1987 MAZDA 626 ECU

POWER BRAKE UNIT 1 1
76G11X-071
Disassembly Note
Front and rear shells
1. Secure the front shell studs in a vise after attach-
ing suitable nuts to them to prevent damage to the
studs.
2. Before separating the front and rear shell assem-
blies, make matching marks to be used in reas-
sembly.
3. Fit a wrench onto the rear shell studs; then fasten
two of them with suitable nuts.
4. Rotate the rear shell counterclockwise to unlock.
Caution
The rear shell is spring loaded; loosen it
carefully.
Retainer key
Depress the plunger rod fully; then remove the re-
tainer key.
86U11X-049
86U11X-050
Assembly Note
Application of Grease
Before assembly, coat the parts shown in the figure
with silicon grease.
(1) Entire surface of reaction disc
(2) Dust seal lip
(3) Push rod
(4) Diaphragm-to-shell contacting surfaces
(5) Power piston
(6) Valve plunger oil seal
Retainer key
1. Push down the plunger rod.
2. Align the groove of the valve plunger with the slot
of the power piston.
3. Insert the retainer key.
86U11X-051
11—31

REAR DISC BRAKE 1 1
86U11X-093
86U11X-094
86U11X-095
Piston seal
Remove the piston seal with the SST.
Needle bearing
1. Secure the caliper in a vise.
Caution
Insert a soft, protective material (such as cop-
per plates) in the jaws of the vise.
2. Remove the needle bearing from the caliper with
the SST.
Inspection Note
Check the following and repair or replace any faulty
parts.
1. Cylinder and piston for wear and rust
2. Caliper body for damage and cracks
3. Sleeve bolt and sleeve for damage and wear
4. Guide pin for damage and rust
5. Adjuster spindle threads for damage
Assembly Note
Application of grease
Before assembly, apply the grease supplied in the
seal kit to the parts indicated by the arrows.
Orange grease
White grease
Red grease
86U11X096
11-51

1 1 REAR DRUM BRAKE
Brake drum
1. Move the quadrant against the backing plate with
a screwdriver and increase the shoe clearance.
2. Install the brake drum.
Note
The shoe clearance will be automatically ad-
justed by applying the parking brakes.
76G11X089
Locknut
Tighten the new locknut to the specified torque and
securely stake it to the spindle groove.
Tightening torque:
98—177
N
m (10—18 m-kg, 72—130 ft-lb)
Caution
Do not use a pointed tool for staking.
86U11X-129
11-64

1 1 ANTI-LOCK BRAKE SYSTEM (ABS)
86U11X-170
86U11X-171
Removal of Front Wheel Speed Sensor
1. Remove the wheel and tire.
2. Remove the parts shown in the figure, and remove
the sensor from the knuckle.
Installation of Front Wheel Speed Sensor
1. Install the sensor to the knuckle.
Tightening torque:
16—23 N m (1.6—2.3 m-kg, 12—17 ft-lb)
Caution
The left and right sensors are not interchange-
able. L or R is indicated on the bracket.
2. Install the sensor harness bracket onto the knuckle.
Tightening torque:
16—23 Nm (1.6—2.3 m-kg, 12—17 ft-lb)
3. Push the sensor harness through the splash shield
and secure it with the clip.
4. Install the sensor harness bracket to the body.
Tightening torque:
16—23 Nm (1.6—2.3 m-kg, 12—17 ft-lb)
Caution
Verify that the harness is not twisted and does
not contact the shock absorber or body when
the steering wheel is turned.
5. Connect the sensor connector.
6. Install the wheel and tire.
86U11X-172
11-88

ANTI-LOCK BRAKE SYSTEM (ABS) 1 1
Installation of Rear Sensor Rotor
Install in the reverse order of removal, referring to installation note for the specially marked parts.
Torque specifications
86U11X-184
Installation
Sensor rotor
Press the sensor rotor onto the hub with the SST.
86U11X-185
Locknut
1. Install and tighten the locknut.
2. Stake a new locknut securely in the driveshaft
groove.
Caution
Do not use a pointed tool for staking.
3. Check that the hub rotates freely by hand.
86U11X-186
11—93

1 3 FRONT SHOCK ABSORBER AND SPRING
76G13X-015
I N
49 G034 102 1
| 49 G034 103 | iBHssfllil 49 G034 101 |
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LojaiiaiciS]
86U13X-018
76G13X-016
Disassembly Note
1. Loosen the piston rod upper nut several turns, bu
do not remove.
Caution
a) Do not remove the nut.
b) Use copper or aluminum plates in the jawj
of a vice.
2. Set the SST in a vise.
3. Secure the shock absorber in the SST.
4. Compress the coil spring with the SST, then re
move the upper nut.
5. Remove the coil spring.
Inspection Note
Check the following and repair or replace any fault}
parts.
1. Oil leakage or abnormal noise from shock ab
sorbers
2. Deterioration or damage of mounting block anc
bearing
3. Wear or damage of bound stopper
4. Smooth rotation of control rod (AAS)
86U13X-020
13—16

FRONT SHOCK ABSORBER AND SPRING 1 3
Assembly Note
1. Set the SST in a vise
2. Secure the shock absorber in the SST.
3. Install the bound stopper and dust boot to the
shock absorber.
4. Install the compressed coil spring (compressed
with SST).
5. Install the rubber seat, spring upper seat, bearing
and mounting block.
86U13X-021
6. Remove the SST.
7. Secure the mounting block in a vise.
Caution
Use copper or aluminum plates in the jaws of
a vice.
8. Tighten the piston rod upper nut.
Tightening torque:
64—84 Nm (6.5—8.2 m-kg, 47—59 ft-lb)
Caution
Check that the spring is well seated in the up-
per seats.
13—17

1 3 REAR SHOCK ABSORBER AND SPRING
DISASSEMBLY AND ASSEMBLY
1. Disassemble in the sequence shown in the figure the referring to the disassembly note for specially
marked parts.
2. Inspect all components and parts, referring to inspection note.
3. Assemble in the reverse order of disassembly, referring to the assembly note for specially marked
parts.
4. Tighten all nuts and bolts to the specified torque, referring to the figure.
76G13X022
1. Nut
2. Seat
3. Mounting block
4. Spring seat 7. Coil spring
5. Dust boot 8. Shock absorber
6. Bound stopper
Disassembly Note
1. Loosen the piston rod upper nut several turns, but
do not remove.
Caution
a) Do not remove the nut.
b) Use copper or aluminum plates in the jaws
of the vise.
2. Set the SST in a vise.
3. Secure the shock absorber in the SST.
4. Compress the coil spring with the SST, then re-
move the nut.
5. Remove the coil spring. 86U13X-061
13-32