The main hoist provides power for all load raising and
lowering operations. The main hoist is mounted at the
rear of the boom on the turntable.
Auxiliary Hoist
The auxiliary hoist provides power for all load raising and
lowering operations when the auxiliary boom nose is
installed and the overall ball is being used. The auxiliary
hoist is mounted on the counterweight.
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