2000 AUDI A4 air suspension

45-24


Suspension mounted ABS
components Front suspension ABS components,
removing and installing

WARNING!

Do not re-use any fasteners that are worn or
deformed in normal use.
Some fasteners are designed to be used only
once, and are unreliable and may fail if used
a second time. This includes, but is not
limited to, nuts, bolts, washers, circlips and
cotter pins. Always follow the
recommendations in this manual-replace
these fasteners with new parts where
indicated, and any other time it is deemed
necessary by inspection.
1 -
ABS wheel speed sensor
Identical part on left and rightRemoving and installing page 45
-27
Harness connector for ABS wheel speed
sensor page 45
-27

Pa
ge 1 of 20 Sus
pension mounted ABS com
ponents
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pair&id=AUDI.B5.SU03.45.4

45-25


WARNING!
Do not loosen and tighten hex bolt - 3 - unless
car is standing on its wheels-risk of accident. 2 -
Drive axle with ABS wheel speed sensor
rotor
Examine rotor for signs of dirt and damage
page 45
-28

If rotor is damaged, replace outer CV joint
together with rotor Repair Manual, Suspension, Wheels, Steering, Repair Group 40

Outer CV joint is supplied as replacement
part with ABS wheel speed sensor rotor
3 -
Collar bolt Always replaceBe aware of different versionsM14 thread: tighten to 115 Nm (85 ft lb)
plus additional 1/2-turn (180 ) M16 thread: tighten to 190 Nm (140 ft lb)
plus additional 1/2-turn (180 )
Pa
ge 2 of 20 Sus
pension mounted ABS com
ponents
11/19/2002 htt
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yp
e=re
pair&id=AUDI.B5.SU03.45.4

45-28

- Turn steering to full left and full right lock and
check clearance of ABS wheel speed sensor
cable.

ABS wheel speed sensor rotor on front axle,
examining

- Raise vehicle.

- Remove wheel.

- Pull ABS wheel speed sensor out of wheel
bearing housing.

- Examine rotor for signs of dirt and damage,
working through ABS wheel speed sensor
mounting hole in wheel bearing housing.

Note:

If the rotor is dirty or damaged, remove the
drive axle. If the rotor is damaged, replace the
outer CV joint along with the rotor.

Repair Manual, Suspension, Wheels,
Steering, Repair Group 40

Pa
ge 5 of 20 Sus
pension mounted ABS com
ponents
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.4

45-29


Rear suspension ABS components for
FWD models, removing and installing

WARNING!

Do not re-use any fasteners that are worn or
deformed in normal use.
Some fasteners are designed to be used only
once, and are unreliable and may fail if used
a second time. This includes, but is not
limited to, nuts, bolts, washers, circlips and
cotter pins. Always follow the
recommendations in this manual-replace
these fasteners with new parts where
indicated, and any other time it is deemed
necessary by inspection.
1 -
ABS wheel speed sensor
Identical part on left and rightRemoving and installing page 45
-31
Release harness connector of ABS speed
sensor cable and separate. Unclip speed
sensor cable.
Pa
ge 7 of 20 Sus
pension mounted ABS com
ponents
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.4

45-36


Rear suspension ABS components for
AWD models, removing and installing

WARNING!

Do not re-use any fasteners that are worn or
deformed in normal use.
Some fasteners are designed to be used only
once, and are unreliable and may fail if used
a second time. This includes, but is not
limited to, nuts, bolts, washers, circlips and
cotter pins. Always follow the
recommendations in this manual-replace
these fasteners with new parts where
indicated, and any other time it is deemed
necessary by inspection.
Pa
ge 16 of 20 Sus
pension mounted ABS com
ponents
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.4

45-37


1 -
Drive axle with ABS wheel speed sensor
rotor
Examine rotor for signs of dirt and damage
page 45
-40

If the rotor is damaged, replace outer CV
joint along with rotor Repair Manual, Suspension, Wheels, Steering, Repair Group 42

Outer CV joint is supplied as replacement
part with rotor
2 -
ABS wheel speed sensor Identical part on left and rightClean inside surface of hole before
inserting sensor Replacing page 45
-39
3 -
Boot seal
4 -
Clamping sleeve
Always replaceIdentical part on left and rightGrease all around with assembly paste
before inserting into wheel bearing housingPress into wheel bearing housing until fully
seated
Pa
ge 17 of 20 Sus
pension mounted ABS com
ponents
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.4

45-40


Installing
ABS wheel speed sensor rotor on AWD rear axle, examining
Note:
Repair Manual, "Suspension, Wheels, Steering", Repair Group 42
- Release ABS wheel speed sensor harness from holder (arrow).
- Pull ABS wheel speed sensor out of wheel bearing housing.
- Replace clamping sleeve page 45
-37
item - 4 -.
- Before inserting wheel speed sensor, install boot seal and grease
sensor all around with assembly paste. Then, press in wheel speed
sensor by hand until fully seated.
- Re-route sensor harness in reverse order of removal.
- Raise vehicle.
- Remove wheel.
- Pull ABS wheel speed sensor out of wheel bearing housing.
- Examine rotor for signs of dirt and damage.
If the rotor is dirty or damaged, remove the drive axle. If the rotor is
damaged, replace the outer CV joint together with the rotor. The outer CV joint is supplied as a replacement part with the rotor.
Pa
ge 20 of 20 Sus
pension mounted ABS com
ponents
11/19/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.SU03.45.4