transmission AUDI A4 1999 B5 / 1.G AWM Engine Exhaust System Components Workshop Manual

26-5


15 -
Mounting
Individual parts of mounting for manual
transmission Fig. 3
, Page 26
-16

Individual parts of mounting for automatic 5
speed transmission Fig. 4
, Page
26
-17

16 -
Front clamp
Align exhaust system so it is free of stress
before tightening clamp Page 26
-34

Installation position Fig. 1
, Page
26
-8
Tighten bolted connections evenly.
17 -
40 Nm
18 -
Mounting
19 -
25 Nm
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26-12


14 -
Mounting
Individual parts of mounting for manual
transmission Fig. 3
, Page 26
-16

Individual parts of mounting for automatic
transmission Fig. 4
, Page 26
-17

15 -
Front clamp
Align exhaust system so it is free of stress
before tightening clamp Page 26
-37

Installation position Fig. 1
, Page
26
-15

Tighten bolted connections evenly
16 -
40 Nm
Pa
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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
Pa
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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
Pa
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ystem com
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26-27

Catalytic converter, removing and
installing


Removing

- Remove heat shield -arrows- above right-hand drive shaft.
- Loosen bolted connection front exhaust pipe/catalytic converter
accessible from below.

Note:
The flexible connection in the front exhaust pipe must not be deflected
more than 10 to avoid damage. - Remove bolt for transmission bracket to exhaust system -arrow-.
Pa
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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
Pa
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ystem com
ponents, removin
g and installin
g
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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
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ystem com
ponents, removin
g and installin
g
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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
Pa
ge 34 of 41 Exhaust s
ystem com
ponents, removin
g and installin
g
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