2000 AUDI A4 catalytic converter

26-32

Front exhaust pipe, removing and
installing


Removing

- Loosen bolted connection of front exhaust
pipe/catalytic converter accessible from above.

- Remove heat shield -arrows- above right-hand drive shaft.
- Remove crosspiece for underfloor.

- Unbolt transmission bracket for exhaust system -arrow-.
Pa
ge 33 of 41 Exhaust s
ystem com
ponents, removin
g and installin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.26.1

26-33

Note:
The flexible connection in the front exhaust pipe
must not be deflected more than 10 or it may
be damaged.

Installing
Installation is carried out in the reverse order of removal; note the
following:
Note:
Always replace seals, gaskets and self-locking nuts.
Tightening torques - Separate exhaust system at clamp -arrows-.
- Loosen bolted connection of front exhaust pipe/catalytic converter
accessible from below.
- Remove front exhaust pipe.
- Align exhaust system stress-free Page 26
-34
or Page 26
-37
.
Components
Nm
Front exhaust pipe to catalytic converter 25
Crosspiece for underbody to body 20
Heat shield to transmission 23
Pa
ge 34 of 41 Exhaust s
ystem com
ponents, removin
g and installin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.26.1

26-40

Checking exhaust system for leaks


- Start engine and run at idling speed.

- Plug tailpipes with cloths or stoppers, etc. until
leakage check is completed.

- Listen for noise at the connection points
(cylinder head/manifold, manifold/turbocharger,
turbocharger/catalytic converter, etc.) to locate
any leaks.

- Repair any leaks that are found.
Pa
ge 41 of 41 Exhaust s
ystem com
ponents, removin
g and installin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.26.1