Komatsu WA480-8 Operation & Maintenance Manual page 271

OPERATION
METHOD FOR AUTO-DIGGING
If the auto-kickdown and auto-digging are combined to use, the operator can operate the machine more easily.
Switch ON and OFF of the auto-kickdown on the monitor. For the method of switching, see "AUTO KICK DOWN
SETTING (3-70)".
• When setting the auto-kickdown to ON
1)
Set the auto-digging switch to ON.
2)
While driving the machine forward, lower the bucket edge
to height (a) of approximately 30 cm above the ground.
3)
Depress the accelerator pedal and thrust the bucket edge
into the stock pile.
The speed is shifted down to FORWARD 1st by the auto-
kickdown, and the auto-digging starts.
REMARK
• If the travel speed is 3 km/h or less during the auto-
digging mode, the boom may rise automatically.
• If the gear is shifted down to 1st by the kickdown
switch, the machine is set in the auto-digging mode as
well.
• When the gear speed is fixed to 1st in the manual shift
mode, if the kickdown switch is pressed, the machine
is set in the auto-digging mode.
4)
If the bucket is fully tilted, the auto-digging mode is finished.
The auto-digging mode can be cancelled by performing the following operations. When the auto-digging
mode is cancelled, the buzzer "beeps".
• When the boom is raised beyond the horizontal position
• When the auto-digging switch is set to OFF
• When the boom control lever is set to "LOWER" position
• When the bucket control lever is set to "DUMP" position
• When the work equipment lock switch is pressed to lock the work equipment (the pilot lamp lights up)
• When the directional lever and directional selector switch (if equipped) are set in a position other than
FORWARD (In this case, the buzzer does not sound.)
MACHINE OPERATIONS AND CONTROLS
3-203