Cooling system
1 - radiator; 2 - thermostat; 3 - thermostat housing; 4 - housing for connecting pipelines; 5 - separating element; 6 - coolant pump; 7 - pipelines of the cooling system; 8 - pipelines for heating the intake manifold; 9; 10 - heating pipelines; 11 – a jellied stopper of a cooling liquid; 12 - temperature sensor
Cooling system - closed type, pressurized, includes a water pump driven by a toothed belt, an aluminum radiator with an integral expansion tank, an electric cooling fan, a thermostat, a heating system, hoses and switches.
The system functions as follows. Cold coolant from the base of the radiator passes through a hose to the pump and is pumped through the main channels of the cylinder block and oil coolers (if any). After the engine cylinders, combustion chambers and valve seats have cooled, the coolant reaches the back of the thermostat, which is initially closed. Also, the coolant passes through the heating system and returns through the cylinder block to the pump.
When the engine is cold, coolant only circulates through the cylinder block, cylinder head and heating system. When the coolant reaches a predetermined temperature, the thermostat opens and coolant flows through the top hose to the radiator. As the coolant circulates through the radiator, it is cooled by airflow when the vehicle is moving or by the radiator fan when parked with the engine running. After reaching the base of the radiator, the coolant cools and the cycle repeats.
The electric cooling fan is controlled by a thermal switch. At a certain temperature of the coolant, the temperature sensor turns on the fan.
Attention! Care must be taken when opening the expansion tank cap on a hot engine, as escaping hot vapors can cause severe burns.
Attention! Do not allow coolant to come into contact with clothing and body paint, otherwise rinse the surface with plenty of water.