Overview 2
Exhaust System For Vehicles With All Wheel Drive (AWD), Assembly Overview
1 - 23 Nm
2 - Support ring
- Replace if damaged
3 - Center muffler
- Factory-installed with rear muffler as one unit. If repair is necessary, replace separately
- Install exhaust system free of stress
4 - 27 Nm
5 - Exhaust manifold
- For cylinder bank 1 (right)
6 - Gasket
7 - Heated Oxygen Sensor (HO2S) -G39- (before catalytic converter)
- Bank 1, sensor 1
- The threads of new oxygen sensors are coated with assembly paste; the paste must not get into slots of oxygen sensor body
- When re-using the old oxygen sensor, grease the threads with high-temperature lubricant; the lubricant must not get into slots of oxygen sensor body.
- Tighten to 55 Nm
8 - Heated Oxygen Sensor (HO2S) 2 -G108- (before catalytic converter)
- Bank 2, sensor 1
- The threads of new oxygen sensors are coated with assembly paste; the paste must not get into slots of oxygen sensor body
- When re-using the old oxygen sensor, grease the threads with high-temperature lubricant; the lubricant must not get into slots of oxygen sensor body.
- Tighten to 55 Nm
9 - Exhaust manifold
- Cylinder bank 2 (left)
10 - Gasket
11 - 27 Nm
12 - Oxygen Sensor (O2S) 2 Behind Three Way Catalytic Converter (TWC) -G131-
- Bank 2, sensor 2
- Check Oxygen Sensor (O2S) and oxygen sensor control behind Three Way Catalytic Converter (TWC)
- The threads of new oxygen sensors are coated with assembly paste; the paste must not get into slots of oxygen sensor body
- When re-using the old oxygen sensor, grease the threads with high-temperature lubricant; the lubricant must not get into slots of oxygen sensor body.
- Tighten to 55 Nm
13 - Front exhaust pipe with catalytic converter
- For cylinder bank 2 (left)
- With decoupling element
- Decoupling element must not be kinked more than 10 degrees, otherwise it may be damaged
- Protect from hit- and impact stress
- Install exhaust system free of stress
- Individual mounting components for vehicles with manual transmission
- Individual mounting components for vehicles with automatic transmission 01 V
14 - Front clamping sleeve
- Before tightening ensure exhaust system is tension-free
- Tighten bolts evenly
15 - 40 Nm
16 - Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) -G130- with Oxygen Sensor (O2S) Heater 1 -Z29-
- Bank 1, sensor 2
- The threads of new oxygen sensors are coated with assembly paste; the paste must not get into slots of oxygen sensor body
- When re-using the old oxygen sensor, grease the threads with high-temperature lubricant; the lubricant must not get into slots of oxygen sensor body.
- Tighten to 55 Nm
17 - Front exhaust pipe with catalytic converter
- For cylinder bank 1 (right)
- With decoupling element
- Decoupling element must not be kinked more than 10 degrees, otherwise it may be damaged
- Protect from hit- and impact stress
- Install exhaust system free of stress
- Individual mounting components for vehicles with manual transmission
- Individual mounting components for vehicles with automatic transmission 01 V
18 - Rear muffler
- For left side of vehicle
- Factory-installed with center muffler as one unit. If repair is necessary, replace separately
- Install exhaust system free of stress
19 - Support ring
- Replace if damaged
20 - 23 Nm
21 - Rear muffler
- For right side of vehicle
- Factory-installed with center muffler as one unit. If repair is necessary, replace separately
- Install exhaust system free of stress
22 - 23 Nm
23 - 40 Nm
24 - Rear clamping sleeve
- Used when center or rear muffler is replaced separately.
- Before tightening ensure exhaust system is tension-free
- Tighten bolts evenly
Fig. 1 Installed position of front clamping sleeves
- Install double clamps so that the bolt ends do not project over lower edge of double clamp.
- Threaded connections face each other
Fig. 2 Installed position of rear clamping sleeves
- Install double clamps so that the bolt ends do not project over lower edge of double clamp.
- Threaded connections point outward
Fig. 3 Individual left mounting components for vehicles with manual transmission
1 - Self-locking nut (25 Nm)
2 - Spacer sleeve
3 - Strap
4 - Buffer
5 - Spacer sleeve
6 - Bolt (25 Nm)
7 - Washer
8 - Compression spring
9 - Spacer sleeve
Fig. 4 Individual right mounting components for vehicles with manual transmission
1 - Spacer sleeve
2 - Strap
3 - Compression spring
4 - Washer
5 - Bolt (25 Nm)
6 - Spacer sleeve
7 - Buffer
8 - Spacer sleeve
9 - Self-locking nut (25 Nm)
Fig. 5 Individual left mounting components for vehicles with automatic transmission 01 V
1 - Bolt (25 Nm)
2 - Heat shield for selector lever cable
3 - Spacer sleeve
4 - Buffer
5 - Strap
6 - Spacer sleeve
7 - Pivot
8 - Self-locking nut (25 Nm)
9 - Compression spring
10 - Spacer sleeve
11 - Washer
Fig. 6 Individual right mounting components for vehicles with automatic transmission 01 V
1 - Washer
2 - Bolt (25 Nm)
3 - Spacer sleeve
4 - Buffer
5 - Strap
6 - Spacer sleeve
7 - Self-locking nut (25 Nm)
8 - Compression spring
9 - Spacer sleeve
Fig. 7 Individual left mounting components for vehicles with Multitronic transmission
1 - Bolt (25 Nm)
2 - Washer
3 - Compression spring
4 - Spacer sleeve
5 - Self-locking nut (25 Nm)
6 - Bolt (25 Nm)
7 - Spacer sleeve
8 - Buffer
9 - Strap
10 - Spacer sleeve
Fig. 8 Individual right mounting components for vehicles with Multitronic transmission
1 - Self-locking nut (25 Nm)
2 - Bolt (25 Nm)
3 - Spacer sleeve
4 - Buffer
5 - Strap
6 - Spacer sleeve
7 - Bolt (25 Nm)
8 - Washer
9 - Compression spring
10 - Spacer sleeve