New Holland 6010 Service Manual page 32

Engine - Engine and crankcase
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NOTE: A faulty thermostat may cause the engine to operate at too high (hot) or low (cold) operating temperature. If
not replaced this could result in a damaged engine or impaired engine performance. When the thermostat is closed
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a recirculating by pass is provided to allow the coolant to recirculate from the head to the block in order to aid a faster
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warm up. Once the engine has reached its normal operating temperature, the thermostat will open and allow water to
be drawn through the radiator by the pump action. Cooled water then returns to the engine system. Cooling occurs
as the coolant passes down through the radiator cores, which are exposed to the air as it is drawn through the radiator
by the fan.
NOTE: Do not operate an engine without a thermostat. The cooling system incorporates a drain plug, on the left hand
side of the cylinder block. The cap on the radiator is a system pressure cap and should not be removed unless refilling
the system from empty.
The engine cooling fan is mounted on a pump pulley which is belt driven from the crankshaft.
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