Exhaust System Components, Removing and Installing
Exhaust System Components, AWD, Removing And Installing
1 - Turbocharger
2 - Gasket
- Replace
3 - Front exhaust pipe
- with decoupling element
- protect from shocks and impact stress
- do not over-bend flex pipe, max. flex 10 degrees
- Distance between exhaust pipe and heat shield, Distance between exhaust pipe and heat shield for steering gear at least 24 mm
4 - Heated Oxygen Sensor (HO2S) G39 50 Nm
- Lubricate threads only with "G5"; "G5" must not get onto slits on sensor body
- Oxygen sensor connector under protective cover
- Oxygen sensor and oxygen sensor control before catalytic converter, checking
- Oxygen sensor heating for oxygen sensor before catalytic converter, checking
5 - Oxygen Sensor O2S Behind Three Way Catalytic Converter (TWC) G130 50 Nm
- Lubricate threads only with "G5"; "G5" must not get onto slits on sensor body
- Oxygen sensor connector under protective cover
- Oxygen sensor and oxygen sensor control behind catalytic converter, checking
- Oxygen sensor heating for oxygen sensors behind catalytic converter, checking
6 - Catalytic converter
7 - Suspended mount
- for aligning center tailpipe to bumper
8 - 25 Nm
9 - Front and rear muffler
- For repairs, replace each separately.
- Exhaust pipe with separating point
10 - 25 Nm
11 - Suspended mount
12 - Retaining loop
13 - Bracket
- with bore for aligning exhaust system
14 - 25 Nm
15 - Clamping sleeve
- Before tightening, ensure exhaust system is tension-free
- Installation location: Horizontally in vehicle, bolt points to the left
- Tighten bolts evenly
16 - Seals
- Replace
17 - 25 Nm
18 - 40 Nm
19 - Spacer sleeve
- for all four nuts
Separating point
- for individual replacement of front or rear muffler
- marked by three depressions around the circumference of the exhaust pipe.
- Using body repair saw, e.g. V.A.G 1523, cut exhaust pipe at separating point - arrow 2 - at right angle.
- When installing, position clamping sleeves - 4 - at side markings -arrows 1 and 3-.
- Align rear muffler horizontally.
- Tighten clamping sleeve bolts uniformly to 40 Nm.
- Clamping sleeve installation location: Horizontally in vehicle, bolts point to the front
Suspended mount location (vehicles with front wheel drive)
Angled side - arrow - at foot of suspended mount faces front of vehicle.
Distance between exhaust pipe and heat shield for steering gear at least 24 mm
- To measure distance, connect 17 mm 1/2-inch socket insert (diameter approx. 24 mm) to a long extension and slide it between front pipe and shielding plate. Socket wrench insert should easily slide in between.