1996 SUBARU LEGACY brake

3. CONDITIONS FOR COMPLETION OF ABS
SEQUENCE CONTROL
When the following conditions develop, the ABS sequence
control stops and ABS operation is returned to the normal
control mode.
1) When the speed of at least one wheel reaches 10 km/h
(6 MPH).
2) When terminal No. 3 or No. 6 are separated from diag-
nosis terminals. (When select monitor is not used.)
3) When the brake pedal is released during sequence con-
trol and the braking lamp switch is set to off.
4) When brake pedal is depressed after ignition key is
turned to ON, and before ABS warning light goes out.
(When select monitor is not used.)
5) When brake pedal is not depressed after ignition key is
turned to ON, and within 0.5 seconds after ABS warning
light goes out. (When select monitor is not used.)
6) After completion of the sequence control.
7) When malfunction is detected. (When select monitor is
used.)
11 6
4-4SERVICE PROCEDURE
22. Hydraulic Unit for ABS System (ABS 5.3 Type)

B4M0996
E: INSTALLATION
1. HYDRAULIC UNIT
1) Install hydraulic unit.
Tightening torque:
18±5 N⋅m (1.8±0.5 kg-m, 13.0±3.6 ft-lb)
2) Connect hydraulic unit ground cable to body.
Tightening torque:
32±10 N⋅m (3.3±1.0 kg-m, 24±7 ft-lb)
3) Connect brake pipes to their correct hydraulic unit con-
nections.
B4M1031A
4) Secure hydraulic unit connector to connector bracket.
CAUTION:
Align connector with mating receptacle.
5) Using cable clip, secure hydraulic unit harness to relay
box harness.
CAUTION:
Make sure hydraulic unit harness band is secured
beneath cable clip.
6) Connect connector to hydraulic unit.
7) Install canister.
8) Install air intake duct.
9) Connect ground cable to battery.
10) Bleed air from the brake system.
B4M1029
2. RELAY BOX
1) Install relay box and connector bracket.
Tightening torque:
18±5 N⋅m (1.8±0.5 kg-m, 13.0±3.6 ft-lb)
11 8
4-4SERVICE PROCEDURE
22. Hydraulic Unit for ABS System (ABS 5.3 Type)

1. Entire Brake System
Trouble and possible cause Corrective action
1. Insufficient braking
(1) Fluid leakage from the hydraulic mechanismRepair or replace (cup, piston seal, piston boot, master cylinder
piston kit, pipe or hose).
(2) Entry of air into the hydraulic mechanism Bleed the air.
(3) Excessively wide shoe clearance Adjust the clearance.
(4) Wear, deteriorated surface material, adhering water or fluid
on the liningReplace, grind or clean.
(5) Improper operation of master cylinder, disc caliper, brake
booster or check valveCorrect or replace.
2. Unstable or uneven braking
(1) Fluid on the lining, drum or rotor Eliminate cause of fluid leakage, clean, or replace.
(2) Drum or rotor eccentricity Correct or replace the drum or rotor.
(3) Worn brake drum, or damage to the drum caused by sand Correct by grinding, or replace.
(4) Improper lining contact, deteriorated surface material,
improper inferior material, or wearCorrect by grinding, or replace.
(5) Deformed back plate Correct or replace.
(6) Improper tire inflation Inflate to correct pressure.
(7) Disordered wheel alignment Adjust alignment.
(8) Loosened back plate or the support installing bolts Retighten.
(9) Loosened wheel bearing Retighten to normal tightening torque or replace.
(10) Trouble in the hydraulic system Replace the cylinder, brake pipe or hose.
(11) Uneven effect 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 the air.
(2) Excessive play in the master cylinder push rod Adjust.
(3) Fluid leakage from the hydraulic mechanismRepair or replace (cup, piston seal, piston boot, master cylinder
piston kit, pipe or hose).
(4) Improperly adjusted shoe clearance Adjust.
(5) Improper lining contact or worn lining Correct or replace.
124
4-4DIAGNOSTICS
1. Entire Brake System

Trouble and possible cause Corrective action
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 Correct or adjust.
(5) Weakened spring tension or breakage of shoe return spring Replace the spring.
(6) Excessively narrow shoe clearance Adjust the clearance.
(7) Improper disc caliper operation Correct or replace.
(8) Improper adjusted wheel bearing Adjust or replace.
5. Brake noise (1) (creak sound)
(1) Hardened or deteriorated lining Replace the shoe assembly or pad.
(2) Worn lining Replace the shoe assembly or pad.
(3) Loosened back plate or the support installing bolts Retighten.
(4) Loose wheel bearing Retighten to normal tightening torque.
(5) Dirty drum or rotor Clean the drum or rotor, or clean and replace the brake assembly.
6. Brake noise (2) (hissing sound)
(1) Worn lining Replace the shoe assembly or pad.
(2) Improper installed shoe or pad Correct or replace the shoe assembly or pad.
(3) Loose or bent drum or rotor Retighten or replace.
7. Brake noise (3) (click sound)
In the case of the disc brake:
(1) Excessively worn pad or the support Replace the pad or the support.
In the case of the drum brake:
(1) Excessively worn shoe ridge Replace the back plate.
(2) Lack of oil on the shoe ridge surface and anchor Add more grease.
125
4-4DIAGNOSTICS
1. Entire Brake System

