Digging Operations - Komatsu WA500-6H Operation & Maintenance Manual

Operation

Digging operations

WARNING
Always set the machine facing directly to the front when car-
rying out digging or scooping operations. Never carry out
these operations with the machine articulated.
When the machine is traveling or the work equipment is
raised, the moment that the E.C.S.S. switch is turned ON,
the work equipment will move.
If operations are carried out with the E.C.S.S. switch left at
the ON position, the moment that the E.C.S.S switch is
turned ON, the work equipment will move.
NOTE
If the tires slip, the tire life will be reduced, so do not allow the
tires to slip during operation.
Loading piled soil or blasted rock
When loading piled soil or blasted rock,drive the machine for-
ward as follows to load. To prevent cutting of the tires caused by
the tires slipping, be careful of the following points during the
operation.
Always keep the operating jobsite flat, and remove any fallen
rocks.
When working with stockpiles, operate the machine in 1st or
2nd gear; when loading blasted rock operate the machine in
1st gear.
1. When driving the machine forward and lowering the bucket,
stop the bucket at height (A) approx. 30 cm (12 in) from the
ground, then lower it slowly.
REMARK
If the bucket hits the ground, the front tires will come off the
ground, and the tires will slip.
2. Shift down immediately in front of the material to be loaded.
When completing the shift down, depress the accelerator
pedal at the same time and thrust the bucket into the mate-
rial.
REMARK
To reduce fuel consumption, depress the accelerator pedal the
minimum possible amount. If it is depressed fully, the fuel con-
sumption will increase, but there will be no increase in the
amount loaded.
3. When the material is in a stockpile, keep the cutting edge of
the bucket horizontal; when loading blasted rock, have the
bucket tilting slightly down.
Be careful not to get blasted rock under the bucket. This will
make the front tires come off the ground and slip.
WA500-6H – VEAM430100
3.3 Operation
A
GK043180
3-129