Recommended Applications - Komatsu H75051 Operation & Maintenance Manual

MACHINE OPERATIONS AND CONTROLS
ACTIONS IF ENGINE STOPS
If the engine stops on a slope, apply the parking brake immediately, lower the work equipment and stop the ma-
chine. For restarting the engine, set the directional lever and the directional selector switch to NEUTRAL posi-
tion (N).
PRECAUTIONS FOR TRAVELING
A long distance travel at high speed can heat the tires extremely and cause premature damage on them. Avoid
it as long as possible.
If the machine must be driven for a long distance, take the following precautions.
• Observe the regulations related to this machine, and drive carefully to assure safety.
• Before driving the machine, perform the checks before starting.
• The most suitable tire pressure and travel speed differ according to the tire type and condition of the travel
surface. Contact your Komatsu distributor or tire dealer.
• The following shows the appropriate tire inflation pressure and travel speed when the machine is equipped
with the standard tires (20.5R25☆) and runs on the paved surface.
Inflation pressure: Front wheel 350 kPa {3.5 kg/cm
Travel speed: 14 km/h
• Check the tire inflation pressure before driving, when the tires are cool.
• Stop the machine for 30 minutes after the travel of 1 hour, and check the tires and each part for any abnor-
mality. Check the oil level and coolant level as well.
When stopping the machine in extremely cold areas, do as follows.
Do not stop the engine abruptly to prevent the radiator coolant temperature from rising sharply. Cool the
radiator coolant down gradually before stopping the engine.
• Always travel with the bucket empty.
• Never travel with calcium chloride or dry ballast in the tires.
PAY ATTENTION TO DEF LEVEL
Before working on a slope or traveling on a rough ground, check DEF tank and add sufficient amount of DEF as
necessary. If the remaining DEF level becomes low, sudden drop of its level or abnormality in urea SCR system
may be detected. If DEF level caution lamp or DEF system caution lamp lights up in red, move the machine to a
level place immediately and add DEF.

RECOMMENDED APPLICATIONS

In addition to the following, it is possible to further increase the range of applications by using various attach-
ments.
DIGGING WORK
• Never perform the digging or scooping operation with the machine articulated. There is a danger
that the machine may tip over.
• Never perform the boom RAISE operation with the machine articulated and the bucket full. There is
a danger that the machine may tip over.
• If the ECSS switch is turned on during travel or with the work equipment raised, the machine starts
moving instantly. Take care.
• If the machine is operated with the ECSS switch ON, the work equipment may start moving at the
moment when the ECSS is actuated. Take care.
• When the boom is below the level position, if the bucket TILT operation is performed further from
the tilt end, the boom may rise. If the bucket DUMP operation is performed just after this, the boom
may lower a little. Take care.
3-194
2
}, Rear wheel 350 kPa {3.5 kg/cm
k k
WARNING
OPERATION
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