TM 5-3810-307-10
5-12.15
Emergency Crane Stowage Procedure. In the event of a hydraulic system
failure (pumps, diesel engines, etc.), it will be necessary to lower a suspended load, retract the
boom, swing the boom over the front and retract the outriggers in order to tow the crane to a
maintenance area.
To return the crane to the travel mode from; elevated and extended boom; over-the-
side; with suspended load and outriggers extended and set; proceed as follows:
a.
Stop the crane's engine, apply the parking brakes, place the transmission in
N (neutral), and engage the main hydraulic pump drive.
b.
Verify that the carrier cab IGNITION Switch (50, Figure 5-1) is in the 0 (off)
position, and that the hydraulic pump drive is disengaged.
c.
Place the superstructure cab IGNITION Switch (56, Figure 5-2) is in the 0
(off) position.
d.
Open the cover of the Auxiliary Power Unit (APU) control box, and verify that
the APU power switch is in the "Off" position.
e.
Verify that the battery disconnect switch is in the on position, and turn the
superstructure cab IGNITION Switch (56) to the 3 (accessory) position.
NOTES
(1)
To conserve battery electrical power, turn off the
APU when not operating a crane function. If the
crane's battery power fails while performing the
following procedures, turn off the APU and connect
another vehicle having a compatible NATO slave
intervehicular cable and a 24 VDC electrical system
to the NATO slave receptacle located on the left side
of the APU. Turn on the APU and with the engine
running, continue the emergency load lowering
procedure.
(2)
The LMI system may not be operational, depending
on the failure experienced.
(3)
It may be necessary to by-pass the LMI system when
performing certain functions.
(4)
Operate only one crane function at a time.
(5)
It will be necessary to shift the diverter valve control
lever to the function(s) to be operated, i.e., "hoists", or
boom "lift/telescope". Swing, outrigger, and steering
functions are available with the control lever in either
position.
5-107
