A4 Mk2
| Exhaust system on vehicles with four-wheel drive - exploded view |
| 1 - | 23 Nm |
| 2 - | Mounting |
| q | Renew if damaged |
| 3 - | Centre silencer |
| q | Combined in one unit with rear silencer as original equipment. Can be renewed individually for repair purposes |
| q | Cutting point → Anchor |
| q | Align exhaust system so it is free of stress → Chapter |
| 4 - | 27 Nm |
| q | Renew |
| 5 - | Exhaust manifold |
| q | For cylinder bank 1 (right-side) |
| q | Removing and installing → Chapter |
| 6 - | Gasket |
| q | Renew |
| 7 - | Lambda probe -G39- |
| q | For cylinder bank 1 (right-side) |
| q | Threads of new Lambda probes are already greased with assembly paste; the paste must not get into the slots on the probe body |
| q | When re-using the old Lambda probe, grease thread with high-temperature lubricant; the paste must not get into the slots of the probe body; High-temperature lubricant → Parts catalogue |
| q | Removing and installing → Rep. Gr.24 |
| q | Tighten to 55 Nm |
| 8 - | Lambda probe 2 -G108- |
| q | For cylinder bank 2 (left-side) |
| q | Threads of new Lambda probes are already greased with assembly paste; the paste must not get into the slots on the probe body |
| q | When re-using the old Lambda probe, grease thread with high-temperature lubricant; the paste must not get into the slots of the probe body; High-temperature lubricant → Parts catalogue |
| q | Removing and installing → Rep. Gr.24 |
| q | Tighten to 55 Nm |
| 9 - | Exhaust manifold |
| q | Cylinder bank 2 (left-side) |
| q | Removing and installing → Chapter |
| 10 - | Gasket |
| q | Renew |
| 11 - | 27 Nm |
| q | Renew |
| 12 - | Lambda probe 2 after catalytic converter -G131- |
| q | For cylinder bank 2 (left-side) |
| q | Threads of new Lambda probes are already greased with assembly paste; the paste must not get into the slots on the probe body |
| q | When re-using the old Lambda probe, grease thread with high-temperature lubricant; the paste must not get into the slots of the probe body; High-temperature lubricant → Parts catalogue |
| q | Removing and installing → Rep. Gr.24 |
| q | Tighten to 55 Nm |
| 13 - | Front exhaust pipe with catalytic converter |
| q | For cylinder bank 2 (left-side) |
| q | With flexible joint; do not bend flexible joint more than 10° – otherwise it can be damaged |
| q | Protect against knocks and impact |
| q | Align exhaust system so it is free of stress → Chapter |
| q | Components of exhaust pipe mountings: vehicles with manual gearbox → Fig., vehicles with automatic gearbox 01V → Fig. |
| q | Removing and installing: vehicles with manual gearbox → Chapter; vehicles with automatic gearbox 01V → Chapter |
| 14 - | Clamp (front) |
| q | Before tightening, align exhaust system so it is free of stress → Chapter |
| q | Installation position → Fig. |
| q | Tighten bolt connections evenly |
| 15 - | 40 Nm |
| 16 - | Lambda probe after catalytic converter -G130- |
| q | For cylinder bank 1 (right-side) |
| q | Threads of new Lambda probes are already greased with assembly paste; the paste must not get into the slots on the probe body |
| q | When re-using the old Lambda probe, grease thread with high-temperature lubricant; the paste must not get into the slots of the probe body; High-temperature lubricant → Parts catalogue |
| q | Removing and installing → Rep. Gr.24 |
| q | Tighten to 55 Nm |
| 17 - | Front exhaust pipe with catalytic converter |
| q | For cylinder bank 1 (right-side) |
| q | With flexible joint; do not bend flexible joint more than 10° – otherwise it can be damaged |
| q | Protect against knocks and impact |
| q | Align exhaust system so it is free of stress → Chapter |
| q | Components of exhaust pipe mountings: vehicles with manual gearbox → Fig., vehicles with automatic gearbox 01V → Fig. |
| q | Removing and installing: vehicles with manual gearbox → Chapter; vehicles with automatic gearbox 01V → Chapter |
| 18 - | Rear silencer |
| q | For left side of vehicle |
| q | Combined in one unit with centre silencer as original equipment. Can be renewed individually for repair purposes |
| q | Cutting point → Anchor |
| q | Renewing tailpipe → Chapter |
| q | Align exhaust system so it is free of stress → Chapter |
| 19 - | Mounting |
| q | Renew if damaged |
| 20 - | 23 Nm |
| 21 - | Rear silencer |
| q | For right side of vehicle |
| q | Combined in one unit with centre silencer as original equipment. Can be renewed individually for repair purposes |
| q | Cutting point → Anchor |
| q | Renewing tailpipe → Chapter |
| q | Align exhaust system so it is free of stress → Chapter |
| 22 - | 23 Nm |
| 23 - | 40 Nm |
| 24 - | Clamp (rear) |
| q | For separate replacement of centre 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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