Front Wheel Drive Vehicles

Front wheel drive vehicles
1. Turbocharger
^ Refer to Powertrain Management
2. Gasket
^ Always replace
3. Oxygen sensor 1 upstream of catalytic
^ converter-G39-, 50 Nm
^ Black connector
^ Grease thread only with hot bolt paste G 052 1 12 A3; paste must not be allowed to come into contact with slits in probe body
^ Checking:
4. Oxygen sensor 2 downstream of catalytic converter -G130-, 50 Nm
^ Brown connector
^ Grease thread only with hot bolt paste G 052 1 12 A3; paste must not be allowed to come into contact with slits in probe body
^ Checking:
5. Catalytic converter
^ Protect from damage by knocks and impact
^ Removing and installing, Refer to Powertrain Management
6. Gasket
^ Replace
7. 25 Nm
8. Front exhaust pipe
^ With decoupling element
^ To avoid damage, do not bend decoupling element by more than 10°
9. Front clamp
^ Align exhaust system so it is free of stress before tightening clamp
^ Installation position of bolt ends, Refer to Fig 1
^ Tighten bolted connections evenly
10. 40 Nm
11. Spacer sleeve
12. Buffer
13. Lug
14. Washer
15. M10 bolt
^ 30 Nm
16. Mounting
17. 25 Nm
18. Rear muffler (left)
^ Tailpipe can be replaced
^ Rear muffler and center muffler are one unit as original equipment, but can be replaced separately for repair purposes.
^ Cutting point, Refer to Muffler, Service and Repair
^ Stress-free alignment of exhaust system
^ Replacing tailpipe, Refer to Fig 3
19. Rear muffler (right)
^ Tailpipe can be replaced
^ Rear muffler and center muffler are one unit as original equipment, but can be replaced separately for repair purposes.
^ Cutting point, Refer to muffler, Service and Repair
^ Stress-free alignment of exhaust system
^ Replacing tailpipe, Refer to Muffler, Service and Repair
20. Rear clamps
^ For separate replacement of center muffler and both rear mufflers
^ Align exhaust system so it is free of stress before tightening clamp
^ Installation position, Refer to Exhaust System Components, Removing and Installing - Overview
^ Tighten bolted connections evenly
21. 40 Nm
22. Center muffler
^ Center muffler and both rear mufflers are one unit as original equipment, but can be replaced separately for repair purposes.
^ Cutting point, Refer to Exhaust System Components, Removing and Installing - Overview
^ Stress-free alignment of exhaust system
23. 25 Nm
24. Mounting
25. 25 Nm
26. Mounting
27. Me bolt
28. Washer
29. Spring
30. Lug
31. Spacer sleeve
32. 25 Nm
33. 40 Nm





Fig. 1 Installation position of front clamp
^ Install clamp so that ends of bolts are not below bottom circumference of clamp.
^ Bolted connection on left





Fig. 2 Installation position of rear clamps
^ Install clamps so that ends of bolts are not below bottom circumference of clamps.
^ Bolted connections on outside
^ Align exhaust system stress-free
^ Tighten bolted connections evenly to 40 Nm.





Fig. 3 Replacing tailpipe
^ Cut through tailpipe -1- squarely at cutting point -C- using body saw, e.g. VAG 1523A.
^ Push on tailpipe -3- up to marking -A-. When doing so, make sure that slot in tailpipe is in line with marking -B-.
^ Tighten bolted connection on clamp -2- to 25 Nm.