A4 Cabriolet Mk2
| Exhaust system - exploded view |
| Front-wheel drive vehicles |
| 1 - | Y-pipe |
| q | Combined in one unit with rear silencers as original equipment. Can be renewed individually for repair purposes |
| q | Cutting point → Anchor |
| q | Stress-free alignment of exhaust system with cutting point → Chapter |
| 2 - | 23 Nm |
| 3 - | Mounting |
| q | Renew if damaged |
| q | Check preload → Chapter „Stress-free alignment of exhaust system“ |
| 4 - | 23 Nm |
| q | Renew |
| 5 - | 25 Nm |
| q | Renew |
| 6 - | Gasket |
| q | Renew |
| 7 - | Starter catalytic converter |
| q | Protect against knocks and impact |
| q | Removing and installing → Chapter |
| q | Stress-free alignment of exhaust system with cutting point → Chapter |
| 8 - | 27 Nm |
| q | Renew |
| q | Coat with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue |
| 9 - | Lambda probe -G39- |
| q | The threads on the new Lambda probes are coated with a special assembly paste. |
| q | If re-installing old Lambda probe, coat thread with high-temperature paste: Refer to → Electronic parts catalogue for high-temperature paste |
| q | The assembly paste/high-temperature paste must not get into the slots on the probe body. |
| q | Removing and installing → Rep. gr.23 |
| 10 - | Exhaust gas temperature sender 2 for cylinder bank 1 -G448- |
| q | Removing and installing → Chapter |
| q | Coat thread with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue |
| q | Installation position: align temperature sender connection centrally between propshaft and body |
| 11 - | Front exhaust pipe |
| q | With flexible joint; do not bend flexible joint more than 10° – otherwise it can be damaged |
| q | Protect against knocks and impact |
| q | Removing and installing → Chapter |
| q | Mounting components: |
| t | Vehicles with manual gearbox → Fig. |
| t | Vehicles with multitronic gearbox → Fig. |
| q | Stress-free alignment of exhaust system with cutting point → Chapter |
| 12 - | Gasket |
| q | Renew |
| 13 - | Diesel particulate filter with catalytic converter |
| q | Removing and installing → Chapter |
| q | After renewing particulate filter, perform adaption in „Guided Functions“ → Vehicle diagnostic tester |
| 14 - | Temperature sender before particulate filter -G506- |
| q | Removing and installing → Chapter |
| q | Coat thread with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue |
| 15 - | Clamp (front) |
| q | Installation position → Fig. |
| q | Before tightening, align exhaust system so it is free of stress → Chapter |
| q | Tighten bolt connections evenly |
| 16 - | M8: 23 Nm; M10: 40 Nm |
| 17 - | Pressure pipes |
| q | Installation sequence: |
| – | Fit front pressure pipe in particulate filter, clip into side bracket and tighten to 25 Nm |
| – | Fit rear pressure pipe in particulate filter, align parallel with front pressure pipe and tighten to 25 Nm |
| 18 - | Rear silencer with tailpipe |
| q | For left side of vehicle |
| q | Y-pipe, rear silencer and tailpipe can be renewed separately as required |
| q | Cutting point: Y-pipe / rear silencer → Anchor |
| q | Cutting point: rear silencer / tailpipe → Chapter |
| q | Stress-free alignment of exhaust system with cutting point → Chapter |
| 19 - | 25 Nm |
| q | Renew |
| 20 - | Mounting |
| q | Renew if damaged |
| q | Check preload → Chapter „Stress-free alignment of exhaust system“ |
| 21 - | 23 Nm |
| 22 - | Rear silencer with tailpipe |
| q | For right side of vehicle |
| q | Y-pipe, rear silencer and tailpipe can be renewed separately as required |
| q | Cutting point: Y-pipe / rear silencer → Anchor |
| q | Cutting point: rear silencer / tailpipe → Chapter |
| q | Align exhaust system so it is free of stress → Chapter |
| 23 - | Retainer |
| 24 - | Clamp (rear) |
| q | For separate replacement of Y-pipe and rear silencers |
| q | Before tightening, align exhaust system so it is free of stress → Chapter |
| q | Installation position → Fig. |
| q | Tighten bolt connections evenly |
| 25 - | M8: 23 Nm; M10: 40 Nm |
