Komatsu PC138USLC Operation & Maintenance Manual page 70

OPERATION
DETAILED CONTROLS AND GAUGES
Basic Check Monitors
CAUTION
These monitors do not guarantee the condition of the machine.
Do not simply rely on the monitor when carrying out checks before starting (daily inspection). Always get off the machine and
check each item directly.
Displays basic items among the check before starting items that must be checked before starting the engine. If there
is any abnormality, monitor for the location of abnormality will light up.
(1) Engine oil level monitor (2) Maintenance interval monitor
Engine Oil Level Monitor
Monitor (1) warns the operator that the oil level in the engine oil pan
has dropped.
If oil level in the engine oil pan is low, the lamp lights up red, so
check the oil level, and add oil.
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