Operations And Checks After Starting Engine - Komatsu D475A-5E0 Operation & Maintenance Manual

OPERATION

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.
If the work equipment is operated without sufficiently warming the machine up, response of the work equipment to movement
of the control lever will be slow, and the work equipment may not respond as the operator desires, so always perform the
warming-up operation. Particularly in cold areas, be sure the warming-up operation is completed.
BREAKING IN THE MACHINE
NOTICE
Your Komatsu machine has been thoroughly adjusted and tested before shipment from the factory. However, operating the
machine under full load before breaking the machine in can adversely affect the performance and shorten the machine life.
Be sure to break in the machine for the initial 100 hours (as indicated on the service meter).
Make sure that you fully understand the content of this manual, and pay careful attention to the following points when
breaking in the machine.
Run the engine at idle for 15 seconds after starting it. During this time, do not operate the control levers or fuel
control dial.
Idle the engine for 5 minutes after starting it up.
Avoid operation with heavy loads or at high speeds.
Immediately after starting the engine, avoid sudden starts, sudden acceleration, unnecessary sudden stops, and
sudden changes in direction.
WARMING UP OPERATIONS
NOTICE
Do not perform operations or suddenly operate the levers when the
hydraulic oil is at a low temperature. Always perform the warming-up
operation until the hydraulic oil temperature monitor displays the green
range. This will help extend the machine life.
Do not suddenly accelerate the engine before the machine reaches full
operating temperature.
Do not run the engine at low or high idle for more than 20 minutes. This
will cause oil leaks from the turbocharger oil supply piping.
If it is necessary to run the engine at idle, apply a load from time to time
or run the engine at a mid-range speed.
If engine oil pressure caution lamp (3) flashes or the buzzer sounds
intermittently, stop the engine and check for the cause.
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WARNING
OPERATION