1 - radiator; 2 - temperature sensor; 3, 17, 20, 22 - hose; 5 - bolt (М6х25); 6 - thermostat in the housing; 7 - gasket; 3 - block head; 9, 13 - ring (20x3); 10 - heating hose; 11 - nut (M6); 12, 15, 16 - bolt; 14 - pipeline; 18 - heating pump; 19 - holder; 21 - air removal screw; 23 - timing cover; 24 - ring (68x5); 25 - engine pump; 26 - pulley; 27 - bolt (M6x16); 28 - nut (MB); 29 - expansion tank; 30 - tank cap
The cooling system is shown in fig. 3.17 and includes:
- cooling jackets (head and cylinder block);
- cross-flow aluminum radiator;
- coolant pump;
- additional pump of the heating and ventilation system with electric drive;
- thermostat;
- coolant pump drive belt;
- expansion tank;
- nine-blade fan with soft coupling;
- heat exchanger of the heating and ventilation system;
- coolant temperature sensor;
- coolant.
When installing the air conditioner on certain vehicle modifications, an additional electric fan is used.
Coolant Safety Precautions
- When performing work on the cooling system, there is a possibility of burns with coolant vapors; all work should be carried out only on a cooled engine. Open the cooling system only when the engine is cold.
- When working on the oil, fuel and coolant circuits, the generator must be protected from possible contamination.
- Coolant is toxic, avoid contact with exposed skin, respiratory mucosa and eyes. Rinse damaged areas with plenty of running water and seek medical attention. The drained liquid cannot be reused, send it for recycling.
The pressure for checking the tightness of the cooling system is 1.5 kgf / cm2. The capacity of the engine cooling system. including the body cabin heater, - 9.8 liters. The coolant replacement interval is every 2 years of operation.