51
Set the pedal to the lock position when
it is not used. If not, if any controls
should be touched accidentally when the
pedal has not been locked, it may cause
serious accident.
Hydraulic breaker
operation time
percentage (%)
3.8 BOOM SWING
The boom swing pedal locates at the position of operator’s right foot, it is used to swing boom,
but the superstructure (cabin, engine, etc) won’t slew when operating this pedal.
A.
Treadle lower side of pedal, swing boom to right side.
B.
Treadle higher side of pedal, swing boom to left side.
You can lock them just by putting the lock pedal on it.
A
――
Unlocked position
B
――
Locked position
The figure to the right shows the maximum swing
distance of boom swing from superstructure central
line.
FIG.3-4
FIG.3-42 Replacement interval (hours)
