TM 10-3950-206-12
f. Perform after-operation services (table 3-1).
by the hydraulically operated power steering system.
b. Crane operation.
2-11. Operation of Equipment
(1) Approach load squarely.
a. Vehicle operation.
(2) Stop machine by depressing brake pedal, and
(1) Start the engine (para 2-9).
set parking brake hand lever.
Warning: The crane must be completely
(3) Place the transmission shift lever in neutral
stopped before moving the transmission shift lever
position.
from its FWD to REV position or vice versa.
(4) Position boom with lift, boom extension, and
(2) Move directional shift lever to desired position
slewing controls.
(para 2-7, k).
Note. Make sure winch cable is down when
(3) When operating the crane for any appreciable
extending boom because winch cable e goes up
distance without load attached to the crane hook block,
when boom is being extended.
engage he hook block in the crane hook block eye to
(5) Lower hook block to load with winch control.
prevent oscillation of the block.
(6) When raising load, accelerate engine by
(4) Release the parking brake hand lever (fig. 2-1).
depressing accelerator pedal.
(5) Depress the accelerator pedal (fig. 2-1) until
(7) If load has to be moved, place load against
desired driving speed is attained.
front bumper.
(6) Control the braking of the crane by operation of
(8) To lower load, position load by driving crane to
the service brake foot pedal.
desired spot, whenever possible.
(7) Steering is controlled by the steering wheel,
(9) Lower load by moving winch lever forward.
turning the rear wheels in the desired direction. The
amount of effort required to turn the wheel is minimized
Section V. OPERATION UNDER UNUSUAL CONDITIONS
e. Keep the fuel tank filler cap tight. Service the fuel
2-12. Operation in Extreme Cold (below 0F.)
tank daily.
a. See that antifreeze solution is correct for the
2-14. Operation in Dusty or Sandy Areas
lowest temperature expected (table 2-1).
a. Keep the unit clean and clear of dust as much as
b. Inspect cooling system. Correct or report any
possible. Lubricate in accordance with the approved
leaks.
c. Keep batteries fully charged. After adding water to
lubrication order. Increase the frequency of lubrication of
all exposed wearing surfaces.
the batteries, run the engine for at least one hour.
Note. Clean exposed surfaces frequently. Sharp sand
d. Keep the fuel tank filler cap tight to prevent
mixed wit oil makes an excellent abrasive.
condensation in the tank and lines.
b. Clean the hoist cable, sheaves, and telescoping
e. Empty the fuel strainer bowl and replace.
boom frequently with an approved solvent to minimize
f. Lubricate in accordance with approved lubrication
wear.
order.
c. After operation, blow loose sand and grit from the
g.
Allow engine to reach normal operation
unit. Inspect universal joints, drive shaft, tie rods, and
temperature before applying load.
steering system pivot pins.
2-13. Operation in Extreme Heat
Wash with an approved solvent and relubricate.
a. Inspect cooling system to see that it is clean and
d. Service the air cleaner and all filter units daily
free flowing. Keep coolant level in radiator at height
specified (para 2-1, b(8)).
e. Keep the fuel tank filler cap tight. Service the fuel
b. Keep radiator fins free from insects, leaves, dirt,
tank daily (para 3-8).
and other obstructions.
f. Clean the crane hydraulic tank breather cap daily.
c. Keep fan belt adjusted properly and see that there
is no obstruction of air to the fan.
d. Open side panels of the engine housing to provide
as much ventilation as possible.
2-6
