Audi Workshop Service and Repair Manuals

• Seal
• ◆ Renew
• Exhaust manifold
• ◆ Removing and installing
  
• Lambda probe, 50 Nm
• ◆ Grease only the threads with high-temperature lubricantG 052 112 A3.The lubricant mustnot get into the slots on the probe body.
• ◆ Checking:

=> Motronic injection and ignition system (4-cylinder); Repair Group 24: Testing lambda control

=> Motronic injection and ignition system (4-cylinder)07.96 ä; Repair group 24; Testing lambda control

• ◆ Unplugging lambda probe connector => Page 26-17

• 25 Nm
• Mounting
• 40 Nm
• Clamp
• ◆ Align exhaust system so it is free of stress before tightening clamp => Page 26-20.
• ◆ Installation position:
  bolted connection facing to the left.
• ◆ Position of bolts => Fig.1
• ◆ Tighten bolted connections evenly.
• Front silencer
• ◆ Front and rear silencers are one unit as original equipment, but can be renewed separately for repair purposes
• ◆ Cutting point => Page 26-15
• ◆ Aligning exhaust system free of stress => Page 26-20

• Clamp
• ◆ For separate replacement of front and rear silencers
• ◆ Align exhaust system so it is free of stress before tightening clamp => Page 26-20.
• ◆ Installation position:
  bolted connection facing to the left.
• ◆ Position of bolts => Fig.1
• ◆ Tighten bolted connections evenly.
• 25 Nm
• Mounting
• Rear silencer
• ◆ Rear silencer and front silencer are one unit as original equipment, but can be renewed separately for repair purposes.
• ◆ Cutting point => Page 26-15
• ◆ Aligning exhaust system free of stress => Page 26-20

• Mounting
• 25 Nm
• 25 Nm
• Mounting
• 40 Nm
• Catalytic converter
• ◆ Protect from damage by knocks and impact
• 25 Nm
• ◆ Renew
• Gasket
• ◆ Renew
• 25 Nm

• Front exhaust pipe
• ◆ With flexible connection (de-coupling element)
• ◆ Do not bend flexible connection more than10°- otherwise it can be damaged
• ◆ Exhaust mountings on vehicles with rough-road suspension=>Fig.2
• ◆ To remove, unbolt floor cross member (20 Nm)
• ◆ Aligning exhaust system free of stress => Page 26-20
• 30 Nm
• ◆ Renew

→ Fig.1    Installation position of clamp

• ‒ Install the clamps so that the ends of the bolts -arrow- are not below the bottom circumference of the clamps.

→ Fig.2    Components of exhaust pipe mountings

(vehicles with rough-road suspension)

•     1 -    Nut, self-locking - 25 Nm
•     2 -    Bolt - 25 Nm
•     3 -    Cross-piece
•     4 -    Front exhaust pipe with flexible connection
•     5 -    Bolt - 25 Nm
•     6 -    Mounting