Komatsu PC118MR-8 Operation And Maintenance Manual page 97

FUNCTIONING
INSTRUMENTS AND CONTROLS
(2) Hydraulic fluid temperature warning light
This warning light (2) informs the operator that the hydraulic
fluid temperature has increased.
If the hydraulic fluid temperature increases excessively, the
warning light signals the fault condition (C).
Stop working and switch off the engine or run at idle speed until
the warning light returns to normal (B).
q Low temperature (A): Background of indicator (D) is white
q Normal temperature (B): Background of indicator (D) is
blue
q Fault state (C): Background of indicator (D) is red
(3) Engine oil pressure warning light
The warning light (3) illuminates red if the engine oil pressure
drops below normal. If the warning light is red, switch off the
engine immediately and check the lubrication circuit and the oil
level in the sump.
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