A4 Mk3
Silencers - exploded view |
1 - | Gasket |
q | Renew |
2 - | Lambda probe -G39- and Lambda probe heater -Z19- |
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.24 |
3 - | Lambda probe after catalytic converter -G130- and Lambda probe heater 1 after catalytic converter -Z29- |
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.24 |
4 - | Catalytic converter |
q | Protect catalytic converter from damage by knocks and impact |
q | Removing and installing → Chapter |
q | Align exhaust system so it is free of stress → Chapter |
5 - | Front silencer |
Caution
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q | Removing and installing → Chapter |
q | Align exhaust system so it is free of stress → Chapter |
6 - | Clamp (front) |
q | Before tightening, align exhaust system so it is free of stress → Chapter |
q | Installation position → Fig. |
q | Tighten bolt connections evenly. |
7 - | Nut |
q | 23 Nm |
8 - | Centre silencer |
q | Combined in one unit with rear silencers as original equipment. Can be renewed individually for repair purposes |
q | Remove diagonal struts prior to removal → Fig. |
q | Cutting point → Chapter |
q | Align exhaust system so it is free of stress → Chapter |
9 - | Clamp (rear left) |
q | For separate replacement of centre and rear silencers |
q | Installation position → Fig. |
q | Before tightening, align exhaust system so it is free of stress → Chapter |
q | Tighten bolt connections evenly |
10 - | Rear silencer (left-side) |
q | Combined as one unit with centre silencer and tailpipe as original equipment |
q | Remove diagonal struts prior to removal → Fig. |
q | Centre silencer, rear silencer and tailpipe can be renewed separately as required |
q | Cutting point: centre silencer / rear silencer → Chapter |
q | Cutting point between rear silencer and tailpipe → Chapter |
q | Align exhaust system so it is free of stress → Chapter |
11 - | Tailpipe |
q | Combined in one unit with rear silencer as original equipment. Can be renewed individually for repair purposes |
q | Cutting point → Chapter |
q | Aligning → Chapter |
12 - | Clamp |
q | 23 Nm |
13 - | Mounting |
q | Renew if damaged |
q | Check preload → Chapter |
14 - | Nut |
q | Renew |
q | 20 Nm |
15 - | Nut |
q | 23 Nm |
16 - | Rear silencer (right-side) |
q | Combined as one unit with centre silencer and tailpipe as original equipment |
q | Remove diagonal struts prior to removal → Fig. |
q | Centre silencer, rear silencer and tailpipe can be renewed separately as required |
q | Cutting point: centre silencer / rear silencer → Chapter |
q | Cutting point between rear silencer and tailpipe → Chapter |
q | Align exhaust system so it is free of stress → Chapter |
17 - | Clamp (rear right) |
q | For separate replacement of centre and rear silencers |
q | Installation position → Fig. |
q | Before tightening, align exhaust system so it is free of stress → Chapter |
q | Tighten bolt connections evenly |
18 - | Bolt |
q | Renew |
q | 20 Nm |
19 - | Mounting |
q | Renew if damaged |
q | Check preload → Chapter „Stress-free alignment of exhaust system“ |
20 - | Gasket |
q | Renew |
21 - | Nut |
q | 25 Nm |
22 - | Nut |
q | 40 Nm |
q | Renew |
q | Coat studs of turbocharger with high-temperature paste |
q | High-temperature paste → Electronic parts catalogue |
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