3. INTRODUCTION
3.1 INTENDED USE
This Komatsu HYDRAULIC EXCAVATOR is designed to be used mainly for the following work:
l Digging work
l Smoothing work
l Ditching work
l Loading work
See the section “12.14 WORK POSSIBLE USING HYDRAULIC EXCAVATOR” for further details.
3.2 FEATURES
l This Komatsu HYDRAULIC EXCAVATOR is equipped with various controls based on an advanced
electronics system.
o The monitor panel greatly facilitates daily maintenance and self-diagnosis.
o Working mode, travel speed and swing priority are selectable.
o Digging and lifting force can be increased by light-touch control.
(For details, see operation section.)
l Adjustable wrist control levers make operations smooth and easy.
l Air-conditioned operator’s cab assures comfortable operation.
l Low noise level and smart urban-style design and coloring.
l Superb operating performance provided by powerful engine and high-performance hydraulic
pumps.
l Low fuel consumption controlled by an electronic control system provides an environment-friendly
machine.
3.3 BREAKING IN THE MACHINE
Your Komatsu machine has been thoroughly adjusted and tested before shipment.
However, operating the machine under severe conditions at the beginning can adversely affect the
performance and shorten the machine life.
Be sure to break in the machine for the initial 100 hours (as indicated by the service meter.)
During breaking in:
l Idle the engine for 5 minutes after starting it up.
l Avoid operation with heavy loads or at high speeds.
l Avoid sudden starts, sudden acceleration, sudden steering and sudden stops except in cases of
emergency.
The precautions given in this manual for operating, maintenance, and safety procedures are only
those that apply when this product is used for the specified purpose. If the machine is used for a purpose
that is not listed in this manual, Komatsu cannot bear any responsibility for safety. All consideration of
safety in such operations is the responsibility of the user.
Operations that are prohibited in this manual must never be carried out under any circumstances.
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