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Daewoo Matiz (2003 year). Manual - part 136

4E – 4 REAR DRUM BRAKES

DIAGNOSTIC INFORMATION AND PROCEDURES

REAR DRUM BRAKE

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Condition

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Probable cause

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Correction

Not Enough Braking

Badly worn brake shoe lining.

Replace the lining.

Force

Lining stained with oil.

Check the wheel cylinder leaks and
then replace the wheel cylinder or the
lining, if needed.

Wheel cylinder condition faulty.

Replace the wheel cylinder.

Malfunctioning self–adjustment
feature.

Repair the self–adjustment feature.

Uneven Braking

Lining stained with oil.

Check the wheel cylinder leaks and
then replace the wheel cylinder or the
lining, if needed.

Wheel cylinder condition faulty.

Replace the wheel cylinder.

Malfunctioning self–adjustment
feature.

Repair the self–adjustment feature.

Dragging Brakes After
Pedal is Released

Weakened brake shoe return spring.

Replace the brake shoe return
spring.

Wheel cylinder condition faulty.

Replace the wheel cylinder.

Excessive Pedal Travel

Excessively worn lining.

Replace the lining.

Malfunctioning self–adjustment
feature.

Repair the self–adjustment feature.

Braking Noise or

Foreign material stuck to drum.

Clean the rear drum brake.

Vibration

Loosen brake plate bolt.

Tighten the brake plate bolt.

Damaged drum.

Replace the drum.

Poor Braking Force of
Parking Brake

Lining stained with oil.

Check the wheel cylinder leaks and
then replace the wheel cylinder or the
lining, if needed.

Damaged self–adjustment feature.

Repair the self–adjustment feature.

Poor adjustment of parking brake
cable.

Adjust the parking brake cable.

REAR DRUM BRAKES 4E – 5

DRUMS

Inspect the brake drum as follows ;

1. Inspect the drum for crack or damage.

2. Measure the inside diameter.

Unit : mm (in.)

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Inside Diameter Wear Limit Value

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182 (7.165)

D107C301

3. If the measured value is over the limit value, or if the

defect is found, replace the drum.

LINING

Inspect the brake drum as follows ;

1. Inspect the lining for wear or stain with oil.

2. Measure the thickness.

Unit : mm (in.)

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Lining Wear Limit Value

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1 (0.039)

D107C302

3. If the measured value is within the limit value, or if the

defect is found, replace the lining.

4E – 6 REAR DRUM BRAKES

REPAIR INSTRUCTIONS

ON–VEHICLE SERVICE

D107C501

D17C502A

REAR BRAKE DRUM

Removal Procedure

1. Remove the rear wheels. Refer to Section 6E, Tires

and Wheels.

2. Release the parking brake.

3. Remove the brake drum.

Remove the spindle cap (1).

Remove the cotter pin and do not reuse it (2).

Remove the castellated nut (3).

Remove the rear axle washer (4).

Remove the bearing, race and oil seal. Refer to
Section 2D, Rear Suspension.

Remove the hub bolts using a hammer (5).

Important: Do not reuse removed hub bolts.

D107C503

Installation Procedure

1. Install the brake drum.

Insert the new hub bolts using a hammer.

Install the bearing, race, oil seal and rear axle
washer.

REAR DRUM BRAKES 4E – 7

D17C504A

Tighten the castellated nut to 25 N

m (18 lb-ft).

Loosen the castellated nut to 180

Retighten the castellated nut to 2.5 N

m (22 lb-in).

Install the new cotter pin and spindle cap.

2. Adjust the parking brake.

3. Install the rear wheels. Refer to Section 6E, Tires and

Wheels.

D107C505

BRAKE SHOE

Removal Procedure

1. Remove the brake drum. Refer to “Brake Drum” in

this section.

2. Remove the return spring.

Remove the upper return spring (1).

Remove the upper return spring bracket (2).

Remove the lower return spring (3).

D107C506

Remove the adjust lever (4).

Remove the middle return spring (5).

D107C507

3. Remove the brake shoe.

Remove the readjusting unit (1).

Turn the brake shoe retaining spring pin rectangu-
larly by the pliers (2).

Remove the brake shoe retain spring cap (3).

Remove the retaining spring (4).

Remove the retaining spring pin (5).

Remove the leading shoe (6).

Content .. 134 135 136 137 ..