Cooling, heating and ventilation systems

Cooling, heating and ventilation systems

1 The cooling system is of pressurised type, including a pump, an aluminium crossflow radiator, electric cooling fan, and a thermostat. The system functions as follows.

Cold coolant is pumped around the cylinder block, head passages, expansion tank, inlet manifold and heater matrix by the coolant pump. After cooling the cylinder bores, combustion surfaces and valve seats, the coolant is returned to the water pump via the metal tube at the rear of the engine. With the engine cold, the thermostat is initially closed and there is no circulation through the radiator.

• Specifications
• General information and precautions
• Cooling system hoses - disconnection and renewal
• Radiator - removal, inspection and refitting
• Thermostat - removal, testing and refitting
• Electric cooling fan - testing, removal and refitting
• Cooling systen electical switches - testing, removal and refitting
• Cooling pump - removal, inspection and refitting
• Heating and ventilation system - general information
• Heating/ventilation components - removal and refitting