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
3.12. A camshaft and its drive
3.12.1. Features of the device
3.12.2. Backlash adjustment between levers and camshaft cams
3.12.3. Adjustment of a tension of a chain
3.12.4. Camshaft check
3.12.5. Check of the case of bearings of a camshaft
3.12.6. Натяжитель
3.12.7. A chain of a drive of a camshaft
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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3.12.7. A chain of a drive of a camshaft

The adaptation 67.7824.9521 for check of deterioration (extract) of a chain

1 – a roller;
2 – an adjusting nut;
3 – a counterbalance

The scheme of check of deterioration (extract) of a chain

1 – rollers  

Check and replacement

1. Wash out a chain in kerosene, and then check up a condition of its links.
2. On rollers and cheeks are not supposed сколы, cracks and other damages.
3. At work of the engine the chain is extended. It is considered efficient if натяжитель provides its tension, i.e. If the chain was extended no more than on 4 mm.
4. A chain extract check on the adaptation 67.7824.9521 (fig. the Adaptation 67.7824.9521 for deterioration check (an extract) chains see), having two step rollers 1 which the chain is put on. By means of a counterbalance 3 chain is stretched by effort 294 Н (30 кгс) or 147 Н (15 кгс). The adjusting nut 2 provides parallelism of an axis of a counterbalance concerning the adaptation basis.
5. Stretch a chain effort 294 Н (30 кгс), having put a counterbalance in extreme right position, then reduce effort on 147 Н (15 кгс), having shifted a counterbalance in extreme left position. Repeat once again both operations and define a chain extract on distance L (fig. the Scheme of check of deterioration (an extract) chains see) between axes of rollers. Having measured by a calliper distance between diameters d rollers and having added to it diameter d, receive distance L between axes of rollers.
6. For a new chain distance L between axes of rollers makes
485,755 0,5 Mm. If the chain was extended to 490 mm, it is necessary to replace it.
7. Before installation on the engine grease a chain with engine oil.

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3.12.6. Натяжитель
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3.13. Cooling system