AUDI A4 1999 B5 / 1.G Suspension Mount ABS Workshop Manual

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
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pension mounted ABS com
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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
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ponents
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45-26


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
5 -
Boot seal
Pa
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45-27

ABS wheel speed sensor on front axle,
removing and installing

Removing

- Loosen wheel bolts.

- Raise vehicle.

- Remove wheel.

Installing - Detach boot -1- from wheel housing.
- Separate harness connector -2- from ABS wheel speed sensor
harness.
- Pull harness out of brackets (arrows).
- Remove ABS wheel speed sensor from wheel bearing housing.
- Before inserting ABS wheel speed sensor, install boot seal and grease
sensor all around with assembly paste.
- Press speed sensor in by hand until fully seated.
- Connect ABS wheel speed sensor cable harness connector and press
boot into wheel housing.
- After routing ABS wheel speed sensor cable (arrows), install wheel and
tighten wheel bolts to 120 Nm (89 ft lb).
Pa
ge 4 of 20 Sus
pension mounted ABS com
ponents
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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
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pension mounted ABS com
ponents
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The outer CV joint is supplied as a replacement
part with the rotor.
Pa
ge 6 of 20 Sus
pension mounted ABS com
ponents
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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
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yp
e=re
pair&id=AUDI.B5.SU03.45.4

45-30


2 -
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
3 -
Axle beam/rear axle with splash guard
and stub axle
4 -
ABS wheel speed sensor rotor Removing and installing page 45
-33
5 -
Brake disc with wheel hub
6 -
Outer wheel bearing
7 -
Thrust washer
8 -
Hex nut
Adjusting page 45
-33
9 -
Castellated lock
Install onto hex nut
10 -
Grease cap Replace
11 -
Cotter pin
Pa
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pension mounted ABS com
ponents
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Always replace
Pa
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pension mounted ABS com
ponents
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45-31

ABS wheel speed sensor on FWD rear axle,
removing and installing

Removing

- Switch ignition off.

- Lift rear seat out of its brackets.

- Detach cable holder (right arrow), separate ABS wheel speed sensor
harness connector and press out grommet (left arrow). Left and right
sides are mirror images.
- Loosen wheel bolts.
- Raise vehicle.
- Remove wheel.

- Pull ABS wheel speed sensor cable out of brackets.
- Pull ABS wheel speed sensor out of axle beam.
Pa
ge 10 of 20 Sus
pension mounted ABS com
ponents
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yp
e=re
pair&id=AUDI.B5.SU03.45.4