Komatsu D85EX-18 Operation & Maintenance Manual page 90

EXPLANATION OF COMPONENTS
When the engine is started, if the indicator is in position (D), perform the warm-up operation. For details, see
"METHOD FOR ENGINE WARM-UP OPERATION (3-164)".
Display (H) when temperature is proper: Back ground (K) of en-
gine coolant temperature caution lamp lights up in blue.
Display (J) when temperature is abnormal: Back ground (K) of
engine coolant temperature caution lamp lights up in red.
POWER TRAIN OIL TEMPERATURE GAUGE
The power train oil temperature gauge indicates the power train
oil temperature.
If the indicator is in green range during operations, it is normal.
If the indicator goes beyond (A) of red range during operations,
the overheat prevention system operates.
(A) to (B): Red range
(A) to (C): Green range
(C) to (D): White range
The overheat prevention system operates as follows.
Red range (A) position: Power train oil temperature caution
lamp (E) shows abnormality display.
Red range (B) position: Engine speed changes to medium speed, power train oil temperature caution lamp (E)
shows abnormality display, and alarm buzzer sounds at the same time.
The overheat prevention system continues to operate until the indicator enters the green range.
NOTICE
If the power train oil temperature gauge tends to enter the red range, shift down one speed range to re-
duce the load on the power train during operations.
Normal temperature display (H): Background (K) of power train
oil temperature caution lamp lights up in blue.
Abnormal display (J): Background (K) of power train oil temper-
ature caution lamp lights up in red.
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OPERATION