TM 5-3810-306-10
Section II - EQUIPMENT DESCRIPTION
EQUIPMENT
CHARACTERISTICS,
CAPABILITIES
AND FEATURES
The crane is fully self-contained. All functions are either
electrically or hydraulically controlled and hydraulically
operated. Main functions include:
a.
Raising and lowering the boom.
b.
Extending and retracting the boom.
c.
Raising and lowering loads with the
hoist(s).
d.
Swinging the boom.
e.
Extending
and
retracting
the
outrigger beams and stabilizers.
A diesel engine provides drive power for the hydraulic
pumps and also drives a compressor and an alternator
which supply air and electrical power for control,
accessory and lighting systems. The engine also
provides power to the axles through a remote mounted,
six-speed (forward and reverse) transmission to drive the
crane. Planetary drive axles provide four-wheel drive.
Axle steering is accomplished through hydraulic
steer cylinders.
The carrier frame features an integral fifth wheel, to
which the rear axle is mounted, to allow the axle to pivot.
Axle pivot lockout is automatic when the superstructure
rotates more than five degrees in either direction from its
straight ahead position. The carrier frame has towing
lugs located front and rear.
Air and hydraulic flow and electrical power are
transferred from the carrier frame to the superstructure
by swivels located at the center of rotation. Hydraulic
cylinders activate the elevation, telescope and outrigger
systems. The hoist and swing systems are driven by
hydraulic motors.
The superstructure is capable of 360- degree continuous
rotation in either direction. The crane is equipped with a
two-section boom. Lifting is provided by a main hoist
and an auxiliary hoist.
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