T039860E
Auxiliary Hoist
Hoisting Up and Down
WARNING
WARNING
Check the control mode of the boom telescoping/auxiliary hoist control lever before operating the lever by making sure that the auxiliary hoist operation indicator lamp is lit; otherwise the crane can move independent of your intent and create a hazard.
Moving the control levers abruptly is dangerous because it causes the load to bounce and swing. This practice could result in damaging the crane, and injury or death. Be sure to operate the levers slowly and carefully. Never attempt to pull a load sideways or inward by operating the winch. Doing so may not only cause the boom failure but also overturn the crane. When a load is lifted, the boom deflects and the working radius increases, possibly exceeding the allowable limit. This result causes an overload condition. Stop lifting when the load just clears
Operate the boom telescoping/auxiliary hoist control lever and the boom telescoping/auxiliary hoist selector switch to hoist up or down the auxiliary winch. The hoisting speed can be controlled by changing the amount the boom telescoping/auxiliary hoist control lever is moved and by using the accelerator pedal.
the ground, and check the condition of the load, as well as for any sign of overloading, before continuing.
1. Flip the boom telescoping/auxiliary hoist selector switch to the “auxiliary hoist” side. ◆Make sure that the auxiliary hoist operation condition indicator lamp lights up.
◆Since the main and auxiliary winch systems are independent of each other, both winches can be used simultaneously.
Auxiliary hoist operation indicator lamp Boom telescoping/auxiliary hoist control selector switch
Main Hoist OFF
[NOTICE] ◆For single top lift and jib lift, select the correct winch according to the actual operating condition on the load moment indicator. See the “Registering Winch Selection” section of “Load Moment Indicator (AML-L)” in this manual.
REAR
AML
50℃
JIB LOCK
85℃
ON
UEL
H
FREE
F
INT
L
T30428E
2. Operate the boom telescoping/auxiliary hoist con-
Operate the main hoist control lever to hoist up or hoist down the load. To hoist up : Pull the lever rearward. To hoist down : Push the lever forward. To stop : Return the lever to the neutral position. Push (to hoist down)
ON
AML
trol lever. To hoist up: Pull the lever rearward. To hoist down:Push the lever forward. To stop: Return the lever to the neutral position. Boom telescoping/auxiliary hoist control lever
Main hoist control lever
Push (to hoist down)
Neutral (stop)
Neutral (stop) Pull (to hoist up)
Pull (to hoist up)
T24050E T24048E
Hoisting
70
Hoisting
