Komatsu PC290LC-11 Operation & Maintenance Manual page 101

OPERATION EXPLANATION OF COMPONENTS
ENGINE OIL LEVEL CAUTION LAMP
Engine oil level caution lamp warns about drop of engine lubri-
cating oil level.
It displays only while the engine is stopped.
When oil level is low
The caution lamp lights up in yellow and indicates action level
"L01".
The oil level in the engine oil pan is insufficient.
Check the oil level in the oil pan and add oil.
For detail, see "METHOD FOR CHECKING OIL LEVEL IN EN-
GINE OIL PAN, ADDING OIL (3-147)".
If the oil level drops again in a short time, the engine oil may be leaking.
For the inspection and maintenance, ask your Komatsu distributor.
RADIATOR COOLANT LEVEL CAUTION LAMP
Radiator coolant level caution lamp warns about drop of radia-
tor coolant level.
When the coolant level dropped
The caution lamp lights up in yellow and indicates action level
"L01".
The radiator coolant is insufficient.
Check the coolant level in the sub-tank of the radiator and add
coolant.
For detail, see "METHOD FOR CHECKING COOLANT LEVEL,
ADDING COOLANT (3-146)".
If the coolant level drops again in a short time, the coolant may be leaking from the radiator.
For the inspection and maintenance, ask your Komatsu distributor.
CHARGE LEVEL CAUTION LAMP
Charge level caution lamp warns about abnormality in the
charging system while the engine is running.
When abnormal
The caution lamp lights up in red and indicates action level
"L03".
The alarm buzzer sounds intermittently.
Charging is not being performed normally while the engine is
running.
Stop the engine and check the alternator belt for damage, then
ask your Komatsu distributor for inspection and maintenance.
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