Komatsu GD555-5 Operation & Maintenance Manual page 69

OPERATION
EXPLANATION OF COMPONENTS
ENGINE WATER TEMPERATURE CAUTION LAMP
This monitor (1) warns the operator that the engine coolant
temperature has risen.
When it lights up, "E02 ENGINE OVERHEAT" is displayed on the
character display at the same time, and the engine output is
automatically limited.
Run the engine under no load at a mid-range speed until the lamp
goes out.
BATTERY CHARGE CIRCUIT CAUTION LAMP
When the engine is running, this monitor (2) informs the operator
that there is an abnormality in the charging system.
When it lights up, "E03 CHECK RIGHT NOW" is displayed on the
character display at the same time. Move the machine
immediately to a safe place, stop the machine, then stop the
engine and inspect the charging system.
ENGINE OIL PRESSURE CAUTION LAMP
This monitor (3) warns the operator that the engine lubricating oil
pressure has dropped.
When it lights up, "E03 CHECK RIGHT NOW" is displayed on the
character display at the same time, and the engine output is
automatically limited.
Move the machine immediately to a safe place, stop the machine,
then stop the engine and carry out inspection.
BRAKE OIL PRESSURE CAUTION LAMP
This monitor (4) lights up if the oil pressure in the brake circuit goes
below the specified value. When the engine is stopped, the
centralized warning lamp does not light up and the alarm buzzer
does not sound.
After starting the engine, if the brake oil pressure is still below the
specified value even after 30 seconds have passed, "E03 CHECK
RIGHT NOW" is displayed on the character display at the same
time. Move the machine immediately to a safe place, stop the
machine, then stop the engine and carry out inspection.
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