Komatsu D37EX-24 Operation & Maintenance Manual page 78

EXPLANATION OF COMPONENTS OPERATION
Stop the operation, move the machine to a safe place, and then ask your Komatsu distributor for the inspection
and maintenance.
When action level "L01" is displayed
The caution lamp lights up in yellow.
Some functions may be restricted from use, but the machine can operate.
When you finish the operation, always perform the inspection and maintenance.
Ask your Komatsu distributor for the inspection and maintenance as needed.
HST OIL PRESSURE CAUTION LAMP
HST caution lamp warns about abnormality of HST oil pres-
sure.
When oil pressure is low
The caution lamp lights up in red, and action level "L02" is dis-
played.
The alarm buzzer sounds intermittently.
Stop operations, and run the engine at low idle or stop the en-
gine until the caution lamp goes out.
If the caution lamp does not go out, ask your Komatsu distribu-
tor for inspection and maintenance.
HST OIL FILTER CLOGGING CAUTION LAMP
HST oil filter clogging caution lamp warns about clogging of the
HST oil filter.
When clogged
The caution lamp lights up in red, and action level "L02" is dis-
played.
The alarm buzzer sounds intermittently.
HST filter is clogged.
Stop the engine, and replace the HST oil filter cartridge with a
new one.
For replacement of the filter element, see "METHOD FOR
CHANGING OIL IN HYDRAULIC TANK, REPLACING HYDRAULIC OIL FILTER ELEMENT, REPLACING HST
OIL FILTER, AND CLEANING HYDRAULIC TANK STRAINER".
If the caution lamp does not go out, ask your Komatsu distributor for inspection and maintenance.
AFTERTREATMENT DEVICE SYSTEM CAUTION LAMP
This warns about defects of the aftertreatment devices system.
When action level "L04" appears on screen.
The caution lamp comes on in red and the alarm buzzer oper-
ates continuously.
Stop the machine immediately and ask your Komatsu distribu-
tor for inspection and maintenance.
When action level "L03" appears on screen.
The caution lamp comes on in red and the alarm buzzer oper-
ates intermittently.
Stop the work and move the machine to a safe area. Ask your Komatsu distributor for inspection and mainte-
nance.
When action level "L01" appears on screen.
The caution lamp comes on in yellow.
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