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with the engine of air cooling;
- Requirements for cooling and lubrication systems;
- classification of cooling and lubrication systems of engines;
- oils used for engines and basic requirements to them.

4 The order of work execution

To write down:
- type and contents of the cooling system;
- type of radiator: pressure of opening of the steam valve and
pressure of opening of the air valve of the radiator tube;
- normal thermal mode of the engine and the temperature of
boiling of the cooling fluid in the system;
- type of thermostat, temperature of start of opening and full
opening of the thermostat valve;
- the capacity of the lubrication system;
- type of filters and ways of their connection to the main line;
- ways of ventilation of a crankcase;
- the main parts rubbing which are lubricated under pressure
and spray;
- valves of the lubrication system, their place of installation,
pressure of opening;
- design and maintenance materials used in cooling and
lubrication systems.
to draw:
- circuit of the cooling system;
- scheme of the lubrication system.

Variant 1 - Engine of HYUNDAI H-1
Variant 2 - Engine of ZIL-130 car.
Variant 3 - Engine of MAZ-6422.
Variant 4 - Engine of LAZ 52523.
Variant 5 - Engine of Skania 114.

Literature: /1,с.67-98; 4,с. 90-115; 6, 91-109/.

5 Control questions
10