Exhaust System Assembly Overview
Exhaust System Assembly Overview
1 Turbocharger
2 Gasket
• Replace
3 Heated Oxygen Sensor (HO2S) (G39) and Oxygen Sensor (O2S) Heater (Z19) (black connector)
• Torque specification, 55 Nm
• Only use hot bolt paste to grease thread; do not let paste get onto slits of oxygen sensor body
• Hot bolt paste
• Removing and installing, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction
4 Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) and Oxygen Sensor (O2S) Heater 1 (behind Three Way Catalytic Converter (TWC)) (Z29) (brown connector)
• Torque specification, 55 Nm
• Only use hot bolt paste to grease thread; do not let paste get onto slits of oxygen sensor body
• Hot bolt paste
• Removing and installing, refer to => Fuel Delivery and Air Induction Fuel Delivery and Air Induction
5 Catalytic converter
• Protect from hit and impact stress
• Removing and installing, refer to => [ Catalytic Converter ] Service and Repair
6 25 Nm
• Replace
7 Gasket
• Replace
8 Bolt
9 Front exhaust pipe
• With flex joint
• Decoupling element must not be bent more than 10° - otherwise it may be damaged
• Removing and installing, refer to => [ Front Exhaust Pipe ] Service and Repair
10 Front clamping sleeve
• Installed location: Threaded connection faces toward left
• Installation position of bolt ends, refer to => [ Installed position of front clamping sleeve ]
• Before tightening, align exhaust system tension-free, refer to => [ Exhaust System, Installing ] Exhaust System, Installing
• Tighten threaded connections evenly.
11 23 Nm
• Replace
12 Spacer sleeve
13 Buffer
14 Tab
15 Spacer sleeve
16 Bolt
17 Rear muffler
• For left side of vehicle
• Original equipment as one unit with center muffler. For repairs, replace each separately.
• Separating point => [ Separate exhaust pipes at separating point using at a right angle. ] Service and Repair
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Exhaust System, Installing
18 Suspended mountings
• Replace if damaged
• Check pretension, refer to => [ Exhaust System, Installing ] Exhaust System, Installing
19 23 Nm
20 Rear muffler
• For right side of vehicle
• Original equipment as one unit with center muffler. For repairs, replace each separately.
• Separating point => [ Separate exhaust pipes at separating point using at a right angle. ] Service and Repair
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Exhaust System, Installing
21 23 Nm
22 23 Nm
23 Rear clamping sleeves
• For individual replacement of center and rear mufflers
• Before tightening, align exhaust system tension-free, refer to => [ Exhaust System, Installing ] Exhaust System, Installing
• Installed location: Threaded connections face outward
• Installation position of bolt ends => [ Installed position of rear double clamps ]
• Tighten threaded connections evenly.
24 Center muffler
• Original equipment as one unit with rear mufflers. For repairs, replace each separately.
• Separating point => [ Separate exhaust pipes at separating point using at a right angle. ] Service and Repair
• Install exhaust system free of stress, refer to => [ Exhaust System, Installing ] Exhaust System, Installing
25 23 Nm
26 Suspended mount
• Replace if damaged
• When installing, pay attention to direction of arrow (driving direction)
• Check pretension, refer to => [ Exhaust System, Installing ] Exhaust System, Installing
27 Bolt
28 Washer
29 Spring
30 Spacing sleeve
31 25 Nm
• Replace
32 30 Nm
• Replace
Installed position of front clamping sleeve
- When installing double clamp, ensure that the bolt end does not project over lower edge of double clamp.
• Threaded connection faces toward left.
Installed position of rear double clamps
- When installing double clamps, ensure that the bolt ends do not project beyond lower edge of double clamp.
• Threaded connections point toward outside.