Komatsu D61EX-24 Operation & Maintenance Manual page 88

OPERATION
METER DISPLAY
MULTI GAUGE
The multi gauge can display various items. As an example, dis-
play of the engine tachometer is explained below.
If the indicator is in green range during operations, it is normal.
When the indicator goes beyond (A) of red range during opera-
tions, the engine speed is too high. Decrease the travel speed
in this case.
(A) to (B): Red range
(A) to (C): Green range
For other items displayed by the multi gauge, see "METHOD
FOR USING MULTI GAUGE".
ENGINE COOLANT TEMPERATURE GAUGE
Engine coolant temperature gauge shows the engine coolant
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 is actuated as follows.
Red range (A) position: Engine coolant temperature caution lamp (E) shows abnormality display.
Red range (B) position: Engine speed changes to a medium speed, engine coolant 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.
When the engine is started, if the indicator is within white range (D), perform the warm-up operation.
Display (H) when temperature is correct: Back ground (K) of
engine 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.
EXPLANATION OF COMPONENTS
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