2. Hill Holder
Trouble and possible cause Corrective action
1. Counterforce of clutch pedal is too strong.
(1) PHV cable is damaged or does not operate properly. Repair or replace.
(2) Lever of PHV is defective. Replace entire PHV assembly.
(3) Clutch system is anomalous. Refer to“Clutch and pedal cable system”.
2. Vehicle does not stop on uphill road of 3°or higher inclination.
(1) Front side of vehicle is lowered. Refer to“Suspension”.
(2) PHV cable is broken. Replace.
(3) Play of clutch is excessive. Adjust.
(4) PHV cable is elongated. Adjust.
(5) Sealing of PHV is poor. Replace entire PHV assembly.
3. Shock is felt when starting.
(1) Poor adjustment of starting performance: Adjust.
(2) When depressing the brake pedal strongly:(The stronger brake pedal depressing force, the later hill holder
releases.)
(3) When starting on flat road after stopping reverse movement: (Because hill holder is activated.)
4. Vehicle slips down when starting.
(1) PHV cable is elongated. Adjust.
(2) Clutch facing is worn out. Adjust or replace.
(3) Bracket (cable) or stay (PHV) is deformed. Repair or replace.
5. Vehicle cannot start after stoppage.
(1) Return spring is fatigued or broken. Replace.
(2) PHV lever won’t return. Replace entire PHV assembly.
(3) When intentionally depressing brake pedal strongly:[When the brake pedal is depressed by a force of 1,177 N (120
kg, 265 lb) or more.]
6. Abnormal sound is generated upon releasing brake pedal when stopping.
(1) Rotor and pad matched with each other due to inadequate
depressing force to brake pedal.(Abnormal sound is not generated when depressing brake pedal a
little stronger.)
7. Abnormal sound is generated when operating clutch pedal.
(1) Grease is inadequate for the hook of return spring and slid-
ing portion of PHV cable end.Apply grease.
(2) When releasing after maintaining high fluid pressure: (Flowing sound of fluid when releasing high fluid pressure.)
(3) Clutch system is anomalous. Refer to“Clutch and pedal cable system”.
CAUTION:

Description in parentheses is a characteristic of hill holder and does not indicate abnormality.
Depressing force required for clutch pedal equipped to hill holder specifications is 20 to 29 N (2 to 3 kg, 4 to 7 lb) larger than
the conventional specifications, which does not constitute abnormality.

When vehicle cannot travel (brake cannot be released) because return spring is broken, remove adjusting nut, disconnect
clutch and PHV, and then return PHV lever to release the brake. (Be sure to apply the parking brake before starting this opera-
tion.)

The hill holder may not be activated on a slope of an extremely small inclination.
126
4-4DIAGNOSTICS
2. Hill Holder

1. Pedal System
A: SERVICE DATA
Brake pedal Free play1—3mm(0.04 — 0.12 in)
[Depress brake pedal pad with a force of less than
10 N (1 kg, 2 lb).]
Clutch pedalFree play At clutch pedal pad 10 — 20 mm (0.39 — 0.79 in)
Full stroke At clutch pedal pad 140 — 145 mm (5.51 — 5.71 in)
Accelerator pedalFree play At pedal pad1—4mm(0.04 — 0.16 in)
Stroke At pedal pad 50 — 55 mm (1.97 — 2.17 in)
2
4-5SPECIFICATIONS AND SERVICE DATA
1. Pedal System

1. Pedal (MT Model)
B4M0737A

1Accelerator pedal


2Bushing


3Holder


4Accelerator bracket


5Stopper


6Clip


7Accelerator spring


8Accelerator pedal spring


9Spring pin


10Accelerator pedal pad


11Accelerator stopper


12Clip


13Accelerator plate

14Pedal bracket


15Stop light switch (Without T.C.S.) /
stroke sensor (With T.C.S.)


16Brake pedal


17Spacer


18Snap pin


19Brake pedal pad


20Clevis pin


21Brake pedal spring


22Washer


23Clutch pedal pad


24Clutch pedal


25Bushing assist

26Spring assist


27Clutch cable clamp


28Clutch cable


29Mass damper


30Clutch switch (Starter interlock)


31Clutch switch (With cruise control)
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 5.9±1.5 (0.60±0.15, 4.3±1.1)
T2: 8±2 (0.8±0.2, 5.8±1.4)
T3: 18±5 (1.8±0.5, 13.0±3.6)
T4: 29±7 (3.0±0.7, 21.7±5.1)
3
4-5COMPONENT PARTS
1. Pedal (MT Model)

2. Pedal (AT Model)
1. LHD MODEL
B4M0738A

1Accelerator pedal


2Bushing


3Holder


4Accelerator bracket


5Stopper


6Clip


7Accelerator spring


8Accelerator pedal spring


9Spring pin


10Accelerator pedal pad

11Accelerator stopper


12Clip


13Accelerator plate


14Plug


15Pedal bracket


16Stop light switch (Without T.C.S.) /
stroke sensor (With T.C.S.)


17Spacer


18Stopper


19Snap pin

20Brake pedal pad


21Brake pedal


22Clevis pin


23Brake pedal spring
Tightening torque: N⋅m (kg-m, ft-lb)
T1: 8±2 (0.8±0.2, 5.8±1.4)
T2: 18±5 (1.8±0.5, 13.0±3.6)
T3: 29±7 (3.0±0.7, 21.7±5.1)
4
4-5COMPONENT PARTS
2. Pedal (AT Model)