chain when the master clutch is engaged. However, the drumshafts do not
turn the drums or the swing gear until the proper clutch is engaged by the
operator.
The engine drives a hydraulic control pump which provides hydraulic
power to the control valves in the operator's cab. The control pump
supplies hydraulic oil to the crawler extension/retraction valves mounted on
the car body. These valves direct oil to the side frames from extension
cylinders.
T h e engine drives a pump mounted at the front of the engine which
t r a n s m i t s power to two variable displacement pumps, these pumps supply
power to the crawler motors.
Initial publications are commercial manuals and two of
Publications:
S e e Appendix I.
e a c h are overpacked with the end item.
Department of the. Army publications will be forthcoming and will
be available through your normal publication supply system.
Attachments such as Pile drive, Fairlead, Jib, 10'
Attachment:
Extensions (inserts), Clamshell/dragline buckets, Shovelfront/Backhoe are
n o w considered major items of supply. They are authorized by TDA/TO&E
by line numbers. A list of attachments used with this crane is shown as
Append ix H.
Personnel:
MOS requirements (AR 611-201)
a . Crane Operator MOS 62F30
Mechanic Org. MOS 62B20
b.
Mechanic DS/GS MOS 62B30
c.
