Concrete Bucket. A concrete bucket can be attached to the main hoist
cable. The material release lever is operated by personnel on the ground.
This is a Government-furnished attachment.
The Linkbelt drop hammer, diesel engine-driven, and
Berminghammer pile driver systems can be attached to the shafts on the
boom nose using parallel adapter plates mounted on the lead tower.
Mounting lugs, located on brackets on the front of the crane
superstructure, allow attachment of the catwalk for the Linkbelt pile driver
system and the spotter for the Berminghammer pile driver system. The
pile drivers, which are Government-furnished attachments, are operated by
controls that are part of the respective pile driver systems.
The spotter for the Berminghammer pile driver system is controlled by
controls in the superstructure cab and hydraulic power is provided by the
boom hose reel on the crane.
A catwalk bracket, for the Linkbelt pile driver system, may be fabricated to
raise the catwalk platform above the spare tire when swinging the boom
from the 12 o'clock through the 10 o'clock positions. See Appendix L,
Installation/Operation of Pile Driver (Linkbelt), for fabrication information.
Auxiliary Power Unit for Emergency Crane Stowage. An auxiliary power unit
(APU) has been provided on the left side of the crane, just forward of the main
hydraulic tank. The unit provides hydraulic power for returning the crane to the
travel mode after a catastrophic failure of the crane's hydraulic system. It uses the
onboard 24 VDC power supply to operate a small hydraulic pump. The hydraulic
pump supplies the power for swinging/retracting/lowering the boom, lowering the
hook block, lifting and retracting the outriggers, and steering/straightening the
wheels. The APU can also be powered from an external 24 VDC power source via
the NATO slave receptacle coupled to an intervehicular cable.
The auxiliary power unit consists of an electrically-driven hydraulic motor and starter
relay, a two-way diverter ball valve, an on/off switch, and associated hydraulic piping
and check valves.
There are two user interface controls for the APU. First, an on/off toggle switch
turns on and shuts off the electric motor driving the APU hydraulic pump. Second, a
two-way diverter valve determines which crane hydraulic circuit is powered by the
APU hydraulic pump. Refer to Section 5 of this manual for detailed procedures
covering the use of the APU for vehicle recovery operations.