Fig. 4.70. Engine cooling system diagram: 1 - engine; 2 - radiator; 3 - expansion tank with degassing valve after thermostat; 4 - heater radiators; 5 - thermostat bracket; 6 - Thermovalve bracket; 7 - water pump; 8 - air bleed valve; 9 - thermal relay; 10 - additional heater heater (if installed); 11 - oil heat exchanger and oil filter
The closed-type cooling system includes a water pump, radiator, radiator fan with electric cable, thermostat, heater radiator, hoses and sensors. The radiator fan with electric cable is activated when the contact temperature sensor is triggered. On models with automatic transmission, part of the fluid circulates through the transmission fluid heat exchanger. Coolant circulation through the heater radiators occurs constantly.