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4-8-4-5-proverka-zazorov-mezhdu-kanavkami-porshnya-i-porshnevymi-kolcami.html
4.8.4.5. Check of gaps between flutes of the piston and piston ringsCheck of a gap between piston rings and flutes
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1 – piston ring;
2 – piston;
3 – set of probes |
Arrangement of piston rings in flutes of the piston of the engine of fashion. 2106
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1 – piston;
2 – top compression, ring;
3 – lower compression ring;
4 – oil scraper ring |
Device for removal and installation of piston rings
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1 – handle;
2 – ledges;
3 – emphasis;
4 – captures
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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
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Piston ring
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Height, mm
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Face adjusting gap, mm
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The top compression
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1,478 – 1,490
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0,045 – 0,077
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The lower compression
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1,978 – 1,990
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0,025 – 0,057
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| Oil scraper |
3,937 – 3,937
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0,020 – 0,052
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Sets of piston rings
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Name of a set
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Set
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Nominal diameter of a ring in the compressed state, mm
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VAZ-2106-70 engine
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Nominal, standard
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21011 – 1000100
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79
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| Increased: on 0,4 mm |
21011 – 1000100-21
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79,4
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Increased: on 0,7 mm
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21011 – 1000100-22
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79,7
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| Increased: on 1,0 mm |
21011 – 1000100-23
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80
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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.
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