Komatsu WA380-8, Operation & Maintenance Manual, Page: 107 / 432

(7) DEF level gauge
(8) Fuel gauge (9) R.H. meter
(10) L.H. meter
SPEEDOMETER
The speedometer indicates the travel speed of the machine.
ENGINE TACHOMETER
The engine tachometer indicates the engine speed.
If the engine speed is higher than the allowable range during
operation, the engine overrun caution lamp lights up in red. At
the same time, the centralized warning lamp lights up and
alarm buzzer sounds intermittently.
Operate the machine with moderate engine speed and travel
speed.
ENGINE COOLANT TEMPERATURE GAUGE
Engine coolant temperature gauge shows the engine coolant
temperature.
When the indicator is in the white or green range during opera-
tion, it is normal.
If the indicator is in the red range, the engine coolant tempera-
ture caution lamp lights up in red, and action level “L02” is dis-
played. At the same time, the centralized warning lamp lights
up and alarm buzzer sounds intermittently.
The engine output is then limited automatically.
Place the machine in a safe place, set the directional lever and
directional selector switch (if equipped) to NEUTRAL position (N), and run the engine at a medium speed with
no load until the engine coolant temperature caution lamp goes out.
TORQUE CONVERTER OIL TEMPERATURE GAUGE
The torque converter oil temperature gauge indicates the tor-
que converter oil temperature.
When the indicator is in the green range during operation, the
retarder oil temperature is normal.
If the indicator is in the red range, the torque converter oil tem-
perature caution lamp lights up in red, and action level “L02” is
displayed. At the same time, the centralized warning lamp
lights up and alarm buzzer sounds intermittently.
The engine output power is then limited automatically.
OPERATION EXPLANATION OF COMPONENTS
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