Cooling System; General Information - Perkins 2800 Workshop Manual

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Cooling system

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General information

A pressurised coolant system is used on the engine. This allows the system to operate at a temperature higher
than the boiling point of water and prevents cavitation in the coolant pump.
In normal operation, the coolant pump directs most of the coolant through the oil cooler and into the cylinder
block. The coolant circulates around the cylinder liners and is then directed into the cylinder head where it flows
around the valves and passages for the exhaust gases. The coolant leaves the cylinder head at the front end
and enters the thermostat housing.
When the engine is cold, the thermostats are closed and the coolant flow is directed back to the coolant pump.
When the engine is at normal operating temperature, the thermostats open and the flow is directed to the top
of the radiator. The coolant flows from the top to the bottom of the radiator and then returns to the coolant
pump.
Only the approved coolant mixture should be used in the engine. Refer to the User's Handbook.
Workshop Manual, TSD3450E, Issue 1 111