AUDI A4 1998 B5 / 1.G AEB ATW Engines Exhaust System Components Owner's Guide

26-24

Exhaust system, aligning free of stress


Align exhaust system when cold

Front-wheel-drive vehicles

- Remove double clamp bolts Page 26
-2 , item
2 .

Aligning tailpipes: - Push exhaust system forward (arrow) until tension on rear mount
equals dimension -a-.
Dimension -a- = 7-9 mm (0.275-0.354 in.)
- Tighten double clamp bolts evenly to 40 Nm (30 ft lb).

- Align tailpipes so distance -a- on left and right side is equal.
- Distance -b- between bumper cutout and tailpipes must equal
specification.
Distance -b- = 40-46 mm (1.57-1.81 in.)
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26-25

All-wheel-drive vehicleswithout double clamp
between front and rear mufflers

- Remove double clamp bolts Page 26
-9 , item
- 12 -.

Aligning tailpipes: - Push exhaust system forward (arrow) until initial preload on right rear
mount equals dimension -a-.
Dimension -a- = 7-11 mm (0.275-0.433 in.)
- Tighten double clamp bolts evenly to 40 Nm (30 ft lb).

- Align tailpipes so distance -a- on left and right-sides is equal.
- Distance -b- between bumper cutout and tailpipes must equal
specification.
Distance -b- = 41-47 mm (1.614-1.850 in.)
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11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.26.1

26-26

All-wheel-drive vehicleswith double clamp
between front and rear mufflers

Note:
Only for vehicles with double clamp between
front and rear mufflers: also align front muffler.

- Remove double clamp bolts Page 26
-9 , item
- 12 - and Page 26
-10
, item - 22 -.

- Push exhaust system forward (arrow) until initial preload on left rear
mount equals dimension -a-.
Dimension -a- = 7-9 mm (0.275-0.354 in.)
- Tighten front double clamp bolts evenly to 40 Nm (30 ft lb) Page 26
-
9 , item - 12 -.
Pa
ge 33 of 35 Exhaust s
ystem com
ponents, removin
g and installin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.26.1

26-27


Aligning tailpipes: - Push exhaust system forward (arrow) until initial preload on right-rear
mount equals dimension -a-.
Dimension -a- = 7-11 mm (0.275-0.433 in.)
- Tighten rear double clamp bolts evenly to 40 Nm (30 ft lb) Page 26
-
10
, item - 22 -.

Distance -b- between bumper cutout and tailpipes must equal
specification.
Specification: - Align tailpipes so distance -a- on left and right side is equal.
Distance -b- = 41-47 mm (1.614-1.850 in.)
Pa
ge 34 of 35 Exhaust s
ystem com
ponents, removin
g and installin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.26.1

26-28

Exhaust system, checking for leaks


- Start engine and run at idle.

- Seal tailpipes with cloths or equivalent for
duration of leak test.

- Listen for leaks at following connections:
cylinder head/exhaust manifold, exhaust
manifold/turbocharger, turbocharger/Three Way
Catalytic Converter (TWC), etc.

- Repair leaks.
Pa
ge 35 of 35 Exhaust s
ystem com
ponents, removin
g and installin
g
11/18/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE02.26.1