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928
Anti-lock
Braking
System
45
REMOVING AND INSTALLING SPEED SENSORS ON FRONT AND REAR AXLES, 86 MODELS
ONWARD
Front
Axle
l.Coat
speed sensor
and hole
in
steering
knuckle
with
Molykote
Removing
Longterm
2. Renew speed sensor
ring.
l.With
ignition
switched
off,
open
ABS cable
plug-in
connector
on
the steering
knuckle
and
-
disconnect.
o-
493
Z.Unscrew
mounting
bolt
(Allen
bolt)
of speed sensor
and with-
draw sensor
from steering
knuckle.
Installing
Note:
- Do not remove speed sensor
from
its
protective
package
until
shortly
before
installation
(loss
of permanent
magnetism)
- Before
installation,
check that
no forei
n bodies
(metal
shavings 7 have been caught
on the
magnetic
edge of the speed
sensor.
Z.Without
using
force,
insert
sensor
in steering
knuckle
and
tighten
Allen
bolt
to secure.
(Torque
10 Nm (7ftlb)).
Note:
The distance
between
speed sensor
and impulse
ring
is a design
feature
and cannot
be adjusted.
J.Reconnect
cable
and place
in
holder
on steering
knuckle.
4.Check
operation
with
A8S tester.
Printed
in Germany - XIII,
1986
Removing
and Installing
Speed
45 - 11
Sensor,
86 Models
Onward
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