A4 Mk1
| Exhaust system - exploded view of components |
| 1 - | Front exhaust pipe with starter catalytic converter and main catalytic converter |
| q | For right side of vehicle |
| 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 → Fig. |
| q | Align exhaust system so it is free of stress → Chapter |
| 2 - | 30 Nm |
| q | Renew |
| 3 - | Lambda probe -G39- (before catalytic converter) |
| q | For right side of vehicle |
| 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 → Parts catalogue for high-temperature paste. |
| q | The assembly paste/high-temperature paste must not get into the slots on the probe body. |
| q | Tighten to 55 Nm |
| 4 - | Lambda probe after catalytic converter -G130- |
| q | For right side of vehicle |
| 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 → Parts catalogue for high-temperature paste. |
| q | The assembly paste/high-temperature paste must not get into the slots on the probe body. |
| q | Tighten to 55 Nm |
| 5 - | Front exhaust pipe with starter catalytic converter and main catalytic converter |
| q | For left side of vehicle |
| 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 → Fig. |
| q | Align exhaust system so it is free of stress → Chapter |
| 6 - | Lambda probe 2 -G108- (before catalytic converter) |
| q | For left side of vehicle |
| 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 → Parts catalogue for high-temperature paste. |
| q | The assembly paste/high-temperature paste must not get into the slots on the probe body. |
| q | Tighten to 55 Nm |
| 7 - | 30 Nm |
| q | Renew |
| 8 - | Lambda probe 2 after catalytic converter -G131- |
| q | For left side of vehicle |
| 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 → Parts catalogue for high-temperature paste. |
| q | The assembly paste/high-temperature paste must not get into the slots on the probe body. |
| q | Tighten to 55 Nm |
| 9 - | Mounting |
| q | Renew if damaged |
| 10 - | 25 Nm |
| 11 - | Mounting |
| q | Renew if damaged |
| 12 - | 25 Nm |
| 13 - | Rear silencer |
| q | Align exhaust system so it is free of stress → Chapter |
| 14 - | 25 Nm |
| 15 - | Mounting |
| q | Renew if damaged |
| 16 - | Centre silencer |
| q | Align exhaust system so it is free of stress → Chapter |
| 17 - | Mounting |
| q | Renew if damaged |
| 18 - | 25 Nm |
| 19 - | Clamps |
| q | Before tightening, align exhaust system so it is free of stress → Chapter |
| q | Installation position → Fig. |
| q | Tighten screw connections evenly to 40 Nm |
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