Check of a condition of 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
4.9. Features of repair of the engine of fashion. 331, 3317 and 3313
4.9.1. Features of dismantling of engines
4.9.2. Features of assembly of engines
4.9.3. Technical condition of knots and systems of engines of fashion. 331, 3317, 3313
4.9.3.1. Block of cylinders and sleeve of cylinders
4.9.3.2. Conrod and piston group
4.9.3.2.1. Selection of the piston to a sleeve of cylinders
4.9.3.2.2. Check of a condition of piston rings
4.9.3.3. Bent shaft and flywheel
4.9.3.4. Oil pump
4.9.3.5. Head of the block of cylinders and valvate mechanism
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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4-9-3-2-2-proverka-sostoyaniya-porshnevykh-kolec.html

4.9.3.2.2. Check of a condition of piston rings


Arrangement of piston rings


1 – piston;

2 – top compression ring;

3 – lower compression ring;

4 – oil scraper ring

Sign of need of check or replacement of piston rings is the raised consumption of oil (waste), more than 100 g on 100 km of a way. For check piston rings (fig. The arrangement of piston rings) needs to be cleared carefully of a deposit and resinous deposits.

To check a gap on height between a flute and a ring, as shown in the drawing Check of a Gap between piston rings and flutes.

To check a gap in the lock of piston rings a set of probes, having placed a ring in that sleeve in which it worked at distance of 20-30 mm from the lower end face. For the correct installation of a ring it is necessary to advance it in a sleeve a head of the piston used as a mandrel. If when checking comes to light that the gap is insufficient, follows butt surfaces were washed down and if raised – to replace a ring.

Control sizes of piston rings

Piston rings
Height, mm
Face adjusting gap, mm
fashion. 331 fashion. 3317 and 3313 fashion. 331 fashion. 3317 and 3313
Top
compression
1,978 – 1,99 1,490 – 1,475 1,55 – 0,087 0,04 – 0,075
Lower
compression
2,478 – 2,49 1,99 – 975 0,040 – 0,072 0,03 – 0,065
Oil scraper 4,978 – 4,99 2,99 – 2,975 0,036 – 0,068 0,02 – 0,055

At repair of the engine it is necessary to establish repair kits of rings, with not chromeplated top compression ring for providing them to more bystry extra earnings with a surface of sleeves.

If wear of sleeves insignificant, it is necessary to use a repair kit of rings of the nominal size. It is possible until the gap in the lock of rings does not exceed 0,75 mm. If the gap is more maximum permissible – to replace sleeve.

If when checking rings comes to light that the gap is insufficient, follows butt surfaces were washed down and if raised – to replace a ring.
For installation in the sleeves of cylinders chiseled under the repair sizes, in spare parts the rings increased by 0,5 and 1,0 mm are delivered.

The piston rings delivered in the spare part

Designation for engines
Name
fashion. 331
fashion 3317 and 3313
412-1000101
3317.1000101
Set of piston rings on 1 engine of the nominal size
412-1000101 – BR
3317.1000101 – 10
The same, increased by 0,5 mm
412-1000101 – BP
3317.1000101 – 20
The same, increased by 1,0 mm


4.9.3.2.1. Selection of the piston to a sleeve of cylinders

4.9.3.3. Bent shaft and flywheel