32 - Braking.pdf

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32–1
BRAKE
–
BRAKE SYSTEM
BRAKE SYSTEM
PRECAUTION
320I7–01
Care must be taken to replace each part properly, because it could affect the performance of
the brake system and result in a driving hazard. Replace the parts with the parts which have
the same part number or equivalent.
It is very important to keep parts and the area clean when repairing the brake system.
If the vehicle is equipped with a mobile communication system, refer to the precaution in the
introduction section.
2004 COROLLA (RM1037U)
Author:
Date:
1292
32–2
BRAKE
–
BRAKE SYSTEM
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the probability of the
cause of the problem. Check each part in order. If necessary, replace these parts.
320I8–02
Symptom
Suspect Area
See page
3. Fluid leaks for brake system
4. Air in brake system
5. Piston seals (Worn or damaged)
–
32–4
32–25
32–31
32–31
32–13
32–13
Low pedal or spongy pedal
6. Rear brake shoe clearance (Out of adjustment)
7. Master cylinder (faulty)
8. Booster push rod (Out of adjustment)
1. Brake pedal free play (Minimal)
2. Parking brake lever travel (Out of adjustment)
3. Parking brake wire (Sticking)
32–6
33–2
33–7
33–10
32–31
32–25
32–31
32–25
32–31
32–25
32–31
32–31
32–13
32–18
32–13
4. Rear brake shoe clearance (Out of adjustment)
5. Pad or lining (Cracked or distorted)
Brake drag
6. Piston (Stuck)
7. Piston (Frozen)
8. Tension or return spring (Faulty)
9. Booster push rod (Out of adjustment)
10.Vacuum leaks for booster system
11.Master cylinder (Faulty)
1. Piston (Stuck)
32–25
32–31
32–25
32–31
32–25
32–31
32–25
32–25
32–31
2. Pad or lining (Oily)
Brake pull
3. Piston (Frozen)
4. Disc (Scored)
5. Pad or lining (Cracked or distorted)
2004 COROLLA (RM1037U)
Author:
Date:
1293
256353664.002.png
32–3
BRAKE
–
BRAKE SYSTEM
1. Fluid leaks for brake system
2. Air in brake system
3. Pad or lining (Worn)
–
32–4
32–25
32–31
32–25
32–31
32–31
32–25
32–31
32–25
32–31
32–25
32–13
32–18
4. Pad or lining (Cracked or distorted)
Hard pedal but brake inefficient
5. Rear brake shoe clearance (Out of adjustment)
6. Pad or lining (Oily)
7. Pad or lining (Glazed)
8. Disc (Scored)
9. Booster push rod (Out of adjustment)
10.Vacuum leaks for booster system
1. Pad or lining (Cracked or distorted)
32–25
32–31
32–25
32–25
32–25
32–25
32–25
32–31
32–25
32–31
32–31
32–25
32–31
Noise from brakes
2. Installation bolt (Loose)
3. Disc (Scored)
4. Pad support plate (Loose)
5. Sliding pin (Worn)
6. Pad or lining (dirty)
7. Pad or lining (Glazed)
8. Anchor, return or tension spring (Faulty)
9. Anti–squeal shim (Damaged)
10.Shoe hold–down spring (Damaged)
2004 COROLLA (RM1037U)
Author:
Date:
1294
256353664.003.png
32–4
BRAKE
–
BRAKE FLUID
BRAKE FLUID
BLEEDING
NOTICE:
Wash the brake fluid off immediately if it comes into contact with any painted surface.
HINT:
If any work is done on the brake system or if air in the brake lines is suspected, bleed the air from the system.
320I9–01
1.
FILL RESERVOIR WITH BRAKE FLUID
Fluid: SAE J1703 or FMVSS No. 116 DOT3
C80823
2.
BLEED MASTER CYLINDER
HINT:
If the master cylinder has been disassembled or if the reservoir
becomes empty, bleed the air from the master cylinder.
(a) Disconnect the brake lines from the master cylinder.
SST 09023–00100
(b) Slowly depress the brake pedal and hold it.
C80824
(c) Block off the outer holes with your fingers, and release the
brake pedal.
(d) Repeat (b) and (c) 3 or 4 times.
F42863
3. BLEED BRAKE LINE
(a) Connect the vinyl tube to the brake caliper.
(b) Depress the brake pedal several times, then loosen the
bleeder plug with the pedal held down.
(c) At the point when fluid stops coming out, tighten the
bleeder plug, then release the brake pedal.
Torque: 8.3 N
m (85 kgf
V
cm, 74 in.
V
C80826
2004 COROLLA (RM1037U)
Author:
Date:
1295
lbf)
(d) Repeat (b) and (c) until all the air in the fluid has been bled
out.
V
256353664.004.png 256353664.005.png
32–5
BRAKE
–
BRAKE FLUID
(e) Repeat the above procedures to bleed the air out of the
brake line for each wheel.
4. CHECK FLUID LEVEL IN RESERVOIR
(a) Check the fluid level and add fluid if necessary.
Fluid: SAE J1703 or FMVSS No. 116 DOT3
C80823
2004 COROLLA (RM1037U)
Author:
Date:
1296
256353664.001.png

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