Isuzu 4LE2 - Coolant Temperature; Hour Meter (Cumulative Operating Hour Counter)

3-7
HANDLING OF ENGINE
Coolant Temperature
Both too high and too low temperatures of the coolant can cause an engine
malfunction. The temperature in the range of approx. 75 - 90°C (167 - 194°F) is
suitable.
When the engine coolant temperature gauge reads an value exceeding the
appropriate temperature, or when the coolant temperature warning light comes on,
an dangerous condition of substantially heated engine can be suspected. For details
of the coolant temperature warning light, refer to the instruction manual from the
machine manufacturer.
When the temperature of the coolant exceeds the appropriate temperature, the fuel
flow is restricted. After stopping the machine operation, decrease the engine speed to
the level equal to the idling speed, and then confirm that the coolant temperature has
dropped to the appropriate temperature before stopping the engine.
CAUTION
Stopping the engine with its overheated condition should be avoided.
Running the engine for a long period of time with a low coolant temperature
not only increases oil and fuel consumption, but also accelerates engine wear,
which may result in an engine failure.
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Hour Meter (Cumulative operating hour counter)
The cumulative time during engine operation is counted. Confirm that it is always
operating while the engine is running.
Perform inspection and maintenance on each part in accordance with the time count
displayed in this hour meter. For details of the hour meter, refer to the instruction
manual from the machine manufacturer.
ADVICE
The hour meter cannot be reset.•
IDE-6450A4500781ALL.indd3-7IDE-6450A4500781ALL.indd3-7 2014/04/1814:19:552014/04/1814:19:55