1997 AUDI A4 Suspension Mount ABS Workshop Manual

Always replace
Pa
ge 9 of 20 Sus
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
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45-32

Installing

- Replace clamping sleeve page 45
-30
item - 2
-.

- Grease ABS wheel speed sensor all around with
assembly paste before inserting. Then, press in
by hand until fully seated.

- Reconnect ABS wheel speed sensor cable and
route cable as when removed.
When routing the ABS wheel speed sensor
cable, pay attention to the following points:

- Route ABS wheel speed sensor cable -1- below brake line -2- on left
and right sides in area shown.
- On left side, maintain clearance of about 2 cm (3/4 in.) between heat
shield for exhaust system, and ABS wheel speed sensor cable.

- On right side, route ABS wheel speed sensor cable -1- between fuel
lines -2-.
- Install wheel and tighten wheel bolts to 120 Nm (89 ft lb).
Pa
ge 11 of 20 Sus
pension mounted ABS com
ponents
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45-33

ABS wheel speed sensor rotor on FWD rear
axle, examining

- Raise vehicle.

- Remove wheel.

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

- Examine rotor for signs of dirt and damage.

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

Removing

- Raise vehicle.

- Remove wheel.

- Unbolt brake caliper page 46
-20
.

CAUTION!

Do not loosen brake hose or lines.
Secure the brake caliper with a piece of wire
Pa
ge 12 of 20 Sus
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ponents
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in order to relieve the stress on the brake
hose.
Do not allow caliper to hang by brake hose.

- Apply light blows with hammer to jaw of special tool in order to slightly
knock grease cap loose from wheel hub page 45
-30
, item -10-.
Pa
ge 13 of 20 Sus
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45-34


Installing - Press grease cap off hub.
- Remove cotter pin page 45
-30
, item -11-.
- Remove castellated lock page 45
-30
, item -9-.
- Remove hex nut page 45
-30
, item -8-.
- Remove thrust washer, outer wheel bearing, and wheel hub page
45
-30
, items -5-, -6- and -7-.
- Use copper drift inserted through tapped holes to evenly drive rotor off
wheel hub page 45
-30
, item -4-.

- Press ABS wheel speed sensor rotor onto wheel hub.
- Position wheel hub, outer wheel bearing and thrust washer on stub
axle.
- Install hex nut page 45
-30
, item -8-.
Pa
ge 14 of 20 Sus
pension mounted ABS com
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45-35


Note:
Wheel bearing play is correctly set if it is just possible to move the thrust
washer with a screwdriver by applying finger pressure (without any
prying). - Adjust wheel bearing play.
- To adjust, tighten hex nut while rotating wheel in order to avoid stress
on bearing.
- Secure hex nut with castellated lock and new cotter pin.

CAUTION!
Always replace the grease cap. Any damage to the cap will allow
moisture in, which can destroy the wheel bearing. - Install grease cap.
- Install brake caliper page 46
-20
.
Pa
ge 15 of 20 Sus
pension mounted ABS com
ponents
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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