MACHINE OPERATIONS AND CONTROLS OPERATION
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AFTER STARTING ENGINE 3
q To stop the engine in emergencies or when the actua-
tion of the engine is abnormal or there is any other
trouble, turn the key in the starting switch to the OFF
position.
q Do not carry out operations or operate the levers or
pedal suddenly while the hydraulic oil is at low temper-
ature. Always carry out the warm-up operation for the
hydraulic equipment until the hydraulic oil tempera-
ture monitor displays the correct temperature.
(When the hydraulic oil temperature is low, the low
temperature display shown on the right is given.
(A) Display when temperature is correct: Monitor back-
ground (C) is blue
(B) Display when temperature is low: Monitor back-
ground (C) is white)
q If the warm-up operation for the hydraulic equipment
is not carried out thoroughly, and the machine is
moved, the reaction of the control levers and pedals
will be slow and the movement may not be what the
operator intended. Always warm up the hydraulic
equipment. In particular, in cold areas, always warm
up the hydraulic equipment thoroughly.
There are two types of warm-up operation: warm up the engine and warm up the hydraulic equipment. In addition,
depending on the environment, the method of carrying out the warm-up operation may differ, so carry out the
warm-up operation according to the items given in the appropriate section.
(When only the engine is warmed up, the hydraulic equipment is not warmed up, so always carry out the warm-up
operation for the hydraulic equipment separately from the warm-up operation for the engine. Warm up the hydrau-
lic equipment thoroughly ensures that the hydraulic oil is warmed up and that warm hydraulic oil circulates in all
the control circuits.)
Breaking-in the New Machine 3
Your Komatsu machine has been thoroughly adjusted and tested before shipment from the factory. How-
ever, operating the machine under full load before breaking the machine in can adversely affect the perfor-
mance 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.
q Run the engine at idle for 15 seconds after starting it. During this time, do not operate the control levers or fuel
control dial.
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.
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