TM 9-2320-392-10-1
M1089A1 MATERIAL HANDLING CRANE (MHC)
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OPERATION - Continued
DETERMINE REQUIRED MHC SETTINGS FROM RANGE DIAGRAM - Continued
Table 2. MHC Range Diagram Summary.
DISTANCE LOAD IS
BOOM
HEIGHT OF BOOM
MAXIMUM LOAD
FROM MHC
ANGLE
7 ft (2.1 m)
20 degrees
13 ft (5.0 m)
11,000 lbs (4,994 kgs)
4 ft (1.2 m)
55 degrees
16 ft (4.9 m)
11,000 lbs (4,994 kgs)
1
Maximum load is only 5,000 lbs (2,270 kgs) when boom is centered over rear of
vehicle.
PREPARE M1089A1 MHC FOR USE
WARNING
Do not operate Material Handling Crane (MHC) unless outriggers are
set up and MHC is level from side to side. Failure to comply may
result in serious injury or death to personnel.
Set up stifflegs (refer to WP 0034 00) if load is swung around rear
of vehicle. Vehicle could turn over if not supported. Failure to
comply may result in serious injury or death to personnel.
Operator must keep load in sight at all times while operating
Material Handling Crane (MHC). Load may
unexpectedly shift.
Failure to comply may result in serious injury or death to personnel.
Do not operate Material Handling Crane (MHC) and 15K Self-
Recovery Winch (SRW) at the same time. Lock may unexpectedly
shift. Failure to comply may result in serious injury or death to
personnel.
CAUTION
Hydraulic oil level must be at FULL line and hydraulic shutoff and return
valves must be opened before Material Handling Crane (MHC) is operated.
Failure to comply may result in damage to equipment.
NOTE
MHC will not operate if hydraulic or electrical systems fail. Refer to Table 2 to
verify that MHC settings are correct for load being lifted. Refer to WP 0066 00
if hydraulic or electrical systems fail. MHC can operate on side slope up to 5
degrees.
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