Komatsu HB365LC-3 Operation & Maintenance Manual page 100

EXPLANATION OF COMPONENTS OPERATION
ENGINE OIL PRESSURE CAUTION LAMP
Engine oil pressure caution lamp warns about abnormality of
engine lubricating oil pressure.
When oil pressure is low
The caution lamp lights up in red and indicates action level
"L03".
The alarm buzzer sounds intermittently.
Stop the operation and move the machine to a safe place, then
ask your Komatsu distributor for inspection and maintenance.
ENGINE OIL LEVEL CAUTION LAMP
Engine oil level caution lamp warns about the drop of engine
lubricating oil level.
It is displayed only while the engine is stopped.
When the oil level is low
The caution lamp lights up in yellow, and action level "L01" is
displayed.
The oil level in the engine oil pan is insufficient.
Check the oil level in the oil pan and add oil.
For details, see "METHOD FOR CHECKING OIL LEVEL IN
ENGINE OIL PAN, ADDING OIL (3-155)".
If it occurs again in a short time, the engine oil may be leaking.
Ask your Komatsu distributor for inspection and maintenance.
ENGINE OVERRUN CAUTION LAMP
The engine overrun caution lamp lights up when engine over-
run occurs.
Since overrun can damage the engine and hydraulic compo-
nents, stop the work immediately and operate at low travel
speed until the overrun caution lamp goes out.
RADIATOR COOLANT LEVEL CAUTION LAMP
Radiator coolant level caution lamp warns about low level of ra-
diator coolant.
When the coolant level is low
The caution lamp lights up in yellow, and action level "L01" is
displayed.
The radiator coolant is insufficient.
Check the coolant level in the reservoir tank of the radiator and
add coolant.
For details, see "METHOD FOR CHECKING COOLANT LEV-
EL, ADDING COOLANT (3-153)".
If the coolant level drops again in a short time, the coolant may be leaking from the radiator.
Ask your Komatsu distributor for the inspection and maintenance.
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