Engine Operation
i06545704
Engine Operation
SMCS Code: 1000
Proper operation and maintenance are key factors in
obtaining the maximum life and economy of the
engine. If the directions in the Operation and
Maintenance Manual are followed, costs can be
minimized and engine service life can be maximized.
The time that is needed for the engine to reach
normal operating temperature can be less than the
time needed for a walk-around inspection of the
engine.
After the engine is started and after the engine
reaches normal operating temperature, the engine
can be operated at the rated rpm. The engine will
reach normal operating temperature faster when the
engine is at rated speed. The engine will reach
normal operating temperature faster when the engine
is at low-power demand. This procedure is more
effective than idling the engine at no load. The engine
should reach operating temperature in a few minutes.
Gauge readings should be observed and the data
should be recorded frequently while the engine is
operating. Comparing the data over time will help to
determine normal readings for each gauge.
Comparing data over time will also help detect
abnormal operating developments. Significant
changes in the readings should be investigated.
Engines rated for constant speed use are allowed to
complete a starting sequence, an operation at a
single constant speed, and a shutdown sequence.
Every time the engine is run, each of these
operations should occur only once. The starting
sequence and shutdown sequence can include a
short period of operation at the low idle speed for
purposes of warming up and cooling down the engine
or driven equipment. The emissions type approval is
not valid for operation of a constant speed engine in
a manner different from that described above.
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Engine Warm-up
SMCS Code: 1000
1. Run the engine at low idle for three to five minutes,
or run the engine at low idle until the jacket water
temperature starts to rise.
More time may be necessary when the
temperature is below −18°C (0°F).
2. Check all of the gauges during the warm-up
period.
3. Perform another walk-around inspection. Check
the engine for fluid leaks and air leaks.
4. Increase the rpm to the rated rpm. Check for fluid
leaks and air leaks. The engine may be operated
at full rated rpm and at full load when the jacket
water temperature reaches 60°C (140°F).
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Fuel Conservation Practices
SMCS Code: 1000; 1250
The efficiency of the engine can affect the fuel
economy. Caterpillar's design and technology in
manufacturing provides maximum fuel efficiency in
all applications. Follow the recommended procedures
in order to attain optimum performance for the life of
the engine.
• Avoid spilling fuel.
Fuel expands when the fuel is warmed up. The fuel
may overflow from the fuel tank. Inspect fuel lines for
leaks. Repair the fuel lines, as needed.
• Be aware of the properties of the different fuels.
Use only the recommended fuels.
• Avoid unnecessary idling.
Shut off the engine rather than idle for long periods of
time.
• Observe the service indicator frequently. Keep the
air cleaner elements clean.
• Ensure that the turbochargers are operating
correctly so that the proper air/fuel ratio is
maintained. Clean exhaust indicates proper
functioning.
• Maintain a good electrical system.
One defective battery cell will overwork the alternator.
This will consume excess power and excess fuel.
• Ensure that the belts are properly adjusted. The
belts should be in good condition.
• Ensure that all of the connections of the hoses are
tight. The connections should not leak.
• Ensure that the driven equipment is in good
working order.
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SEBU7125-13
Operation Section
Engine Operation
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