A4 Mk2
Exhaust system on vehicles with front-wheel drive - exploded view |
1 - | 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 |
2 - | 23 Nm |
3 - | Mounting |
q | Renew if damaged |
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 | For 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 multitronic gearbox 01J → Fig. |
q | Removing and installing: vehicles with manual gearbox → Chapter; vehicles with multitronic gearbox 01J → 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 multitronic gearbox 01J → Fig. |
q | Removing and installing: vehicles with manual gearbox → Chapter; vehicles with multitronic gearbox 01J → 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 - | 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 |
24 - | 40 Nm |
25 - | Mounting |
q | Renew if damaged |
26 - | 23 Nm |