Check of gaps between flutes of the piston and piston rings. AZLK 2141 (Muscovite)
Service and car repairs of 2141 - the Muscovite.
1. General data
2. Engines
3. Power supply system
4. Cooling system
4.1. Thermostat
4.2. Thermal mode of the engine
4.3. Installation of ignition on the engine of fashion. 2106
4.4. Installation of ignition on engines of fashion. 331 and 3317
4.5. Installation of the drive of the distributor of ignition on engines of fashion. 331 and 3317
4.6. Replacement of spark plugs
4.7. Possible malfunctions of engines, their reasons and methods of elimination
4.8. Features of repair of the engine of fashion. 2106
4.8.1. Features of dismantling of the engine of fashion. 2106
4.8.2. Features of assembly of the engine of fashion. 2106
4.8.3. Assessment of technical condition of knots and systems of the engine of fashion. 2106
4.8.4. Conrod and piston group
4.8.4.1. Selection of the piston to the cylinder
4.8.4.2. Control of mass of pistons
4.8.4.3. Vypressovka of a piston finger
4.8.4.4. Check of a gap between the piston and a finger
4.8.4.5. Check of gaps between flutes of the piston and piston rings
4.8.4.6. Assembly of conrod and piston group
4.8.5. Bent shaft and flywheel
4.8.6. Oil pump of the engine
4.8.7. Head of the block of cylinders and valvate mechanism
4.8.8. Camshaft and its drive
4.9. Features of repair of the engine of fashion. 331, 3317 and 3313
5. Transmission
6. Running gear
7. Tires, wheels
8. Steering
9. Brake management
10. Body
11. Electric equipment
12. Electrical circuitries
 










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4.8.4.5. Check of gaps between flutes of the piston and piston rings

Check of a gap between piston rings and flutes

1 – piston ring;

2 – piston;

3 – set of probes

Arrangement of piston rings in flutes of the piston of the engine of fashion. 2106

1 – piston;

2 – top compression, ring;

3 – lower compression ring;

4 – oil scraper ring

Device for removal and installation of piston rings


1 – handle;

2 – ledges;

3 – emphasis;

4 – captures

To check a gap on height between flutes and rings, as shown in rice. Check of a gap between piston rings and flutes, inserting a ring into the corresponding flute.

To check a gap in the lock of piston rings a set of probes, inserting rings into caliber, Yim Yushchy diameter of an opening equal to the nominal diameter of a ring with the admission ± 0,003 mm. In the absence of caliber it is allowed to check a gap. having inserted a piston ring into that cylinder where it will work, and having advanced it the piston on depth of 20-30 mm from bottom edge of the cylinder.

The gap has to be within 0,25–0,4 mm for all rings. If the gap insufficient, follows butt surfaces were washed down and if raised – to replace rings.

Heights and face adjusting gaps of piston rings

Piston ring
Height, mm
Face adjusting gap, mm
The top compression
1,478 – 1,490
0,045 – 0,077
The lower compression
1,978 – 1,990
0,025 – 0,057
Oil scraper
3,937 – 3,937
0,020 – 0,052

Sets of piston rings


Name of a set
Set
Nominal diameter of a ring in the compressed state, mm
VAZ-2106-70 engine
Nominal, standard
21011 – 1000100
79
Increased: on 0,4 mm
21011 – 1000100-21
79,4
Increased: on 0,7 mm
21011 – 1000100-22
79,7
Increased: on 1,0 mm
21011 – 1000100-23
80

In spare parts of a ring are delivered by a set on one engine.

Rings of the nominal size apply when replacing worn-out rings to cylinders of the nominal size. To reduce term extra earnings of rings in already working cylinders, in the top flutes of pistons establish the compression rings which are not covered with chrome.

Rings with the increased diameter install in the cylinders chiseled to the repair size or use them for replacement of worn-out rings in such cylinders.

Rings establish in flutes of pistons so that bore on an external surface of the second (scraper) ring was turned down, and facets on an external surface of an oil scraper ring were turned up (fig. An arrangement of piston rings in flutes of the piston of the engine of fashion. 2106).

At non-compliance with this condition oil can get through rings into the cylinder that will lead to a nagaroobrazovaniye on combustion chamber walls, to smoky release from the muffler and to the increased oil consumption. To put on rings the piston, and also to remove them it is necessary only in special adaptation or the special nippers (fig. Device for removal and installation of piston rings) providing the identical tension of a bend on a ring circle.

After replacement of piston rings during 1000 km of a run the speed of the car should not exceed 60 km/h.

4.8.4.4. Check of a gap between the piston and a finger

4.8.4.6. Assembly of conrod and piston group