Komatsu D65EXi-18, Руководство по эксплуатации и техническому обслуживанию

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Sharp turn on a slope When the machine turns sharply on a slope or its direction is changed suddenly by
rock, etc., finishing accuracy can lower.
When turning the machine on a slope, increase the turning radius.
Travel speed is too high. Depending on the type of soil, if the travel speed is too high, the leveled surface may
be uneven.
Decrease the travel speed.
Wrong setting of gain adjust-
ment for blade automatic
control Check if contents of setting of gain adjustment is suitable for soil type, and adjust
again if necessary.
For details, see “ADJUST GAIN OF AUTOMATIC BLADE CONTROL (3-48)”.
Insufficient receiving state of
GNSS satellite Check that sufficient visibility is secured over GNSS antenna.
Check that there is no obstacle such as a tree, building, vehicle, cliff, etc. which
blocks or reflects the signals from the satellite.
BACK GRADE WORK
Leveling work with the back grade mode is turned on in the fol-
lowing cases.
• When dragging back the remaining soil at the wall side by
traveling in reverse
• When erasing track marks
Select “Simple Grading”.
REMARK
When “Simple Grading” is selected, you cannot set the Smooth
Start and the blade load mode.
1.
Start the blade automatic control and turn on the back grade mode.
For details of the method of selecting the back grade mode, see “HANDLE BACK GRADE MODE (3-38)”.
2.
Raise the blade with the blade control lever and move forward enough to hold remaining soil at the back of
the blade.
3.
Place the joystick (steering, directional and gear shift lever) in REVERSE position with brake pedal and de-
celerator pedal depressed, and perform LOWER trigger operation.
For LOWER trigger operation method, see “METHOD FOR ACTIVATING AUTOMATIC BLADE CONTROL
(3-35)”.
4.
After the blade lowers, start reverse travel by releasing the brake pedal and decelerator pedal slowly.
5.
Hold the remaining soil at the back of the blade, carry it to the place lower than the design surface and track
marks to fill there.
When the load on the blade is excessive, the blade thrusts and the track slips.
Adjust the blade by raising or “floating” the blade with the blade control lever as well.
6.
When remaining soil is excessive, drag some soil back from your side by several times.
MACHINE OPERATIONS AND CONTROLS OPERATION
3-64