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)
2.3.1. Engine removal
2.3.2. Removal and installation semi wedge a belt
2.3.3. Removal and installation of a belt pulley crankshaftа
2.3.4. Removal and installation of a gear belt
2.3.5. Removal and installation of a sealing flange and a flywheel / a conducted disk
2.3.6. Replacement манжетного consolidations crankshaftа on the party of a belt pulley
2.3.7. Removal and installation of a forward sealing flange
2.3.8. Removal and installation of a two-mass flywheel
2.3.9. Removal and installation of a conducted disk
2.3.10. Removal and installation of a cranked shaft
2.3.11. Removal and запрессовка the needle bearing in crankshaft
2.3.12. Removal and asterisk installation
2.3.13. Dismantling and assemblage of pistons and rods
2.3.14. A head of the block of cylinders
2.3.15. Removal and installation of the valve of 1 system of change of phases timing
2.3.16. Removal and installation of a cover of a head of the block of cylinders
2.3.17. Removal of a head of the block of cylinders
2.3.18. Installation of a head of the block of cylinders
2.3.19. Compression check
2.3.20. Repair клапанного the mechanism
2.3.21. Removal and phase shifter installation
2.3.22. Removal and installation of cam-shafts
2.3.23. Replacement маслосъемных caps (at the established head of the block of cylinders)
2.3.24. Check of directing plugs of valves
2.3.25. Replacement манжетного consolidations of a final cam-shaft
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)
2.11. 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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2.3.4. Removal and installation of a gear belt

Removal

Fig. 2.54. An engine casing


Remove an engine casing (fig. 2.54).

ATTENTION
At opening the broad tank can leave hot steam or a hot cooling liquid. Wrap up a cover rags and cautiously open a tank.

Open a cover of a broad tank of system of cooling.

Fig. 2.44. Bolts of an exhaust pipe of an independent additional heater


In cars with an additional heater unscrew bolts of an exhaust pipe of an independent additional heater from шумоизоляционного the screen (fig. 2.44).

Fig. 2.45. Fastening of a forward noise isolation


Loosen the quick disconnect муфты 1 and 2 also remove a forward noise isolation (fig. 2.45).
Merge cooling liquid.
Result a radiator framework in service position.

Fig. 2.102. A tube of a cooling liquid


Disconnect a tube of a cooling liquid (fig. 2.102).

THE NOTE
Before removal semi wedge a belt mark a direction of a course with a chalk or a felt-tip pen. Change of a direction of a course before a maintained belt can lead to its damage.

Mark a course direction semi wedge a belt.

Fig. 2.64. Easing semi wedge a belt


For easing semi wedge a belt turn tension damper on an arrow (fig. 2.64).
Fix a tension element with the help a clamp.
Remove поликлиновый a belt.

Fig. 2.103. Installation of a gear wheel of a cam-shaft on mark ВМТ


Put a cam-shaft gear wheel, having scrolled crankshaft, on mark ВМТ. The mark in a cam-shaft gear wheel should coincide with an arrow on a protective casing of a gear belt (fig. 2.103).

Fig. 2.98. Untwisting of a belt pulley crankshaftа


Remove damper fluctuations / a belt pulley (fig. 2.98).

Fig. 2.104. Bolts of fastening of the bottom part of a protective casing of a gear belt


Turn off bolts of the bottom part of a protective casing of a gear belt (fig. 2.104).

Fig. 2.105. Bolts of fastening of the top part of a protective casing of a gear belt


Unscrew the remained screws of fastening of a protective casing of a gear belt and remove a protective casing of a gear belt from the engine (fig. 2.105).
Mark a direction of movement of a gear belt.
Turn off a tension roller and remove a gear belt.
Then slightly turn crankshaft back.

Installation
The engine should be warm to the touch.

THE NOTE
At прокручивании a cam-shaft any of pistons should not be in ВМТ. Thus there is a danger of damage of valves / of the bottom of the piston.

Impose a gear belt on a gear wheel crankshaftа (observe a course direction).
Fix the bottom part of a protective casing of a gear belt two bottom screws.
Establish damper fluctuations / a belt pulley, having fastened their new screws.
Turn crankshaft and a cam-shaft in position ВМТ of the first cylinder (fig. 2.103).

Fig. 2.106. Packing of a gear belt


Lay a gear belt in sequence: a tension roller, a cam-shaft pulley, a pulley of the water pump and, in last turn, an intermediate roller (fig. 2.106).

THE NOTE
Be convinced of correctness of installation of a tension roller in ГБЦ.


Fig. 2.107. A tension of a gear belt


Pull a gear belt. For this purpose scroll face шестигранным a key the clown to the right (on an arrow) while cut will not be established over мыском (fig. 2.107).
Again loosen the a gear belt.
Now pull a gear belt while cut and мысок will not be the friend opposite to the friend.
Tighten a fixing nut of a tension roller.
Make 2 turns of a cranked shaft in a direction of rotation of a shaft of the engine and again establish the first cylinder in position of the top dead point. It is thus important, that the last 45 (1/8 turns) have been scrolled without a stop.
Repeatedly check up a tension of a gear belt. Nominal position: мысок and cut are the friend opposite to the friend.
Once again check up phases timing.
If marks do not coincide, repeat adjustment of phases timing.
If marks coincide, establish a protective casing of a gear belt (fig. 2.105).
Establish ременный a pulley crankshaftа.
Establish поликлиновый a belt.
Fill in cooling liquid.
Establish a framework of a radiator with hinged components.

Fig. 2.96. Fastening of the rubber buffer


Lower an emphasis of a support against проворачивания at the expense of a body weight on the rubber buffer and tighten nuts (fig. 2.96).
Establish a casing of a forward bumper.
Check up adjustment of headlights.
Establish the sound-proof pallet.
Establish a cover of a motor compartment.

The inhaling moments
* Replace a bolt.
** 90 there correspond turn quarters.
*** Establish on a carving varnish.


2.3.3. Removal and installation of a belt pulley crankshaftа

2.3.5. Removal and installation of a sealing flange and a flywheel / a conducted disk