audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Checking exhaust system for leaks > < Removing and installing catalytic converter and exhaust pipe
4-Cyl. TDI®Engine, Mechanics
Removing and installing exhaust system components
Stress-free alignment of exhaust system
 
A26-0098

Front-wheel drive vehicles:

  • ● Exhaust system must be aligned when cold.
  • ‒ Slacken bolted joints on front clamp -26-3.
  • ‒ → Push exhaust system forwards -arrow- until pre-tension on rear mounting of rear silencer a = 7 ... 9 mm.
  • ‒ Tighten bolts on front clamp -Item 26-3 evenly to 40 Nm.

 
A26-0212

Tailpipe alignment

  • ‒ → Align tailpipes such that gap -a- on left is equal to gap -a- on right.
  • ‒ At the same time, gap -b- between bumper cutout and bottom edge of tailpipes must be established.
    • ‒ Dimension b = 97 ... 103 mm
 
A26-0104

Four-wheel drive vehicles:

  • ● Vehicles without clamp between front and rear silencers-
  • ‒ Unfasten bolted joints of clamp -Item 26-9.
  • ‒ → Push exhaust system forwards -arrow- until pre-tension on rear right retaining strap on rear silencer a = 9 ... 11 mm.
  • ‒ Tighten bolted joints of clamp evenly to 40 Nm.

 
A26-0212

Tailpipe alignment

  • ‒ → Align tailpipes such that gap -a- on left is equal to gap -a- on right.
  • ‒ At the same time, gap -b- between bumper cutout and bottom edge of tailpipes must be established.
    • ‒ Dimension b = 97 ... 103 mm
 
A26-0101
  • ● Vehicles with clamp between front and rear silencers

Note:

On vehicles with a clamp between the front and rear silencers only, the front silencer must be additionally set up.

  • ‒ Slacken off bolted joints of clamps -Item 26-10.
  • ‒ → Push exhaust system forwards -arrow- until pre-tension on rear left retaining strap on front silencer a = 7 ... 9 mm.
  • ‒ Tighten bolts on front clamp -Item 26-9 evenly to 40 Nm.

 
A26-0104
  • ‒ → Push rear silencer forwards -arrow- until pre-tension on rear right retaining strap on rear silencer a = 7 ... 11 mm.
  • ‒ Tighten bolts on rear clamp -Item 26-10 evenly to 40 Nm.
 
A26-0212

Tailpipe alignment

  • ‒ → Align tailpipes such that gap -a- on left is equal to gap -a- on right.
  • ‒ At the same time, gap -b- between bumper cutout and bottom edge of tailpipes must be established.
    • ‒ Dimension b = 97 ... 103 mm

Checking exhaust system for leaks > < Removing and installing catalytic converter and exhaust pipe