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Disconnecting centre silencer and rear silencer - vehicles with four-wheel drive > < Disconnecting centre silencer and rear silencer - vehicles with front-wheel drive

A4 Mk2

Exhaust system on vehicles with four-wheel drive - exploded view
   
Exhaust system on vehicles with four-wheel drive - exploded view
1 - 23 Nm
2 - Mounting
q   Renew if damaged
q   Note direction of arrow (direction of travel) when installing
q   Check preload → Chapter „Stress-free alignment of exhaust system“
3 - 25 Nm
q   Renew
4 - Turbocharger
5 - Gasket
q   Renew
6 - Catalytic converter
q   With flexible joint
q   Do not bend flexible joint more than 10° – otherwise it can be damaged
q   Protect against knocks and impact
q   Removing and installing → Chapter
7 - 25 Nm
q   Renew
8 - Gasket
q   Renew
9 - Bolt
10 - Front exhaust pipe
q   Removing and installing → Chapter
11 - Clamp (front)
q   Before tightening, align exhaust system so it is free of stress → Chapter
q   Installation position of bolts → Fig.
q   Tighten bolt connections evenly
12 - M8 = 23 Nm; M10 = 40 Nm
13 - Rear silencer
q   For left side of vehicle
q   Combined in one unit with centre silencer as original equipment. Can be renewed individually for repair purposes
q   Cutting point → Anchor
q   Renewing tailpipe → Fig.
q   Align exhaust system so it is free of stress → Chapter
14 - Mountings
q   Renew if damaged
q   Check preload → Chapter „Stress-free alignment of exhaust system“
15 - 23 Nm
16 - Rear silencer
q   For right side of vehicle
q   Combined in one unit with centre silencer as original equipment. Can be renewed individually for repair purposes
q   Cutting point → Anchor
q   Renewing tailpipe → Fig.
q   Align exhaust system so it is free of stress → Chapter
17 - 23 Nm
18 - M8 = 23 Nm; M10 = 40 Nm
19 - Clamps (rear)
q   For separate replacement of centre and rear silencers
q   Before tightening, align exhaust system so it is free of stress → Chapter
q   Installation position of bolts → Fig.
q   Tighten bolt connections evenly
20 - Centre silencer
q   Combined in one unit with rear silencers 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

   
Installation position of front clamp
–  Fit 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 clamps
–  Fit clamps so that ends of bolts do not protrude beyond bottom of clamp.
l  Bolt connections face outwards.
  A26-0097
Renewing tailpipe
–  Cut through old tailpipe -1- at a right angle at cutting point -C-.
  Note
The illustration shows the tailpipe for a vehicle with petrol engine.
–  Push new tailpipe -3- onto tailpipe as far as marking -A-. Slot on tailpipe should align with marking -B-.
–  Tighten clamp connection -2- to 25 Nm.
  A26-0475

Disconnecting centre silencer and rear silencer - vehicles with four-wheel drive > < Disconnecting centre silencer and rear silencer - vehicles with front-wheel drive