Komatsu WA600-8, Operation & Maintenance Manual, Page: 289 / 554

AUTO-DIGGING
The auto-digging system controls the tilting operation of the bucket automatically to facilitate bucket operation
and reduce the fatigue of the operator.
When operating, see “DIGGING WORK (3-223)”.
METHOD FOR AUTO-DIGGING
1.
While driving the machine forward, lower the bucket edge
to height (a) of 30 cm or less above the ground.
2.
Press the kickdown switch to shift down the gear to FOR-
WARD 1st.
3.
Depress the accelerator pedal and thrust the bucket edge
into the stock pile.
The machine starts auto-digging.
REMARK
• If the travel speed decreases to 3 km/h or less during
auto-digging, the boom may rise automatically.
• If the gear is shifted down to 1st by the auto-kickdown,
the machine is set in the auto-digging mode.
• 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.
The auto-digging is ended when the following conditions or operations are induced or performed, and at the
same time, the automatic tilting operation and automatic boom raising operation are stopped.
• When the bucket is tilted fully by the automatic tilting operation.
• When the boom is raised beyond the horizontal position.
• When the directional lever and directional selector switch are set in a position other than FORWARD
• When “OFF” is selected on “Auto Digging Mode Selection”screen
• When the boom control lever is set to “LOWER” position
• When the bucket control lever is set to “DUMP” position
REMARK
The boom “RAISE” operation and the bucket “TILT” operation can be performed even if the auto-digging is in
operation. When performing the digging work while the priority is given to the productivity, you can perform the
“RAISE” or “TILT” operation more quickly by operating the work equipment control lever.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-221