Komatsu D37EX-21 - Operations and Checks after Starting Engine; Breaking in the New Machine; Warming up Operations

OPERATION OPERATION
3-81
OPERATIONS AND CHECKS AFTER STARTING ENGINE 3
WARNING
q If there has been any abnormal actuation or trouble, turn the starting switch key to the OFF position.
q If the work equipment is operated without warming the machine up sufficiently, the response of the
work equipment and HST to the movement of the control lever will be slow and the work equipment
may not respond as the operator desires, so always carry out the warming-up operation thoroughly.
Be particularly sure to carry out the warming-up operation thoroughly in cold areas.
BREAKING IN THE NEW MACHINE 3
CAUTION
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 break-in operations, follow the precautions described in this manual.
q If the engine oil pressure caution lamp does not go out within 10 seconds after starting the engine, stop the
engine and investigate the cause.
q Idle the engine for 5 minutes after starting it up.
q Avoid operation with heavy loads or at high speeds.
q Immediately after starting the engine, avoid sudden starts, sudden acceleration, unnecessary sudden stops,
and sudden changes in direction.
WARMING UP OPERATIONS 3
After starting the engine, do not immediately start operations. First, carry out the following operations and checks.
NOTICE
Avoid abrupt acceleration until warm-up run is completed.
Do not run the engine at low idle or high idle for more than
20 minutes.
If it is necessary to run the engine at idle, apply a load or
run at a medium speed from time to time.