Subaru Legacy IV (2008 year). Service manual — part 957
BR-40
Stop Light Switch
BRAKE
2. CHECK RESISTANCE
1) If the stop light switch does not operate properly,
replace with a new part.
2) Measure the resistance of stop light switch ter-
minals.
D: ADJUSTMENT
Loosen the lock nut, and adjust the stop light switch
position until the clearance between the threaded
end of the stop light switch and stopper (A) be-
comes 0.3 mm (0.012 in). Then, tighten the lock
nut.
Tightening torque:
8 N·m (0.8 kgf-m, 5.8 ft-lb)
NOTE:
Tighten lock nut B until the threaded end of switch
contacts the stopper. Hold the switch so that it does
not rotate, and loosen the lock nut B approx. 60°.
The clearance (A) will become 0.3 mm (0.012 in).
Pedal
Terminal No.
Standard value
Released
1 and 4
Less than 1
:
2 and 3
1 M
: or more
Depressed
1 and 4
1 M
: or more
2 and 3
Less than 1
:
(1) Stop light switch
(2) Lock nut A
(3) Lock nut B
(4) Stopper
(5) Brake pedal
BR-00643
1
2
3
4
(5)
(4)
(1)
A
(2)
(3)
BR-00111
BR-41
General Diagnostic Table
BRAKE
16.General Diagnostic Table
A: INSPECTION
Trouble and possible cause
Corrective action
1. Insufficient braking (1) Fluid leakage from the hydraulic mechanism
Correct or replace. (cup, piston seal, piston
boot, master cylinder piston kit, pipe or
hose)
(2) Entry of air into the hydraulic mechanism
Bleed air.
(3) Wear, deteriorated surface material, water or fluid on
lining
Replace, grind or clean.
(4) Improper operation of master cylinder, disc caliper,
brake booster or check valve
Correct or replace.
2. Unstable or uneven
braking
(1) Fluid on lining or rotor
Correct the cause of fluid leakage, and
clean or replace.
(2) Rotor defective
Repair or replace the rotor.
(3) Improper lining contact, deteriorated surface, deterio-
rated or worn lining material
Repair by grinding, or replace.
(4) Deformed back plate
Correct or replace.
(5) Overinflation of tires
Adjust the air pressure.
(6) Defective wheel alignment
Adjust alignment.
(7) Loose back plate or support installation bolt
Tighten to the specified torque.
(8) Faulty wheel bearing
Replace.
(9) Defective hydraulic system
Replace the cylinder, brake pipe or hose.
(10) Unstable performance of the parking brake
Check, adjust or replace the rear brake and
cable system.
3. Excessive pedal
stroke
(1) Entry of air into the hydraulic mechanism
Bleed air.
(2) Excessive play in the master cylinder push rod
Adjust.
(3) Fluid leakage from the hydraulic mechanism
Correct or replace. (cup, piston seal, piston
boot, master cylinder piston kit, pipe or
hose)
(4) Improper lining contact or worn lining
Correct or replace.
4. Brake dragging or
improper brake
return
(1) Insufficient pedal play
Adjust play.
(2) Improper master cylinder return
Clean or replace the cylinder.
(3) Clogged hydraulic system
Replace.
(4) Improper return or adjustment of parking brake
Repair or adjust.
(5) Weakened spring tension or breakage of shoe return
spring
Replace the spring.
(6) Improper disc caliper operation
Correct or replace.
(7) Faulty wheel bearing
Replace.
5. Brake noise (1)
(creaking sound)
(1) Hardened or deteriorated brake pad
Replace the pad.
(2) Worn brake pad
Replace the pad.
(3) Loose back plate or support installation bolt
Tighten to the specified torque.
(4) Loose wheel bearing
Tighten to the specified torque.
(5) Dirty rotor
Clean the rotor, or clean and replace brake
assembly.
6. Brake noise (2)
(hissing sound)
(1) Worn brake pad
Replace the pad.
(2) Improperly installed pad
Correct or replace the pad.
(3) Loose or bent rotor
Retighten or replace.
7. Brake noise (3)
(click sound)
Excessively worn pad or support
Replace the pad or the support.
BR-42
General Diagnostic Table
BRAKE
PB-2
General Description
PARKING BRAKE
1. General Description
A: SPECIFICATION
B: COMPONENT
1. PARKING BRAKE (REAR DISC BRAKE)
Type
Mechanical, drum in disc rear brakes
Effective drum diameter
mm (in)
170 (6.69)
Lining dimensions
(Length × Width × Thickness)
mm (in)
163.1 × 30.0 × 3.2
(6.421 × 1.181 × 0.126)
Clearance adjustment
Manual adjustment
Lever stroke
notches/N (kgf, lb)
5 — 6/200 (20.4, 45)
(1)
Back plate
(7)
Strut spring
(13)
Adjuster
(2)
Retainer
(8)
Strut
(14)
Shoe hold-down cup
(3)
Spring washer
(9)
Shoe guide plate
(15)
Shoe hold-down spring
(4)
Lever
(10)
Primary return spring
(16)
Shoe hold-down pin
(5)
Parking brake shoe (Primary)
(11)
Secondary return spring
(17)
Adjusting hole cover
(6)
Parking brake shoe (Secondary)
(12)
Adjusting spring
PB-00048
(16)
(10)
(13)
(11)
(9)
(6)
(2)
(1)
(17)
(3)
(4)
(7)
(8)
(14)
(15)
(12)
(5)
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