45
3‒3 Boom Operation
DANGER
• Do not maneuver or force the boom or
platform into a position where they will
hit the ground, hit stationary objects, or
be used to move objects in an upwards
direction.
• The turntable protrudes 600 mm beyond
the width of the chassis when rotating the
boom.
600 mm
M179F1-1
Fig. 8‒24
• Check that there are no obstacles in the
way before rotating.
• If your field of vision is obstructed, have a
guide assist you.
WARNING
Make sure that no person or obstacle is
around the machine before operating the
boom.
NOTICE
• Before rotating the turntable and boom,
make sure that the rotation lock pin has
been in the unlocked position.
Rotation is locked
Rotation lock pin
Rotation lock pin
Unlocked
M179B12-1
Fig. 8‒25
• The turntable and boom may not rotate
smoothly when the machine is tilted or on
uneven ground.
• If equipped with optional boom motion
alarm, the alarm buzzer will beep regularly
when the boom is being operated.
Use the three joystick controllers for the boom
elevation, telescope and rotation to operate the
boom.
Boom elevation joystick controller
Boom telescope joystick controller
Boom rotation joystick controller
M179D52-1
Fig. 8‒26
3‒3‒1 Boom Elevating
Depress the foot switch and operate the boom
elevation joystick controller to raise or lower the
boom.
Raise
Lower
Boom elevation
joystick controller
Stop
Raise
Lower
M147C321
Fig. 8‒27
3‒3‒2 Boom Rotating
Depress the foot switch and operate the boom
rotation joystick controller to rotate the boom.
Boom rotation
joystick controller
CW
CCW
CW
CCW
(Counter-
clockwise)
(Clockwise)
Stop
M147C421
Fig. 8‒28