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Separating centre and rear silencers > < Exhaust system on vehicles with front-wheel drive

A4 Mk1

Silencers - exploded view
   
Silencers - exploded view
1 - Nut
q   40 Nm
2 - Clamp (front)
q   Before tightening, align exhaust system so it is free of stress → Chapter
q   Installation position → Fig.
q   Tighten bolt connections evenly
3 - Nut
q   40 Nm
4 - Clamp (rear)
q   For separate replacement of centre or rear silencer
q   Before tightening, align exhaust system so it is free of stress → Chapter
q   Installation position → Fig.
q   Tighten bolt connections evenly
5 - Bolt
q   25 Nm
6 - Mounting
q   Renew if damaged
q   Check preload → Chapter „Stress-free alignment of exhaust system“
7 - Gasket
q   Renew
8 - Nut
q   30 Nm
q   Renew
9 - Gasket
q   Renew
10 - Turbocharger
q   Removing and installing → Chapter
11 - Catalytic converter
q   Protect against knocks and impact
q   Removing and installing → Chapter
q   Align exhaust system so it is free of stress → Chapter
12 - Lambda probe
q   Removing and installing Lambda probe → Rep. Gr.24
13 - Nut
q   25 Nm
q   Renew
14 - Bolt
q   25 Nm
15 - Mounting
q   Mounting components on vehicles with manual gearbox → Fig.
q   Mounting components on vehicles with automatic gearbox → Fig.
16 - Front exhaust pipe
q   With flexible joint
q   Do not bend flexible joint more than 10° – otherwise it can be damaged
q   Align exhaust system so it is free of stress → Chapter
17 - Mounting
q   Renew if damaged
q   Check preload → Chapter „Stress-free alignment of exhaust system“
18 - Bolt
q   25 Nm
19 - Rear silencer
q   Combined in one unit with centre silencer as original equipment. Can be renewed individually for repair purposes
q   Cutting point → Anchor
q   Align exhaust system so it is free of stress → Chapter
20 - Centre silencer
q   Combined in one unit with rear silencer as original equipment. Can be renewed individually for repair purposes
q   Cutting point → Anchor
q   Align exhaust system so it is free of stress → Chapter
21 - Mounting
q   Renew if damaged
q   Check preload → Chapter „Stress-free alignment of exhaust system“
22 - Bolt
q   25 Nm

   
Installation position of front clamp
–  Install clamp so that ends of bolts do not protrude beyond bottom of clamp.
l  Bolt connection faces to left.
  A26-0159
Installation position of rear clamp
–  Fit clamp in horizontal position.
l  Bolt connection faces to left.
  A26-0218
Components of exhaust pipe mountings (vehicles with manual gearbox)
1 - Buffer
2 - Spacer
3 - Washer
4 - Bracket (right-side)
5 - Washer
6 - Bolt, 25 Nm
7 - Spacer sleeve
8 - Bracket (left-side)
9 - Compression spring
10 - Bolt, 25 Nm
11 - Nut, self-locking, 25 Nm
  A26-0033
Components of exhaust pipe mountings (vehicles with automatic gearbox)
1 - Washer
2 - Buffer
3 - Bracket
4 - Spacer sleeve
5 - Bolt, 25 Nm
6 - Bolt
7 - Washer
8 - Compression spring
9 - Spacer sleeve
10 - Nut, self-locking, 25 Nm
  A26-0187

Separating centre and rear silencers > < Exhaust system on vehicles with front-wheel drive