Separating Y-Pipe And Rear Silencers - Audi A8 2003 Workshop Manual

Audi A8 2003 ➤
8-cylinder TDI engine (4.2 ltr. 4-valve common rail), mechanics - Edition 12.2013
– Unscrew temperature sender before particulate filter - G506-
-item 3- from particulate filter/main catalytic converter (left-
side).
Note
Ignore items marked -1-, -2- and -4-.
Installing
Installation is carried out in the reverse order; note the following:
Note
Fit all cable ties in the original positions when installing.
– Note correct installation position of temperature sender before
particulate filter - G506- :
• Angle -α- = 44°
– Align exhaust system so it is free of stress
– Install subframe ⇒ Rep. gr. 40 .
Tightening torques
Component
Temperature sender before particulate filter -
G506- to starter catalytic converter
Exhaust pipe to centre bracket
Tunnel cross member to body
• 1)
Coat thread with high-temperature paste; for high-temper‐
ature paste refer to ⇒ Electronic parts catalogue .
1.9

Separating Y-pipe and rear silencers

♦ The connecting pipe can be cut through at the point marked
in order to renew the Y-pipe and rear silencers separately.
♦ The cutting point is marked by an indentation on the outside
of the exhaust pipe.
Special tools and workshop equipment required
♦ Chain pipe cutter - VAS 6254-
294
Rep. gr.26 - Exhaust system
⇒ page 313 .
Nm
1)
45
25
40
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