Cooling System; General; Oil Cooler - Kubota WSM OC60-E2 Workshop Manual

OC60-E2, OC95-E2, WSM

4. COOLING SYSTEM

[1] GENERAL

[2] OIL COOLER

The cooling system comes in two way. The cylinder
block is air-cooled, whereas the combustion area of the
cylinder head is oil-cooled. Air sucked by the flywheel
fan is accelerated in the spiral casing to cool down the
cylinder liner as well as the oil cooler located atop the
spiral casing. The lubricant cooled by the oil cooler, on
the other hand, flows through the return opening of the
cylinder head and back to the crankcase. The trochoid
pump works to force the lubricant to the cylinder head
again to cool the combustion system around.
lubricant finally comes back to the oil cooler. This series
of actions is repeated while the engine is running.
The oil cooler consist of oil carrying tubes and fins.
Heat of heated oil in the tubes is radiated from the tube
walls and fins. Kubota's engines are of louvered
corrugated fin type, featuring light weight and better
cooling/radiating effect.
M-6
ENGINE
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