All Wheel Drive - Component Overview

Exhaust System Components, Removing And Installing


NOTE:
- Always replace gaskets and self-locking nuts.
- After exhaust system repairs, make sure exhaust system is not under stress and has sufficient clearance from the body. If necessary, loosen clamps and align mufflers and exhaust pipes so that there is adequate distance to vehicle body, and weight is evenly distributed among the exhaust mounts.
- Decoupling element in front exhaust pipe must not be bent more than 10 degrees, otherwise it may be damaged.

Exhaust System For Vehicles With All Wheel Drive (AWD) - Component Overview







1 - Turbocharger
2 - Seal
3 - 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 hot bolt paste; the paste must not get into slots of oxygen sensor body. Hot bolt paste.
- Tighten to 55 Nm
4 - 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 hot bolt paste; the paste must not get into slots of oxygen sensor body. Hot bolt paste.
- Tighten to 55 Nm
5 - Catalytic converter
- Protect from hit- and impact stress
- Install exhaust system free of stress
6 - Seal
7 - 25 Nm
8 - Front exhaust pipe
- with decoupling element
- Decoupling element must not be kinked more than 10 degrees, otherwise it may be damaged
9 - Front clamping sleeve
- Before tightening, align exhaust system is tension-free
- Installation position, see Fig. 1
- Tighten bolts evenly
10 - 40 Nm
11 - Spacer sleeve
12 - Buffer
13 - Strap
14 - Washer
15 - 30 Nm
16 - 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
17 - Suspended mount
- Replace if damaged
18 - 25 Nm
19 - 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
20 - 40 Nm
21 - Rear clamping sleeve
- 2x
- Used when center or rear muffler is replaced separately.
- Before tightening, align exhaust system is tension-free
- Installed position, see Fig. 2
- Tighten bolts evenly
22 - Center muffler
- Factory-installed with rear muffler as one unit. If repair is necessary, replace separately
- Install exhaust system free of stress
23 - 25 Nm
24 - Suspended mount
- Replace if damaged
25 - Bolt
26 - Washer
27 - Compression spring
28 - Strap
29 - Spacer sleeve
30 - 25 Nm
31 - 40 Nm

Fig. 1 Installed position of front clamping sleeve







- When installing clamping sleeve, tighten bolt only as needed to align bolt ends with lower edge of clamping sleeve.
- Screw connections face each other


Fig. 2 Installed position of rear clamping sleeves







- Install double clamps so that the bolt ends do not project beyond lower edge of double clamp.
- Threaded connections point outward.