Audi Workshop Service and Repair Manuals

Silencers - exploded view

1 -

Bolt

q

23 Nm

2 -

Mounting

q	Renew if damaged

q	Check preload → Chapter „Stress-free alignment of exhaust system“

3 -	Centre silencer

q	Combined in one unit with rear silencers as original equipment. Can be renewed individually for repair purposes

q	For removal on A5 Cabriolet: remove diagonal struts → Fig.

q	Cutting point → Chapter

q	Align exhaust system so it is free of stress → Chapter

4 -	Rear silencer

q	Combined as one unit with centre silencer and tailpipe as original equipment

q	For removal on A5 Cabriolet: remove diagonal struts → Fig.

q	Centre silencer, rear silencer and tailpipe can be renewed separately as required

q	Cutting point: centre silencer / rear silencer → Chapter

q	Cutting point: rear silencer / tailpipe → Chapter

q	Align exhaust system so it is free of stress → Chapter

5 -

Gasket

q

Renew

6 -

Nut

q

23 Nm

7 -	Catalytic converter

q	Protect against knocks and impact

q	Removing and installing:

t	left-side (vehicles with manual gearbox) → Chapter

t	left-side (vehicles with multitronic gearbox 0AW/automatic gearbox 0B6) → Chapter

t	right-side (vehicles with manual gearbox/multitronic gearbox 0AW) → Chapter

t	right-side (vehicles with automatic gearbox 0B6) → Chapter

q	Mounting components → Fig.

8 -

Nut

q

23 Nm

9 -

Gasket

q

Renew

10 -	Front silencer

q	With flexible joint; do not bend flexible joint more than 10° – otherwise it can be damaged

q	Removing and installing → Chapter

q	Align exhaust system so it is free of stress → Chapter

11 -	Clamp (front)

q	Installation position → Fig.

q	Before tightening, align exhaust system so it is free of stress → Chapter

q	Tighten bolt connections evenly

12 -

Nut

q

23 Nm

13 -

Bolt

q

23 Nm

14 -

Clip

15 -

Tailpipe

q	Combined in one unit with rear silencer as original equipment. Can be renewed individually for repair purposes

q	Cutting point → Chapter

q	Aligning → Chapter

16 -

Mounting

q	Renew if damaged

q	Check preload → Chapter „Stress-free alignment of exhaust system“

17 -

Nut

q

Renew

q

20 Nm

18 -	Clamp (rear)

q	For separate replacement of centre and rear silencers

q	Installation position → Fig.

q	Before tightening, align exhaust system so it is free of stress → Chapter

q	Tighten bolt connections evenly

19 -

Nut

q

23 Nm

20 -

Nut

q

Renew

q

23 Nm

21 -

Bolt

q

23 Nm

22 -

Mounting

q	Renew if damaged

q	Check preload → Chapter „Stress-free alignment of exhaust system“

Installation position of front clamps –  Install clamps so that the bolt ends do not protrude beyond bottom of clamp. l  Installation position: bolt connections face outwards.

Installation position of rear clamps –  Install clamps so that the bolt ends do not protrude beyond bottom of clamp. l  Installation position: bolt connections face forwards.

Components of mountings for catalytic converter - vehicles with manual gearbox/automatic gearbox 0B6 1 -  Nut, 23 Nm 2 -  Spacer sleeve 3 -  Compression spring 4 -  Washer 5 -  Bolt 6 -  Bolt, 23 Nm 7 -  Spacer sleeve 8 -  Buffer 9 -  Bracket 10 -  Bolt, 23 Nm 11 -  Bracket   Note The illustration shows the right-side mountings; the left-side mountings are symmetrically reversed.

Components of mountings for catalytic converter - vehicles with multitronic gearbox 0AW 1 -  Nut, 23 Nm 2 -  Spacer sleeve 3 -  Compression spring 4 -  Washer 5 -  Bolt 6 -  Bolt, 23 Nm 7 -  Spacer sleeve 8 -  Buffer 9 -  Bracket 10 -  Bolt, 23 Nm 11 -  Bracket   Note The illustration shows the right-side mountings; the left-side mountings are symmetrically reversed.

Diagonal struts (A5 Cabriolet) –  Remove diagonal struts -1- and -2- when removing centre silencer and rear silencer unit. –  Install diagonal struts → Rep. Gr.42.