Komatsu PC1250-11, Original Instructions Manual

Page: 256 / 452

LOADING WORK
In places where the swing angle is small, work efficiency can
be enhanced by locating the dump truck in a place easily visi-
ble to the operator.
Loading is easier and capacity greater if you begin from the
rear of the dump truck body than if loading is done from the
side.
EFFECTIVE USE OF HYDRAULIC EXCAVATOR
Operation for reducing fuel consumption
(Carbon dioxide emissions reducing operation)
The operating methods for reducing fuel consumption are as follows.
• Avoiding unnecessary engine idle running
• Avoiding hydraulic relief
• Running at low engine speed
• Reducing excavation at high position
• Operation at minimum swing angle
• Travelling at low engine speed
We can provide our users the training for operating methods to increase the productivity and to reduce the fuel
consumption. Contact your Komatsu distributor for details.
METHOD FOR CHANGING BUCKET
k k
WARNING
• When pins are knocked in with a hammer, pieces of metal may fly and cause serious injury.
When performing this operation, always wear protective eyeglasses, hard hat, gloves, and other
protective equipment.
• Place the removed bucket in a stable condition.
• The pin is hit with a strong force to remove, so the pin may fly out and injure people around the
machine. Make sure that there is no one around the machine before starting the work.
• When pulling out the pins, do not stand behind the bucket. In addition, take extreme care not to put
your foot under the bucket since the bucket may fall and cause serious injury.
• Do not get your fingers caught when removing or inserting pins.
• Never insert your fingers into the pin holes when aligning the holes.
Stop the machine on a firm and flat surface and do the work. When performing joint work, appoint a leader and
follow that person's instructions and signals.
1.
Lower the bucket to the flat surface of the ground.
MACHINE OPERATIONS AND CONTROLS OPERATION
3-190