Komatsu SK818-5 Operation & Maintenance Manual page 66

INSTRUMENTS AND CONTROLS
2 - PREHEATING WARNING LIGHT
This warning light comes on when the ignition key is turned to
position « » to start the engine at low temperatures and
goes out automatically after approximately 13 seconds (see
"3.6.2.2 STARTING WITH COLD ENGINE OR IN COLD CLI-
MATES").
3 - ENGINE OIL PRESSURE WARNING LIGHT
This warning light comes on and activates the acoustic alarm
with engine at rest when the starting circuit is energized and
goes out as soon as the engine lubrication circuit is pressu-
rized.
If this warning light remains on or comes on with the engine
running, stop the machine immediately and try to locate the
trouble.
4 - AIR CLEANER CLOGGING WARNING LIGHT
This warning light comes on when the engine air filter needs
cleaning.
5 - HYDRAULIC OIL FILTER CLOGGING WARNING LIGHT
This warning light comes on when the hydraulic circuit filter
needs replacing.
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RWA07160
RWA07130
RWA31710
RWA22340