Komatsu WA480-8 Operation & Maintenance Manual page 87

OPERATION EXPLANATION OF COMPONENTS
TORQUE CONVERTER OIL TEMPERATURE CAUTION LAMP
The torque converter oil temperature caution lamp warns about
overheating of the torque converter oil.
If the torque converter oil temperature is abnormally high, the
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.
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 under no load until
the caution lamp goes out.
HYDRAULIC OIL TEMPERATURE CAUTION LAMP
The hydraulic oil temperature caution lamp warns about over-
heating of the hydraulic oil.
If the hydraulic oil temperature is abnormally high, the 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.
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 under no load until
the caution lamp goes out.
FUEL LEVEL CAUTION LAMP
The fuel level caution lamp warns about low remaining fuel lev-
el.
The lamp lights up in red if the fuel level is 42 ℓ or below.
Add fuel as soon as possible.
BRAKE OIL PRESSURE CAUTION LAMP
The brake oil pressure caution lamp warns that the brake oil
pressure is below the specified value.
When action level "L03" is displayed
If the brake oil pressure drops below the specified value while
the engine is running, the caution lamp lights up in red.
At the same time, the centralized warning lamp lights up and
alarm buzzer sounds intermittently.
Stop the operation, move the machine to a safe place, stop the
engine, then ask your Komatsu distributor for inspection and
maintenance.
When action level is not displayed and lamp lights up in red
If the brake oil pressure is below the specified value while the engine is stopped, the caution lamp lights up in
red.
When the engine is started, the caution lamp lights up in red until the brake oil pressure increases above the
specified value.
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