lock AUDI A4 1997 B5 / 1.G AWM Engine Exhaust System Components Workshop Manual

26-1


Exhaust system components,
removing and installing

Note:

Always replace seals, gaskets and self-locking
nuts.
After working on the exhaust system ensure
that the system is not under stress, and that it
has sufficient clearance from the bodywork. If
necessary, loosen clamps and align mufflers
and exhaust pipes so that sufficient clearance is
maintained to the bodywork at all points and the
mountings are evenly loaded.
The flexible connection in the front exhaust pipe
must not be deflected more than 10 or it may
be damaged..
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26-16


Fig. 3 Individual parts of mounting for vehicles with manual
transmission
1 - Buffer
2 - Spacer pipe
3 - Washer
4 - Lug, right
5 - Disc
6 - Bolt - 25 Nm
7 - Spacer
8 - Lug, left
9 - Compression spring
10 - Bolt - 25 Nm
11 - Nut, self-locking - 25 Nm
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26-17


Fig. 4 Individual parts of mounting for vehicles with automatic
transmission
1 - Disc
2 - Buffer
3 - Link
4 - Spacer
5 - Bolt - 25 Nm
6 - Bolt
7 - Disc
8 - Compression spring
9 - Spacer
10 - Nut, self-locking - 25 Nm
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26-25


Installing
Installation is carried out in the reverse order of removal; note the
following:
Note:
Always replace seals, gaskets and self-locking nuts. - Remove all nuts -arrows- on exhaust manifold.
- Remove washers and exhaust manifold.
- Adhere to the following sequence:

Exhaust manifold to cylinder head
Exhaust turbocharger on exhaust manifold
Turbocharger bracket to cylinder block
Turbocharger bracket to turbocharger
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26-26

Tightening torques

Component
Nm
Exhaust manifold to cylinder head 30
Turbocharger to exhaust manifold
35
1)
2)
Turbocharger bracket to cylinder block
25
Turbocharger bracket to turbocharger
30
Oil feed line to cylinder head 23
Line of crankcase vent to cylinder
head
10
Hose clamps for air duct hoses
3.5

1) Replace bolts
2) Coat thread and head attachment area with
high temperature lubricant "G 052 112 A3"
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26-31

Installing
Installation is carried out in the reverse order of
removal; note the following:

Note:
Always replace seals, gaskets and self-locking
nuts.

- Grease threads of oxygen sensors with high
temperature lubricant G 052 112 A3. Apply
lubricant only to threads of sensors; the lubricant
must not get into the slots on the sensor body.

- Align exhaust system stress-free Page 26
-34

or Page 26
-37
.

Tightening torques

Components
Nm
Oxygen sensor to catalytic converter 55
Catalytic converter to exhaust turbocharger 30
Front exhaust pipe to catalytic converter 25
Front exhaust pipe to mountings on
transmission 25
Heat shield to transmission 23
Hose clamps for air duct hoses
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ystem com
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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
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ystem com
ponents, removin
g and installin
g
11/21/2002 htt
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play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE06.26.1