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)
2.4. Lubrication system
2.5. Cooling system
2.6. System of injection
2.7. System of production of the fulfilled gases
2.7.1. Separation of the additional and main muffler
2.7.2. Removal and installation of a reception pipe
2.7.3. Free installation of final system
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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2.7.3. Free installation of final system

Cars without tightening collars between additional and main mufflers
Weaken threaded connections of a forward tightening collar.

NOTE
The final system is installed in a cold state.


Fig. 2.295. Scheme of installation of the fastener of an exhaust pipe


Press system of release forward so that preliminary tension on the right fixing loop at the additional muffler made A=5-9 of mm (fig. 2.295).
Evenly tighten threaded connections of a forward tightening collar with the moment of 23 N · m.
Adjust the provision of trailer sections.

Cars with tightening collars between additional and main mufflers
On in cars with tightening collars between intermediate and main mufflers it is also necessary to level the main muffler.
Weaken threaded connections of lobbies and back tightening collars.
Press system of release forward so that preliminary tension on the right fixing loop at the additional muffler made mm A=5-9.
Evenly tighten threaded connections of a forward tightening collar with the moment of 23 N · m.

Fig. 2.296. Scheme of installation of the fastener of the muffler


Press a back part of system of release forward so that preliminary tension on back fixing loops at the back muffler made A=7-9 of mm (fig. 2.296).
Adjust back mufflers horizontally.
Evenly tighten threaded connections of back collars until 23 N · m.
Adjust the provision of trailer sections.

Alignment of trailer sections
Check distance from the left and right exhaust pipes to a bumper:

Fig. 2.297. Alignment of trailer section


distance x at the left = distance x on the right (fig. 2.297).
If necessary modify the size x as follows.

Fig. 2.298. A strut nut between exhaust pipes


Release a strut nut between exhaust pipes (fig. 2.298).
Change distance between mufflers.
Tighten a nut with the moment of 23 N · m.
Check distances at and z from trailer sections to a bumper:
– distance at = more than 20 mm;

Fig. 2.299. Check of installation of trailer section


– z distance = 10–16 mm (fig. 2.299).
If necessary be convinced that the system of release is adjusted freely.

Check of final system on tightness
Start the engine and leave it idle.
Close the ends of trailer sections for the period of conducting check on tightness, for example, by means of rags, traffic jams.
Check connections between GBTs and a final collector, a final collector and a reception pipe, etc. aurally.
Eliminate the revealed thinnesses.


2.7.2. Removal and installation of a reception pipe

2.8. Mechanical part (petrol engines 3,0; 3,2 l)