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3.1 FEATURES
3.1.1 A HARD-WORKING MACHINE
‡ This machine mounts the highly evaluated SAA6D170E-2 engine with an output of 551.63 kW (740
HP)/2100 rpm for more powerful travel performance.
‡ The retarder performance when traveling downhill has been improved by using an exhaust brake
in addition to the conventional wet-type multiple-disc retarder to give an improvement of 30% in the
absorption torque.
3.1.2 The machine that anyone can drive and everyone wants to drive
‡ Every effort has been made to improve operator comfort and ease of operation, and the latest
mechatronics controls are used to provide a smooth, powerful drive, excellent travel stability, and
superb driving comfort.
All-range electronic modulation and auto suspension (auto suspension is optional for overseas
specification machines), etc.
‡ A spacious, quiet, comfortable cab with composed coloring is used to reduce operator fatigue.
3.1.3 Trouble-free machine
‡ Even if any failure should occur, all the mechatronics systems are equipped with self-diagnostic
functions.
‡ For example, the transmission control writes the failure codes to memory in the order that they occur,
so troubleshooting is made much easier.
3.2 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:
‡ Idle the engine for 5 minutes after starting it up.
‡ Avoid operation with heavy loads or at high speeds.
‡ 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.
3. INTRODUCTION
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