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
3.9.1. Features of the device
3.9.2. Выпрессовка a piston finger
3.9.3. Clearing
3.9.4. Piston selection to the cylinder
3.9.5. Backlash check between the piston and a finger
3.9.6. Check of backlashes between piston flutes and rings
3.9.7. Backlash check between loose leaves of a rod and cranked shaft
3.9.8. The control of weight of pistons
3.9.9. Assemblage of shatunno-piston group
3.9.10. Check запрессовки a finger
3.9.11. Parallelism of axes of the bottom head of a rod and a piston finger
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
3.13. 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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3.9.6. Check of backlashes between piston flutes and rings

PERFORMANCE ORDER
Backlash on height
1. A backlash on height between flutes and rings check, inserting a ring into a corresponding flute (1 – a piston ring, 2 – the piston, 3 – a set щупов).
2. The nominal (settlement) backlash for top компрессионного rings makes 0,045–0,08 mm, for the second – 0,025–0,06 mm and for маслосъемного – 0,02–0,055 mm. Maximum permissible backlashes at deterioration – 0,15 mm.
Backlash in the lock
3. A backlash in the lock of piston rings check a set щупов, inserting rings into the calibre having diameter of an aperture, equal to nominal diameter of a ring with the admission ±0,003 mm. It is possible to apply calibre А.96137 to rings of the normal size.
4. The backlash should be within 0,25–0,45 mm for all new rings. A maximum permissible backlash at deterioration – 1 mm. If a backlash insufficient, запилите butt surfaces and if raised – replace rings.

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3.9.5. Backlash check between the piston and a finger
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3.9.7. Backlash check between loose leaves of a rod and cranked shaft