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❑ Removing and installing: left-side
9 - Lambda probe after catalytic converter - G131-
❑ For exhaust bank II (cylinders 4, 5)
❑ Removing and installing ⇒ Rep. gr. 24
10 - 23 Nm
❑ Renew
11 - Gasket
❑ Renew
12 - Front silencer
❑ With flexible joint
❑ Do not bend flexible joint more than 10° – otherwise it can be damaged
❑ Removing and installing: left-side
❑ Align exhaust system so it is free of stress
13 - Y-pipe
❑ With flexible joint
❑ Do not bend flexible joint more than 10° – otherwise it can be damaged
❑ Removing and installing: left-side
❑ Align exhaust system so it is free of stress
14 - 23 Nm
❑ Renew
15 - Lambda probe after catalytic converter - G130-
❑ For exhaust bank I (cylinders 1, 2, 3)
❑ Removing and installing ⇒ Rep. gr. 24
16 - Gasket
❑ Renew
17 - Exhaust manifold (front) with catalytic converter
❑ For exhaust bank I (cylinders 1, 2, 3)
❑ Protect against knocks and impact
❑ Removing and installing: left-side
18 - Lambda probe - G39- (before catalytic converter)
❑ For exhaust bank I (cylinders 1, 2, 3)
❑ Removing and installing ⇒ Rep. gr. 24
Exhaust manifold (front left) - tightening torque and sequence
– Tighten nuts in 3 stages in the sequence shown:
Stag
e
Nuts
Tightening torque
1.
-1 … 9-
Screw in by hand until nuts make con‐
tact with exhaust manifold
2.
-1 … 9-
10 Nm
3.
-1 … 9-
25 Nm
Audi A8 2003 ➤
10-cylinder direct petrol injection engine (5.2 ltr. 4-valve), mechanics - Edition 10.2013
1. Exhaust system
225
