Komatsu HB365LC-3 Operation & Maintenance Manual page 256

MACHINE OPERATIONS AND CONTROLS
METHOD FOR HYDRAULIC SYSTEM WARM-UP OPERATION
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• Before performing the warm-up operation for the hy-
draulic component, set the swing lock switch on,
check on the monitor that the swing lock is actuated,
then start the warm-up operation.
• Before warming up the hydraulic component, check
that there is no person or obstacle in the area around
the machine, then sound the horn and start the opera-
tion.
• Perform the warm-up operation for the hydraulic com-
ponent until the hydraulic oil temperature caution
lamp displays the correct temperature. (When the hy-
draulic oil temperature is low, the low temperature dis-
play shown in the figure is given.)
• Display (A) when temperature is correct: Caution
lamp background (C) is blue.
• Display (B) when temperature is low: Caution lamp
background (C) is white.
• The warm-up operation for the hydraulic component is
necessary not only for the circuit between the pump
and cylinders and between the pump and motor, but
also for the control circuits. Do not perform the opera-
tion just for one cylinder or motor, or the operation
just in one direction. Perform the operation in all direc-
tions for all the work equipment (boom, arm, and buck-
et), swing, travel, and attachment (if equipped).
• Check the direction of the track frame before operating
the travel lever.
• Perform the warm-up operation sufficiently in cold
weather. If the machine is operated without sufficient
warm-up operation, the work equipment moves slower
than usual, although the upper structure swings at the
same speed as usual. As a result, when performing the
swing and work equipment operations at the same
time, only the swing operation becomes faster.
1.
Check that the engine coolant temperature caution lamp
(1) displays the correct temperature.
• Display (A) when temperature is correct: Caution lamp
background (C) is blue.
• Display (B) when temperature is low: Caution lamp
background (C) is white.
If it displays the low temperature, perform additional warm-
up operation until the engine coolant temperature caution
lamp (1) displays the correct temperature. For details, see
"METHOD FOR
(3-182)".
3-184
WARNING
ENGINE WARM-UP OPERATION
OPERATION