Removal and installation of cam-shafts. 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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2.3.22. Removal and installation of cam-shafts

NOTE
The lower landing surface of a frame of cam-shafts and the top head of the block of cylinders is forbidden to be processed.

Removal
Bearings of a cam-shaft are built in a head of the block of cylinders and a frame of cam-shafts. Before removal of a frame of cam-shafts it is necessary to weaken a gear belt.
After untwisting of a frame of cam-shafts surely replace manzhetny consolidation of a cam-shaft and a cover.
Uncover GBTs.
Remove the phase shifter.
Take off a gear belt.

Fig. 2.164. Untwisting of a gear wheel of a cam-shaft


Turn off a cam-shaft gear wheel, for this purpose use a countersupport (fig. 2.164).

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


Remove a cam-shaft gear wheel a stripper (fig. 2.147).
Turn off a back part of the protection cover of a gear belt from GBTs.
Unscrew screws of a frame of cam-shafts evenly from edges to the center and remove a frame.
Carefully take cam-shafts up and lay them on a pure lining.
Remove old sealant from a flute of a frame of cam-shafts, and also from the condensing surfaces.

Fig. 2.165. Old sealant on interfaced GBTs surface


Do not allow hit of dirt and the remains of sealant in GBTs (fig. 2.165).

Installation
Check that all yokes were correctly established on shafts of cores of valves.

NOTE
On the condensing surfaces there should not be an oil and lubricant.
Pistons should not be in VMT.

Oil working surfaces of cam-shafts engine.
Accurately enclose cam-shafts in bearings of cam-shafts of a head of the block of cylinders. Cams And the 4th cylinder have to be turned to each other (fig. 2.153).

Fig. 2.153. Combination of dredging


Put uniform, slightly convex roller of sealant in a pure flute of a frame of cam-shafts.

NOTE
Not to apply sealant with too thick layer.
It is necessary to establish and fasten a frame of cam-shafts without breaks as sealant begins to harden right after contact of landing surfaces.
Observe a sealant expiration date.



Fig. 2.166. Installation of a frame of a cam-shaft


Put a frame of cam-shafts so that not to touch the valve of recirculation of OG (fig. 2.166).
Replace bolts of fastening of a frame of cam-shafts.
In several stages slightly twirl screws, beginning from the center to edges.
Tighten bolts finally in the specified sequence.

Fig. 2.167. Sequence of tightening of bolts of fastening of a frame of cam-shafts


Press a cover a mandrel on depth of 1-2 mm (fig. 2.167).
Establish a cam-shaft epiploon.
Establish a back part of the protection cover of a gear belt.
Insert a prismatic spline into a cam-shaft.
Establish a cam-shaft gear wheel. For twisting of the screw hold a cam-shaft gear wheel by means of a support (fig. 2.164).

NOTE
When scrolling a cam-shaft any of pistons should not be in VMT. There is a danger of damage of valves/piston.

Be convinced of correctness of installation of a prismatic spline.
Establish a gear belt.
Install the phase shifter.
Establish a cover of a head of the block of cylinders.
Establish a radiator frame with hinged components.

Fig. 2.96. Fastening of the rubber buffer


Lower a support emphasis against a provorachivaniye at the expense of a body weight on the rubber buffer and tighten nuts (fig. 2.96).
Establish a casing of a front bumper.
Check adjustment of headlights.
Further installation and assembly is carried out in the return to sequence removal.


2.3.21. Removal and installation of the phase shifter

2.3.23. Replacement of oil scraper caps (at the established head of the block of cylinders)