Komatsu PW130ES-6K Operation & Maintenance Manual page 66

OPERATION EXPLANATION OF COMPONENTS
REMARK
A disc brake is installed in the swing motor to mechanically
stop motor rotation.
The brake is always applied while the swing lock is actuated.
METERS
3. ENGINE WATER TEMPERATURE GAUGE
This gauge indicates the engine cooling water temperature.
If the temperature is normal during operation, the green range (A)
(A)
will light up.
If the red range lights (C) up during operation, the overheat pre-
C
(B)
vention system will be actuated.
The overheat prevention system acts as follows.
3
AW34991D
Red range (1) lights up:
Output horsepower drops, and water temperature monitor (3)
flashes.
When red range (2) lights up:
Engine speed is lowered further to low idling, engine water tem-
perature monitor (3) lights up, and alarm buzzer sounds at the
same time.
The overheat prevention system is actuated until the temperature
enters the green range.
When red range (2) lights, if the engine water temperature is
reduced and the fuel control dial is turned to the low idling posi-
tion, the display will be cancelled.
4. FUEL GAUGE
This gauge indicates the amount of fuel in the fuel tank. If the fuel
level is normal during operation, the green range (2) will light up.
If only the red range (1) lights up during operation, there is less
1
2
than 55 liters of fuel remaining in the tank, so check and add fuel.
After the starting switch is turned ON, the correct level may not be
displayed for a moment, but this does not indicate any abnormal-
ity.
AW34992C
When stopping the engine, turn the starting switch ON and check
that the monitor lamps on items A, B, C and D and the meters
light up.
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