Subaru SVX 1992 Manual page 893

BRAKES [W12C0] 4-4
2. TONE WHEEL
1) Check tone wheel's teeth (45 pieces) for cracks or
dents . If necessary, replace tone wheel with a new one .
2) Clearances (sensor gaps) should be measured one
by one to ensure tone wheel and ABS sensor are
installed correctly .
ABS sensor clearance :
Front
0.7 - 1.0 mm (0.028 - 0.039 in)
Rear
0.5 - 1.0 mm (0.020 - 0.039 in)
a . If clearance is narrow, adjust by using ADJUST-
MENT SPACER (P/# 26755AA000)
b. If clearance is wide, check the outputted voltage
then replace ABS sensor or tone wheel if the outputted
voltage is outside the specification .
FRONT
Tone wheel
REAR
Tone wheel
u I
ABS sensor
ABS sensor
Sensorgap
Sensor gap
Rear hub
Front hub
84-$78
Fig. 143
3. OUTPUT VOLTAGE
1) Output voltage can be checked by the following
method . Install resistor and condenser as follows, then
rotate wheel about 2.75 km/h (1 .7 MPH) or equivalent.
Osil loscorp
To terminal 3.9 kn
+60 mV
I 0
20 kn 12 wrFl
120 kn
-60 mV
To terminal
Standard output voltage : More than 120 mV
84-429
Fig . 144
Regarding terminal No., please refer to item ABS SEN-
SOR .
C: INSTALLATION
1) To install, reverse removal procedures .
2) Place a thickness gauge between ABS sensor's pole
piece and tone wheel's tooth face . After ABS sensor
clearance is obtained over the entire perimeter, tighten
ABS sensor on housing to specified torque.
ABS sensor clearance :
Front
0.7 - 1 .0 mm (0 .028 - 0.039 in)
Rear
0.5 - 1 .0 mm (0 .020 - 0.039 in)
a. If the clearance is outside specifications, readjust.
b . Sometimes adjustment spacer may not need be
installed .
63