Komatsu D85EX-18 Operation & Maintenance Manual page 91

OPERATION
HYDRAULIC OIL TEMPERATURE GAUGE
Hydraulic oil temperature gauge shows the hydraulic oil tem-
perature.
If the indicator is in green range during operations, it is normal.
If the indicator goes beyond red range (A) 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: Engine oil temperature caution lamp (E) shows abnormality display.
Red range (B) position: Engine speed changes to a middle level, hydraulic 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
When the indicator comes close to red range (A) during operation, run the engine at low idle or stop it,
and wait for the hydraulic oil temperature to drop.
Display (H) when temperature is proper: Background (K) of hy-
draulic oil temperature caution lamp lights up in blue.
Display (J) when abnormal: Background (K) of hydraulic oil
temperature caution lamp lights up in red.
FUEL GAUGE
Fuel gauge shows the amount of fuel in the fuel tank.
The indicator should be in the green range during operations.
When the indicator comes close to (A) of the red range during
operation, check and add fuel as necessary.
(A) to (B): Red range
(A) to (C): Green range
REMARK
When the indicator is in red ranges (A) to (B), fuel level caution
lamp (D) lights up in red.
The correct fuel level may not be displayed for a short time after the starting switch is turned to ON position, but
this is not abnormal.
EXPLANATION OF COMPONENTS
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