| 26 - | 23 Nm |
| 27 - | Mounting |
| q | Renew if damaged |
| q | Check preload → Chapter „Stress-free alignment of exhaust system“ |
| Four-wheel drive vehicles |
| 1 - | 23 Nm |
| q | Renew |
| 2 - | 23 Nm |
| 3 - | Mounting |
| q | Renew if damaged |
| q | Check preload → Chapter „Stress-free alignment of exhaust system“ |
| 4 - | Y-pipe |
| q | Combined in one unit with rear silencers as original equipment. Can be renewed individually for repair purposes |
| q | Cutting point → Anchor |
| q | Stress-free alignment of exhaust system with cutting point → Chapter |
| 5 - | 25 Nm |
| q | Renew |
| 6 - | Gasket |
| q | Renew |
| 7 - | Starter catalytic converter |
| q | Protect against knocks and impact |
| q | Removing and installing → Chapter |
| q | Stress-free alignment of exhaust system with cutting point → Chapter |
| 8 - | 27 Nm |
| q | Renew |
| q | Coat with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue |
| 9 - | Lambda probe -G39- |
| q | The threads on the new Lambda probes are coated with a special assembly paste. |
| q | If re-installing old Lambda probe, coat thread with high-temperature paste: Refer to → Electronic parts catalogue for high-temperature paste |
| q | The assembly paste/high-temperature paste must not get into the slots on the probe body. |
| q | Removing and installing → Rep. gr.23 |
| 10 - | Exhaust gas temperature sender 2 for cylinder bank 1 -G448- |
| q | Removing and installing → Chapter |
| q | Coat thread with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue |
| q | Installation position: align temperature sender connection centrally between propshaft and body |
| 11 - | Front exhaust pipe |
| q | With flexible joint; do not bend flexible joint more than 10° – otherwise it can be damaged |
| q | Protect against knocks and impact |
| q | Removing and installing → Chapter |
| q | Components of exhaust pipe mountings: Vehicles with manual gearbox → Fig., vehicles with automatic gearbox → Fig. |
| q | Stress-free alignment of exhaust system with cutting point → Chapter |
| 12 - | Gasket |
| q | Renew |
| 13 - | Temperature sender before particulate filter -G506- |
| q | Removing and installing → Chapter |
| q | Coat thread with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue |
| 14 - | Diesel particulate filter with catalytic converter |
| q | Removing and installing → Chapter |
| q | After renewing particulate filter, perform adaption in „Guided Functions“ → Vehicle diagnostic tester |
| 15 - | Bolt |
| 16 - | Gasket |
| q | Renew |
| 17 - | Pressure pipes |
| q | Installation sequence: |
| – | Fit front pressure pipe in particulate filter, clip into side bracket and tighten to 25 Nm |
| – | Fit rear pressure pipe in particulate filter, align parallel with front pressure pipe and tighten to 25 Nm |
| 18 - | 23 Nm |
| q | Renew |
| 19 - | Rear silencer with tailpipe |
| q | For left side of vehicle |
| q | Y-pipe, rear silencer and tailpipe can be renewed separately as required |
| q | Cutting point: Y-pipe / rear silencer → Anchor |
| q | Cutting point: rear silencer / tailpipe → Chapter |
| q | Stress-free alignment of exhaust system with cutting point → Chapter |
| 20 - | 25 Nm |
| q | Renew |
| 21 - | Mounting |
| q | Renew if damaged |
| q | Check preload → Chapter „Stress-free alignment of exhaust system“ |
| 22 - | 23 Nm |
| 23 - | Rear silencer with tailpipe |
| q | For right side of vehicle |
| q | Y-pipe, rear silencer and tailpipe can be renewed separately as required |
| q | Cutting point: Y-pipe / rear silencer → Anchor |
| q | Cutting point: rear silencer / tailpipe → Chapter |
| q | Align exhaust system so it is free of stress → Chapter |
| 24 - | Retainer |
| 25 - | M8: 23 Nm; M10: 40 Nm |
| 26 - | Clamp (rear) |
| q | For separate replacement of Y-pipe and rear silencers |
| q | Before tightening, align exhaust system so it is free of stress → Chapter |
| q | Installation position → Fig. |
| q | Tighten bolt connections evenly |
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