Audi A4 with 2001- 2005 of release.
1. Operation and car maintenance service
2. The engine
2.1. The general data
2.2. Predvaritlnye checks
2.3. A Mehanichsky part (petrol engines 2,0л)
2.4. Greasing system
2.5. Cooling system
2.6. Injection system
2.7. System of release of the fulfilled gases
2.8. A mechanical part (petrol engines 3,0; 3,2)
2.8.1. Engine number
2.8.2. Removal and installation semi wedge a belt
2.8.3. Removal and installation damperа крутильных fluctuations
2.8.4. Removal and installation of a forward sealing flange crankshaftа with an epiploon crankshaftа
2.8.5. Removal and installation of a two-mass flywheel (cars from a manual transmission)
2.8.6. Removal and запрессовка the needle bearing of a two-mass flywheel (cars from a manual transmission)
2.8.7. Removal and installation of a conducted disk (cars with АКПП)
2.8.8. Epiploon replacement crankshaftа from outside a chain drive
2.8.9. Removal and installation of the left and right covers приводных chains
2.8.10. Removal and installation of the bottom cover driving chains
2.8.11. A camshaft drive
2.8.12. Removal of a chain drive from cam-shafts, removal and installation натяжителя chains
2.8.13. Removal and installation of a chain of a drive of the oil pump and балансирного a shaft
2.8.14. Removal and installation балансирного a shaft
2.8.15. Removal and installation of a cranked shaft
2.8.16. Shatunno-piston group
2.8.17. Check of a radial backlash of rods
2.8.18. Compression check
2.8.19. Removal and installation of cam-shafts
2.8.20. Replacement маслосъемных caps
2.8.21. Check of basic elements with hydrojacks
2.8.22. Check of directing plugs of valves
2.9. A mechanical part (petrol engines 4,2)
2.10. A mechanical part (diesel engines 2,0)
2.11. Tables
3. Transmission
4. A running gear
5. The steering mechanism
6. Brake system
7. An onboard electric equipment
8. A body
9. Electric equipment schemes
 




9975039f


2-8-16-shatunno-porshnevaya-gruppa.html

2.8.16. Shatunno-piston group

Fig. 2.374. Piston and rod components: 1 – a bolt of fastening of a cover of a rod – 30 Нм + to tighten on +90 (1/4 about.); 2 – a rod cover; 3 – the bearing loose leaf; 4 – a rod; 5 – a piston finger; 6 – a lock ring; 7 – the piston; 8 – piston rings



Check of a thermal backlash of piston rings

Fig. 2.133. Check of a thermal backlash of a piston ring


Insert a ring from above, at right angle to a cylinder wall, to the bottom aperture of the cylinder, on distance about 15 mm from its edge. For this purpose use the piston without rings (fig. 2.133).


Check of a backlash of piston rings on height

Fig. 2.375. Check of a backlash of piston rings on height


Before check clear a ring flute of the piston (fig. 2.375).


Check of pistons
Measure by means of a micrometer for external measurements of 75-100 mm approximately in 10 mm from a bottom edge, at right angle to an axis of a piston finger.
The maximum deviation from the nominal size: 0,04 mm

Check of diameter of the cylinder
By means of precision нутромера 50–100 mm measure in 3 places cross-wise in a cross-section direction And and a longitudinal direction In

Fig. 2.135. The scheme of check of diameter of the cylinder

The maximum deviation from the nominal size: 0,08 mm

Position of installation and compatibility the piston / the cylinder

Fig. 2.376. Labels on the piston bottom


Mark adjusting position and an accessory to the cylinder with a chalk or a waterproof felt-tip pen on the piston bottom (fig. 2.376).

THE NOTE
Do not use кернер or чертилку not to damage a covering of the bottom of the piston.

Adjusting position: the arrow specifies in the piston bottom towards belt pulleys.

Fig. 2.377. Adjusting labels on rods


Mark rods (fig. 2.377).

THE NOTE
Rods replace only with the complete set.
Shatunnye bearings in places do not change.
Before removal mark with a paint rods and шатунные covers under the relation to each other and to the cylinder.

Adjusting position of rods

Fig. 2.378. A direction мысков on the ground surfaces of pairs rods


Мыски on the ground surfaces of pairs rods 1 and 2, 3 and 4. And also 5 and 6 should be are turned against each other (fig. 2.378).

The sizes of pistons and cylinders
* The sizes with a covering (a thickness of 0,02 mm). The covering wears out.


2.8.15. Removal and installation of a cranked shaft

2.8.17. Check of a radial backlash of rods