VAZ 2101, 2102
1. Specifications
2. Operation and service
3. The engine
3.1. Features of the device
3.2. Possible malfunctions of the engine, their reason and elimination methods
3.3. Removal and engine installation
3.4. Engine dismantling
3.5. Engine assemblage
3.6. Bench tests of the engine
3.7. Engine check on the car
3.8. The block of cylinders
3.9. Pistons and rods
3.10. A cranked shaft and a flywheel
3.11. A head of cylinders and клапанный the mechanism
3.11.1. Features of the device
3.11.2. Removal and installation on the car
3.11.3. Dismantling and assemblage
3.11.4. Clearing of a head of cylinders
3.11.5. Check and grinding of saddles of valves
3.11.6. Valves
3.11.7. Directing plugs of valves
3.11.8. Maslootrazhatelnye caps of directing plugs
3.11.9. Levers of valves
3.11.10. Springs
3.11.11. A lining of a head of cylinders
3.11.12. Check of tightness of a head of cylinders
3.12. A camshaft and its drive
3.13. Cooling system
3.14. Greasing system
4. Fuel system
5. Ignition system
6. Start and gymnastics system
7. Transmission
8. A running gear
9. A steering
10. Brake system
11. An electric equipment
12. A body
13. Features of repair
14. Appendices


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3.11.1. Features of the device

The basic sizes of a head of cylinders, valves and directing plugs

The head of cylinders – the general for four cylinders, is cast from an aluminium alloy. It unified, i.e. identical to engines 2101, 21011 and 2103.

In a head of cylinders запрессованы pig-iron saddles and направляюшие plugs of valves. Working facets of saddles are processed after запрессовки in gathering with a head of cylinders to provide exact соосность facets with apertures of directing plugs of valves.

Apertures in plugs are processed also after запрессовки plugs in a head of cylinders. It becomes for maintenance of accuracy of diameter of an aperture and its arrangement in relation to working facets of a saddle and the valve. In apertures of directing plugs there are spiral flutes for greasing. At plugs of inlet valves of a flute are cut to half of length of an aperture, and at plugs of final valves – on all length of an aperture.

From above directing plugs are put on маслоотражательные caps from тепломаслостойкой rubbers with steel арматурным a ring. Caps cover cores of valves and serve for reduction of penetration of oil in the combustion chamber through backlashes between the directing plug and a valve core.

Each valve has two cylindrical springs: external and internal, leaning against two basic washers. At the top of a spring rest against a plate which is kept on a core of the valve by two crackers having in the combined kind the form of the truncated cone.


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3.11. A head of cylinders and клапанный the mechanism
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3.11.2. Removal and installation on the car