Audi 2003 A8, Workshop Manual

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– Fit exhaust manifold (front right) with catalytic converter to cyl‐
inder head and tighten nuts ⇒ page 226 .
– Install coolant pipe (right-side) ⇒ page 202 .
– Align exhaust system free of stress after installing engine
⇒ page 240 .
Tightening torques
♦
⇒ “1.1 Exhaust system - exploded view”, page 224
♦ ⇒ Fig. ““Exhaust manifold (front right) - tightening torque and
sequence”“ , page 226
♦ ⇒ Fig. ““Exhaust manifold (rear right) - tightening torque and
sequence”“ , page 226
1.5 Removing and installing Y-pipe (left-
side)
Removing
– Open quick-release fasteners -2- and remove rear noise in‐
sulation.
– Remove bracket for electrical connectors -1 ... 4- for Lambda
probes from subframe -arrow-.
– Take electrical connector -1- for Lambda probe 4 after catalytic
converter - G288- out of bracket on gearbox and unplug it.
Audi A8 2003 ➤
10-cylinder direct petrol injection engine (5.2 ltr. 4-valve), mechanics - Edition 10.2013
236
Rep. gr.26 - Exhaust system