Komatsu H70051 Series Operation & Maintenance Manual page 93

OPERATION EXPLANATION OF COMPONENTS
ENGINE OVERRUN CAUTION LAMP
The engine overrun caution lamp warns the operator that the
engine speed is higher than the allowable range.
When the caution lamp lights up in red, the centralized warning
lamp lights up and the alarm buzzer sounds intermittently.
If the engine speed increases more, action level "L02" is dis-
played.
Operate the machine with moderate engine speed and travel
speed.
RADIATOR COOLANT LEVEL CAUTION LAMP
Radiator coolant level caution lamp warns about drop of radia-
tor coolant level.
If the caution lamp lights up in yellow and action level "L01" is
displayed, inspect the coolant level in the reservoir tank and
add coolant.
See "METHOD FOR CHECKING COOLANT LEVEL, ADDING
COOLANT (3-156)".
If it occurs again in a short time, the coolant may be leaking
from the radiator. Ask your Komatsu distributor for inspection
and maintenance.
CHARGE LEVEL CAUTION LAMP
Charge level caution lamp warns about abnormality in the
charging system while the engine is running.
If the battery is not charged properly while the engine is run-
ning, the caution lamp lights up in red.
At the same time, action level "L03" is displayed and the cen-
tralized warning lamp lights up and the alarm buzzer sounds in-
termittently.
Stop the engine and check the alternator belt for damage, then
ask your Komatsu distributor for inspection and maintenance.
WATER SEPARATOR CAUTION LAMP
The water separator caution lamp warns that water is accumu-
lated in the water separator.
When water is accumulated in the water separator, the caution
lamp lights up in red.
Stop the engine and drain water from the water separator.
For details, see "METHOD FOR CHECKING WATER SEPARA-
TOR, DRAINING WATER AND SEDIMENT (3-154)".
REMARK
The water separator forms one unit with the fuel prefilter.
The water separator is installed at the bottom of the fuel prefil-
ter as detachable condition.
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