Subaru Impreza 3 / Impreza WRX / Impreza WRX STI. Service manual — part 569
PB-7
Parking Brake Assembly (Rear Disc Brake)
PARKING BRAKE
8) Remove the brake shoe cup and brake shoe
spring, and remove the primary brake shoe.
9) Remove the strut and strut spring.
10) Remove the adjuster.
11) Remove brake shoe cup and brake shoe
spring, and remove the secondary brake shoe.
12) Remove the parking brake cable from lever.
13) Remove a retainer from the secondary side
brake shoe. Remove the lever from the brake shoe.
B: INSTALLATION
CAUTION:
Be sure the lining surface is free from brake flu-
id and grease.
1) Apply brake grease to the following locations.
Brake grease:
Brake Grease (Part No. 003602002)
• Six contact surfaces of the brake shoe rim and
back plate gasket
• Contact surface of the brake shoe and the an-
chor pin
• Contact surface of the parking brake lever and
strut
• Contact surface of the brake shoe and adjuster
• Contact surface of the brake shoe and strut
• Contact surface of the lever and brake shoe
2) Install the wave washer and lever to the second-
ary side brake shoe pin, and lock the retainer se-
curely.
3) Install the parking brake cable to the lever.
4) Install the adjuster and adjusting spring to the
brake shoe.
NOTE:
Install the adjuster with screw section on the direc-
tion side in the figure below.
5) Check that the parking brake cable does not fall
from the cable guide.
6) Install the brake shoes to the back plate with
shoe hold pins, brake shoe springs, and brake
shoe cups.
7) Install the strut and strut spring to the brake
shoes.
NOTE:
Install the strut springs on front side of the vehicle.
8) Install the return springs on the primary side first,
and then the secondary side.
9) Install the rear disc rotors and rear caliper body
assembly.
Tightening torque:
Caliper body assembly (brembo type)
65 N·m (6.63 kgf-m, 47.9 ft-lb)
Caliper body assembly (except for brembo
type)
66 N·m (6.73 kgf-m, 48.7 ft-lb)
10) Install the brake hose bracket.
Tightening torque:
33 N·m (3.36 kgf-m, 24.3 ft-lb)
11) Adjust the parking brake. <Ref. to PB-8, AD-
JUSTMENT, Parking Brake Assembly (Rear Disc
12) If new brake shoes are replaced, drive the ve-
hicle to break-in the parking brake lining.
(1) Drive the vehicle at approximately 35 km/h
(22 MPH) or more.
(1) Brake shoe cup
(2) Primary brake shoe
(1) Parking brake cable
(2) Lever
(1)
(2)
PB-00096
PB-00014
(1) Left wheel: front side of vehicle, right wheel:
rear side of vehicle
PB-00840
PB-8
Parking Brake Assembly (Rear Disc Brake)
PARKING BRAKE
(2) While pressing the parking brake lever but-
ton, pull the parking brake lever with a force of
150 N (15.3 kgf, 33.7 lbf).
(3) Drive the vehicle for about 200 m (0.12 mile)
in this condition.
(4) Wait 5 to 10 minutes for the parking brake to
cool down. Repeat steps (1) through (3) again.
(5) After breaking-in, re-adjust the parking
brakes.
C: INSPECTION
1) Measure the inner diameter of the disc rotor. If
scoring or worn is found on the disc, replace the
disc rotor.
Disc rotor inner diameter:
Standard
190 mm (7.48 in)
Service limit
191 mm (7.52 in)
2) Measure the lining thickness. If it exceeds the
limit, replace the brake shoe.
Lining thickness:
Standard
2.8 mm (0.11 in)
Service limit
1.5 mm (0.059 in)
NOTE:
Replace the right and left brake shoe as a set.
D: ADJUSTMENT
1. SHOE CLEARANCE
1) Return the parking brake lever fully.
2) Loosen the adjusting nut, and make the cable
free.
3) Remove the adjusting hole cover from the disc
rotor.
4) Using a flat tip screwdriver, turn the adjuster in
the direction of the arrow as shown in the figure to
an extent that the disc rotor cannot be rotated by
both hands.
5) Loosen the adjuster by 5 notches in the opposite
direction of the arrow.
CAUTION:
• Check there is no brake drag.
• If the return amount of adjuster is insuffi-
cient, be sure to loosen it by 5 notches to avoid
dragging.
6) Install the adjusting hole cover to the disc rotor.
7) Adjust the parking lever stroke. <Ref. to PB-8,
LEVER STROKE, ADJUSTMENT, Parking Brake
2. LEVER STROKE
1) Adjust the shoe clearance before adjusting lever
stroke. <Ref. to PB-8, SHOE CLEARANCE, AD-
JUSTMENT, Parking Brake Assembly (Rear Disc
2) Remove the parking lever cover.
3) Pull the parking brake lever hard 3 to 5 times.
4) Turn the adjusting nut until the lever stroke is at
the specified value.
Lever stroke:
7 to 8 notches when pulled with a force of 200
N (20.4 kgf, 45 lbf)
5) Check there is no brake drag.
6) Install the parking lever cover.
(1) Adjuster
(2) Flat tip screwdriver
(3) Disc rotor
(1)
(3)
(2)
PM-00537
(1) Adjusting nut (self-locking nut)
PB-00054
(1)
PB-9
General Diagnostic Table
PARKING BRAKE
5. General Diagnostic Table
A: INSPECTION
Symptoms
Possible cause
Corrective action
Brake drag
Parking brake lever not adjusted correctly.
Adjust.
Parking brake cable does not move.
Repair or replace.
Parking brake shoe clearance is maladjusted.
Adjust.
Return spring is faulty.
Replace.
Noise from brake
Return spring is faulty.
Replace.
Shoe hold-down spring faulty.
Replace.
PB-10
General Diagnostic Table
PARKING BRAKE
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