Komatsu PC118MR-8, Operation And Maintenance Manual

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INSTRUMENTS AND CONTROLS
FUNCTIONING
3-12
EMERGENCY WARNING LIGHTS 3
CAUTION
In the event of a red light, switch off the engine immediately or reduce engine speed to idle, check the
parts in question and carry out any necessary corrective action.
Check the status of these indicator lights frequently while the engine is running. In the event of problems indicated
by a red light and the relative warning buzzer, perform the necessary corrective action immediately.
(1) Engine coolant temperature warning light
(2) Hydraulic fluid temperature warning light
(3) Engine oil pressure warning light
(1) Engine coolant temperature warning light
This indicator light (1) informs the operator that the engine
coolant temperature has increased.
If the engine coolant temperature increases excessively, the
indicator light signals the condition with the symbol (C). The
overheat protection system is automatically activated and the
engine speed is reduced.
Stop working and keep the engine running at idle speed until
the indicator light (1) 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
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