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Cooling system.

Arrangement.

The cooling system of the engine is a liquid, closed-type, with a compulsory circulation of a liquid.

The device for controlling the cooling liquid temperature is set in the cylinder head, and the arrow indicator is set on the control panel.

Cooling system should be filled with a special liquid TOSOL A-40, which has anticorrosive and antifoaming additives. The temperature of crystallization is -40°С.

Concentrated antifreeze TOSOL A has a temperature of crystallization
-20°С, it gets properties of TOSOL A-40 after mixing it with distilled water in the ratio 54 % of antifreeze TOSOL A and 46 % of distilled water.

The period of changing the cooling liquid at normal operation of the automobile is once in two years or after running 60000 kms. Cooling liquid is merged through the aperture in the cylinder block in the bottom part of the radiator, which is closed by a conic fuse.

The hot liquid is moved from the cylinder head 4, passes through the radiator 8 or the bypass pipe 9, which depends on the position of valves of the thermometer 10 and goes into the pump 5 from which it goes to cylinder block 11.

The cabin heater 1 is connected to the cooling system, the liquid which goes from the cylinder head through the crane 2 is moved to the pump, and also warms the cabin carburetor throttle 3, the liquid which acts from the jacket of the exhaust pipe and is removed through a by-pass pipe of the heater to the pump.

For compensation changes of volume and pressure the expand tank 7 is used, it is connected to the radiator neck by amounts and closed by a fuse
6.

The pump.

The case 6 and the cover of the pump 2 casted of an aluminium alloy.
The platen 3 is bossed to the bearing 7. The pig-iron wing 5 is pressed to the platen of the bearing. The end of the wing, which joins the sealing ring of the seal, is tempered by currents of high frequency on the depth of
3mm. The nave 9 of the pulley 8 of the driving fan 12 is bossed to the platen of the bearing.

The seal 4 of the pump consists of the external brass case, rubber cuff and the sealing ring made of a graphitic mix and pressed by a spring to the end of the wing. The seal is bossed to the cover of the pump.

The bearing of the pump fills with greasing during the manufacturing, so it doesn’t need greasing during operation.

The fan.

The fan is a plastic, four-blade, enclosed in a case. Blades are wing- type and have a variable radius of installation. For the reduction of noise the step of blades is non-uniform, blades end approximately. The fan 12 with the pulley 8 fastens to the nave 9 by three bolts 11.

The drive of the fan is carried out by the crankshaft, which transmits its rotation with the help of the wedged-type belt.

The Thermometer.

The necessary thermal condition of the engine is provided by the thermometer. The thermometer has two intake connecting pipes, and the connecting pipe 1 is connected by the hose 1 to the final connecting pipe displaced on the cylinder head. The connecting pipe 13 is connected to the bottom of the radiator tank. The outlet connecting pipe 6 is connected by the transmitter 2 to the entrance of the pump.

The thermosensitive element of the thermometer consists of the glass 4, bossed in the basic valve 9 which is nestled by the spring 7 to the saddle
8. The rubber insert 5 is built-in the glass which can move along the piston 12 which is fixed in the holder 10 by the nut 11. The bypassing valve 2 is established in the holder 15 and is supported by the spring 3 resting in the bottom of the glass 4.

Between walls of the glass 4 and the rubber lining 5 there is a rigid filler 14. There are two versions of thermometer fillers which differ by the expansion factor. Thermometers with such fillers have different temperatures of the opening of the basic valve (80°С or 30°С). This temperature is specified on the bottom of the thermometer.

Feed system.

Arrangement.

The air filter - dry type, consists of the case 5, a cover 2 and filtering element.

The air filter has two intake connecting pipes; a connecting pipe 4 for grasping the air in the summer period and a connecting pipe 6 for grasping the air, warmed by exhaust pipe in the winter period.

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