DL06K Interim Tire-4 Diesel Engine Commissioning and Operation
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4.4.2. Prevention against freezing of cooling water
When not using anti-freeze, cause the diffusion of corrosion in inner part of the engine,
cause drop the cooling efficiency, cause being frozen to burst in winter, therefore the whole
cooling water should be completely discharged after engine running.
The freezing of cooling water is the reason of fatal damage on the engine, always use
by mixing the anti-freeze. (anti-freeze quantity filled : 40 ~ 50 % of the cooling water)
the anti-freeze is used to prevent cooling water from freeze.
4.4.3. Prevention against excessive cooling
Drop of thermal efficiency caused by excessive cooling increases fuel consumption,
therefore prevent the engine from excessive cooling. If the temperature of coolant
does not reach to normal condition (71 ~ 85 °C) after continuous operation, examine
the thermostat or the other cooling lines.
4.4.4. Lubricating oil
As cold weather leads to the rise of oil viscosity, engine speed becomes unstable after
starting.
Therefore the lubricating oil for winter should be used to prevent this unstability. Refer
to lubricating system section.
4.5. Engine Components Check after Long Time Running
Abrasion, corrosion and degradation of components or assemblies may take place after
operating the engine for an extended period of time. The purpose of checking the engine
after operation is to recover lost capabilities and increase the durability of the engine.
Unpredicted failure may take place at certain weak points after extended operation time,
even under normal engine operation. It is hard to improve the engine capabilities by
correcting one or two parts. It is desirable to correctly and precisely analyze the cause,
and to replace or correct parts that may affect the power and capabilities.
Performing preventive maintenance on the engine ensures safe operation of the engine,
and provides safer operation of the engine.
It is desirable to perform preventive maintenance on the engine parts in the spring, not
in the winter.
Performing engine alignment in the spring season ensures cost effective and fault-free
operation.
The parts listed below affect the power and the capabilities of the machine, and should
be subject to the preventive maintenance.
z Parts affecting intake and exhaust
The air cleaner, the air cooler, the turbocharger, the silencer, the EGR cooler and
band, and the DPF muffler
z Parts affecting lubrication and cooling
The air cleaner, the oil filter, and antifreeze solution.
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