Removal of a head of the block of cylinders. Audi A4 (from 2001 to 2005 release)
Service of Audi A4 from 2001 to 2005 release.
1. Operation and maintenance of the car
2. Engine
2.1. General information
2.2. Predvaritlny checks
2.3. Mekhanichsky part (petrol engines 2,0l)
2.3.1. Removal of the engine
2.3.2. Removal and installation of a poliklinovy belt
2.3.3. Removal and installation of a belt pulley of the crankshaft
2.3.4. Removal and installation of a gear belt
2.3.5. Removal and installation of a sealing flange and flywheel / the conducted disk
2.3.6. Replacement of manzhetny consolidation of the crankshaft 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 the conducted disk
2.3.10. Removal and installation of a bent shaft
2.3.11. Removal and a press fitting of the needle bearing in the crankshaft
2.3.12. Removal and installation of an asterisk
2.3.13. Dismantling and assembly of pistons and rods
2.3.14. Head of the block of cylinders
2.3.15. Removal and installation of the valve of 1 system of change of phases of gas distribution
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. Check of a compression
2.3.20. Repair of the valvate mechanism
2.3.21. Removal and installation of the phase shifter
2.3.22. Removal and installation of cam-shafts
2.3.23. Replacement of oil scraper caps (at the established head of the block of cylinders)
2.3.24. Check of the directing plugs of valves
2.3.25. Replacement of manzhetny consolidation of a final cam-shaft
2.4. Lubrication system
2.5. Cooling system
2.6. System of injection
2.7. System of production of the fulfilled gases
2.8. Mechanical part (petrol engines 3,0; 3,2 l)
2.9. Mechanical part (petrol engines of 4,2 l)
2.10. Mechanical part (diesel engines of 2,0 l)
2.11. Tables
3. Transmission
4. Running gear
5. Steering mechanism
6. Brake system
7. Onboard electric equipment
8. Body
9. Schemes of electric equipment
 







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2.3.17. Removal of a head of the block of cylinders

NOTE
After installation it is necessary to install all fasteners of cables removed or which are cut off at dismantle again.

Replace the polluted engine oil.
When using sealant you monitor characteristics and an expiration date.

Fig. 2.54. Engine casing


Remove a casing of the engine (fig. 2.54).
Open a cover of a broad tank of the cooling system.

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 the noise-insulating screen (fig. 2.44).

Fig. 2.45. Fastening of a forward noise isolation


Weaken quick disconnect couplings 1 and 2 and remove a forward noise isolation (fig. 2.45).
Merge cooling liquid.
Take off a gear belt.

Fig. 2.146. Weakening of a bolt of fastening of an asterisk of the camshaft


Weaken a bolt of fastening of an asterisk of the camshaft (use a counterkey) (fig. 2.146).

Fig. 2.147. Removal of a belt pulley of a cam-shaft two-gripping stripper


Remove a belt pulley of a cam-shaft a two-gripping stripper (fig. 2.147).

Fig. 2.148. Fastening of a back cover of a gear belt


Turn off a back cover of a gear belt from GBTs (fig. 2.148).
Disconnect a wire of weight 1.

Fig. 2.68. Weight wire, motor guard and hose of an absorber


Disconnect the vacuum tube going to the amplifier of brakes from a motor board 2 (fig. 2.68).
Disconnect a hose of an absorber 3.

Fig. 2.69. Water hoses and fastening of a broad tank of the cooling system


Disconnect water hoses 1 and 2 and turn off fastening of a broad tank of the cooling system (fig. 2.69).
Disconnect the shtekerny socket going to the sensor of a signaling device of the OZh low level below on a broad tank of the cooling system.

Fig. 2.70. Electric socket of the sensor of pressure of pressurization and left hose of nadduvochny air


Disconnect the electric socket from the sensor of pressure of pressurization of 1 (fig. 2.70).
Disconnect the left hose for nadduvochny air 2.

Fig. 2.51. Air ducts to the intercooler and to a turbocharger


Disconnect вохдуховод 1 to a turbocharger on the right below (fig. 2.51).
Disconnect an air duct 2 to the intercooler from a radiator frame.

Fig. 2.80. Inlet hose of the air filter / turbocharger and electric sockets


Disconnect electric sockets 1 and 2 and release a cable (fig. 2.80).

Fig. 2.149. Fastening of the giving oil highway of a turbocharger and its support


Turn off the giving oil highway of a turbocharger from the engine 1 (fig. 2.149).
Turn off a bolt 2 support of a turbocharger.
Disconnect the giving oil highway of a turbocharger.

Fig. 2.150. Fastening of the return oil pipeline


Remove the return oil pipeline from a turbocharger (fig. 2.150).

Fig. 2.151. Turbocharger support bolt


Weaken a bolt of 1 support of a turbocharger on 2 turns (fig. 2.151).
Remove an inlet pipe.
Remove the catalyst.
Uncover GBTs.

Fig. 2.152. Sequence of weakening of bolts of fastening of GBTs


Weaken bolts of fastening of GBTs, maintaining the sequence shown in the figure 2.152.

NOTE
Check whether all hoses and wires between the engine, a body and the transmission are disconnected.

Remove a head of the block of cylinders.


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

2.3.18. Installation of a head of the block of cylinders