Method For Operations And Checks After Starting Engine - Komatsu PW98MR-10 Operation & Maintenance Manual

OPERATION
• When the turbo protect function is canceled, the engine speed is set to the speed for the position of the fuel
control dial.
• The actuation time of the turbo protect function is limited to 20 seconds.

METHOD FOR OPERATIONS AND CHECKS AFTER STARTING ENGINE

• If there has been any emergency stop, abnormal actuation or trouble, turn the starting switch key to
OFF position.
• Do not perform operations nor operate the levers or pedal abruptly while the hydraulic oil is at low
temperature. Always perform the warm-up operation for the hydraulic equipment until the hydraulic
oil temperature caution lamp displays the proper temperature.
• If the warm-up operation for the hydraulic equipment is not performed thoroughly, and the machine
is moved, the reaction of the machine to the operation of the control levers and pedals will be slow
and the movement of the machine may not be what the operator intended. Always warm up the hy-
draulic equipment thoroughly in particular in cold environment.
• Keep away from the exhaust pipe immediately while the engine is running and after stopping the
engine. Keep combustible materials away from the exhaust pipe outlet.
There are 2 types of warm-up operation: warm-up of the engine and warm-up of the hydraulic equipment. In
addition, depending on the environment, the method of performing the warm-up operation may differ. Perform
the warm-up operation according to the descriptions given in the appropriate section.
The hydraulic equipment is not warmed by simply performing engine warm-up operation. Perform the warm-up
operations for the hydraulic equipment and engine separately. Warm-up of the hydraulic equipment thoroughly
ensures that the hydraulic oil is warmed up and that warm hydraulic oil circulating in all the control circuits.
METHOD FOR CHECKING STARTING CONDITION AND UNUSUAL NOISE OF
ENGINE
• When starting the engine, check that the engine causes no abnormal noise and that it starts up easily and
smoothly.
• Check that there is no abnormal noise when the engine is idling or when the engine speed rises slightly.
When there is an abnormal noise at the engine startup and if that condition continues, the engine may be
damaged. In that case, ask your Komatsu distributor to check the engine as soon as possible.
METHOD FOR CHECKING LOW-SPEED RUN AND ACCELERATION OF ENGINE
• When stopping the machine during the normal traveling operation, check that the engine does not hunt or
stop suddenly.
• Check that the engine speed rises smoothly when the fuel control dial is turned to High idle (MAX) position.
• Perform these checks in a safe place, watching out for danger in the surroundings.
• When the engine performs very badly at low idle and in the acceleration and if that condition continues,
it may damage the engine or confuse the operator's sense of driving or lower the braking efficiency,
and as a result lead to an unexpected accident. In that case, ask your Komatsu distributor to check the
engine as soon as possible.
REMARK
• The smell of the exhaust gas is different from that of the conventional diesel engine because of the
exhaust gas filtering function.
• Black or white smoke may be discharged for a short time just after the engine is started in the cold
season, but this is not trouble.
MACHINE OPERATIONS AND CONTROLS
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WARNING
WENAM00061
3-153