Komatsu PC45MR-30403, Operation And Maintenance Manual

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METHOD FOR OPERATIONS AND CHECKS AFTER STARTING ENGINE
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WARNING
• If there is any trouble such as emergency stop, abnormal actuation, etc., turn the starting switch
key to OFF position.
• Perform the warm-up operation for the hydraulic component thoroughly, the control levers and ped-
als are slow to react, and the machine may not move according to the operator's intention if the hy-
draulic component is not warm enough.
Particularly in a cold weather, perform the warm-up operation for the hydraulic component thor-
oughly.
• Do not approach the exhaust pipe of the engine while the engine is running or just after it is stop-
ped.
• 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 component.
In addition, depending on the environment, the method of performing the warm-up operation may differ, so
perform the warm-up operation according to the descriptions given in the appropriate section.
• The hydraulic component is not warmed by simply performing engine warm-up operation.
Perform the warm-up operations for the hydraulic component separately from that for the engine.
Perform the warm-up operation for the hydraulic component, so that the hydraulic oil is also warmed up and
it circulates 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 dam-
aged. 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
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CAUTION
• 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 contin-
ues, it may damage the engine or confuse the operator's sense of driving or lower the braking effi-
ciency, and as a result lead to an unexpected accident. In that case, ask your Komatsu distributor to
check the engine as soon as possible.
• 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.
REMARK
• The smell of the exhaust gas is different from that of the conventional diesel engine because of the exhaust
gas filtering function.
• White smoke may be discharged for a short time immediately after the engine is started or during the after-
treatment devices regeneration in the cold season, but this is not a failure.
OPERATION MACHINE OPERATIONS AND CONTROLS
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