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)
2.9. A mechanical part (petrol engines 4,2)
2.10. A mechanical part (diesel engines 2,0)
2.10.1. Engine number
2.10.2. Candles накаливания
2.10.3. Removal and installation semi wedge a belt
2.10.4. Removal and installation of a tension element semi wedge a belt
2.10.5. Removal and installation гасителя крутильных fluctuations
2.10.6. Removal and installation of an arm of additional units
2.10.7. Removal and installation of a gear belt
2.10.8. Updating of phases timing
2.10.9. Проворачивание crankshaftа to ВМТ
2.10.10. Sealing flanges and a two-mass flywheel / a flywheel
2.10.11. Removal and flywheel installation, cars with multitronic
2.10.12. Shatunno-piston group
2.10.13. Removal and installation of a cover of a head of the block of cylinders
2.10.14. Repair клапанного the mechanism
2.10.15. Removal and installation of cam-shafts
2.10.16. Removal and installation of roller levers
2.10.17. Replacement маслосъемных caps
2.10.18. Check of hydraulic pushers
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
 




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2-10-12-shatunno-porshnevaya-gruppa.html

2.10.12. Shatunno-piston group

Fig. 2.504. 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 lock ring; 6 – a piston finger; 7 – the piston; 8 – piston rings; 9 – a piston ring



Check of a thermal backlash of piston rings

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


Drive a piston 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 (fig. 2.133).
For installation use the piston without rings.


Check of a backlash of piston rings on height
Before check clear a ring flute of the piston.


Check of pistons
Measure approximately in 10 mm from a bottom edge, at right angle to an axis of a piston finger.
Max. A deviation from the nominal size: 0,04 mm

Adjusting position and compatibility the piston/cylinder

Fig. 2.505. Marks of adjusting positions of pistons


The arrow specifies in the piston bottom towards belt pulleys (fig. 2.505).

Check of diameter of the cylinder

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


Spend measurements with the help нутромера 50–100 mm in 3 places cross-wise in a cross-section direction And and in a longitudinal direction In (fig. 2.135).
Max. A deviation from the nominal size: 0,10 mm

Adjusting position of loose leaves of bearings in rods

Fig. 2.506. Adjusting position of loose leaves of bearings in rods



To insert loose leaves of bearings follows in a rod or a rod cover in the middle.
Distance And = 2,5 mm.

Check выступания pistons in the top dead point

Fig. 2.507. Check выступания pistons in the top dead point



At installation of new pistons or a new component of the engine check up выступание all pistons in ВМТ.
Depending on выступания pistons establish a corresponding lining of a head of the cylinder according to the following table.


Marks of a lining of a head of the block of cylinders

Fig. 2.508. Marks of a lining of a head of the block of cylinders: 1 – number under the catalogue of spare parts; 2 – a management code; 3 – apertures


Look rice 2.508.

THE NOTE
If at measurement выступания pistons various values have been received, for compatibility with consolidation use the greatest size.

The sizes of pistons and cylinders

Check of radial palpation of rods
Remove covers of rods.
Clear covers of bearings and a neck.
Put thread Plastigage according to width of the bearing on a radical neck and in loose leaves of bearings.
Put covers of rods and fasten with the moment 30 Нм, do not turn crankshaft.
Again remove covers of rods.
Compare width of measuring strip Plastigage to a scale.
Radial palpation.
The limiting admission of 0,08 mm.
Replace bolts of rods.


2.10.11. Removal and flywheel installation, cars with multitronic

2.10.13. Removal and installation of a cover of a head of the block of cylinders