A4 Cabriolet Mk2
| Exhaust system (front section) - exploded view of components |
| 1 - | Lambda probe -G39- |
| q | Before catalytic converter |
| 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 |
| 2 - | Connecting pipe for exhaust gas recirculation |
| 3 - | Clip |
| q | Tighten to 1.3 Nm |
| 4 - | Lambda probe after catalytic converter -G130- |
| 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 |
| 5 - | Gasket |
| q | Renew |
| 6 - | 25 Nm |
| 7 - | Front exhaust pipe |
| q | With flexible joint |
| q | Do not bend flexible joint more than 10° – otherwise it can be damaged |
| q | Removing and installing → Chapter |
| q | Align exhaust system so it is free of stress → Chapter |
| 8 - | Exhaust gas temperature sender 1 -G235- |
| q | Tighten to 45 Nm |
| 9 - | Gasket |
| q | Renew |
| 10 - | 27 Nm |
| 11 - | Main catalytic converter |
| q | Protect against knocks and impact |
| q | Removing and installing → Chapter |
| 12 - | NOx sender -G295- |
| q | Tighten to 52 Nm |
| 13 - | Clamp (front) |
| q | Before tightening, align exhaust system so it is free of stress → Chapter |
| q | Installation position → Fig. |
| q | Tighten bolt connections evenly |
| 14 - | To centre silencer |
| 15 - | M8 = 23 Nm; M10 = 40 Nm |
| 16 - | 25 Nm |
| 17 - | Washer |
| 18 - | Buffer |
| 19 - | Spacer sleeve |
| 20 - | 25 Nm |
| 21 - | Washer |
| 22 - | Compression spring |
| 23 - | Bracket |
| q | For vehicles with manual gearbox |
| q | Components of exhaust pipe mountings for vehicles with multitronic gearbox → Fig. |
| 24 - | Spacer sleeve |
| 25 - | 25 Nm |
| 26 - | Starter catalytic converter |
| q | Protect against knocks and impact |
| q | Removing and installing → Chapter |
| 27 - | 40 Nm |
| q | Renew |
| 28 - | Gasket |
| q | Renew |
| 29 - | Exhaust manifold |
| q | Removing and installing → Chapter |
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