General information about the cooling system

1. Closed cooling system with forced coolant circulation and expansion tank. The cooling system consists of a cooling jacket (channels inside the cylinder block and head (cylinder block), radiator, expansion tank, pump, thermostat, electric fan, hoses, pipes and other components.

2. The plate type radiator is installed at the front of the vehicle. It consists of upper and lower tanks connected by a core (tubes with heat exchange surfaces in the form of fins). Models with a CVT or automatic transmission are equipped with an oil cooler to cool the working fluid of the CVT or automatic transmission (ATF), located in the lower radiator tank.

3. Excess coolant enters expansion tank (the result of an increase in the volume of liquid when it is heated in the cooling system). The fluid from the expansion tank returns to the radiator when (the temperature in the system drops, as a result of which the radiator is always filled with liquid and at the same time liquid losses are excluded.

4. The radiator cap has two safety valves - steam and vacuum. Steam valve opens to remove steam through the outlet pipe (hose), when the pressure inside the cooling system exceeds the maximum allowable (coolant temperature 110 - 120°C, pressure 74 - 103 kPa). Air (vacuum) the valve opens to reduce the vacuum that occurs in the cooling system after the engine has stopped and the temperature has dropped (pressure - 5kPa or less). Opening the valve allows the coolant to return to the system from the expansion tank.

5. The pump is centrifugal type, installed in the front of the cylinder block and driven by the timing belt.

6. The thermostat is installed in the engine intake pipe. The solid filling inside the thermostat expands when heated (opening valve) and shrinks when cooled (closing valve). Thermostat valve starts to open at target temperature (above 82°С). At a temperature of about 95°C, the valve is fully open.