Komatsu H70051 Series Operation & Maintenance Manual page 92

EXPLANATION OF COMPONENTS OPERATION
The engine system caution lamp warns about abnormality in
the engine system.
When action level "L04" is displayed
The caution lamp lights up in red. At the same time, the central-
ized warning lamp lights up and the alarm buzzer sounds con-
tinuously.
Immediately stop the machine and ask your Komatsu distribu-
tor for inspection and maintenance.
When action level "L03" is displayed
The caution lamp lights up in red. At the same time, the central-
ized 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 "L01" is displayed
The caution lamp lights up in yellow.
When you finish the operation, always perform the inspection and maintenance.
Ask your Komatsu distributor for the inspection and maintenance as needed.
ENGINE OIL PRESSURE CAUTION LAMP
Engine oil pressure caution lamp warns about low engine lubri-
cating oil pressure.
If the engine oil pressure drops below the specified value while
the engine is running, the caution lamp lights up in red and ac-
tion level "L03" is displayed.
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.
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.
If the caution lamp lights up in yellow and action level "L01" is
displayed, inspect the oil level in the oil pan and add oil.
See "METHOD FOR CHECKING OIL LEVEL IN ENGINE OIL
PAN, ADDING OIL (3-156)".
If it occurs again in a short time, the engine oil may be leaking.
Ask your Komatsu distributor for inspection and maintenance.
3-26