TM 9-2320-279-10-1
2-218
Change 8
M977 and M985 Operating Procedures (Cont)
2-18. M977, M985 CRANE OPERATION (MANUAL CONTROLS) (CONT).
WARNING
S
Do not raise vehicle tires off ground with outrigger
jack cylinders. Vehicle could roll causing serious
injury or death. Always chock front wheels when
using outriggers.
S
Crane must be level from side to side. Use of crane
in unlevel position can cause vehicle to tip over
causing possible serious injury or death.
NOTE
S
Operate left and right outrigger jack (LH O/R JACK
and RH O/R JACK) control levers at same time.
S
Crane movement from one lever may be slower than
the other when operating two levers together.
S
Vehicle weight should be off rear axle just enough so
tires still have firm contact with ground but do not
bulge from weight.
(11)
Move left outrigger jack (LH O/R JACK) and right outrigger jack (RH
O/R JACK) control levers (9 and 10) to DOWN position. Lower left
and right outrigger jack cylinders (8) until vehicle weight is off rear
tires.
