Daewoo Matiz (2003 year). Manual - part 110

FRONT SUSPENSION  2C – 5

DIAGNOSTIC INFORMATION AND PROCEDURES

STRUT DAMPENER

A strut dampener is basically a shock absorber. However, strut dampeners are easier to extend and retract by hand
than are shock absorbers. Strut dampeners are used only on the front in most vehicles, including this vehicle. Shock
absorbers are used on the rear wheels.

ÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁ

Condition

ÁÁÁÁÁÁÁÁÁÁÁÁÁ

ÁÁÁÁÁÁÁÁÁÁÁÁÁ

Probable cause

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Correction

Struts Seem Weak

D

Improper tire pressures.

D

Adjust the tire pressures to the speci-
fications on the tire placard.

D

Abnormal load conditions.

D

Consult with the owner to confirm the
owner’s understanding of normal load
conditions.

D

Improper compression and rebound
effectiveness of the strut dampener.

D

Quickly push down and then lift up on
the corner of the bumper nearest the
strut dampener being tested.

D

Compare the compression and re-
bound with those of a similar vehicle
that has an acceptable ride quality.

D

Replace the strut dampener, if need-
ed.

Struts are Noisy

D

Loose or damaged mountings.

D

Tighten the strut dampener.

D

Replace the strut dampener if need-
ed.

D

Improper compression and rebound
effectiveness of the strut dampener.

D

Quickly push down and then lift up on
the corner of the bumper nearest the
strut dampener being tested.

D

Compare the compression and re-
bound with those of a similar vehicle
that has an acceptable ride quality.

D

Replace the strut dampener, if need-
ed.

Leaks

D

A slight trace of fluid.

D

The strut dampener is OK.

D

Leaks of the seal cover on the fully
extended strut.

D

Replace the strut dampener.

D

Excessive leaks of fluid on the strut
dampener.

D

Replace the strut dampener.

BALL JOINT AND KNUCKLE

Ball Joint Inspection

1. Raise the front of the vehicle to allow the front sus-

pension to hang free.

2. Grasp the tire at the top and the bottom.

3. Move the top of the tire in an in-and-out motion.

4. Look for any horizontal movement of the knuckle rela-

tive to the control arm.

5. Control arms assembly must be replaced if the follow-

ing conditions exist:

D

The joint is loose.

D

The ball seal is cut.

D

The ball stud is disconnected from the knuckle.

D

The ball stud is loose at the knuckle.

D

The ball stud can be twisted in its socket with finger
pressure.

Ball Stud Inspection

Make sure to check the tightness of the ball stud in the
knuckle boss during each inspection of the ball joint.
One way to inspect the ball stud for wear is to shake the
wheel and feel for movement of the stud end or the cas-
tellated nut at the knuckle boss.

Another way to inspect the ball stud for wear is to check
the fastener torque at the castellated nut. A loose nut can
indicate a stressed stud or a hole in the knuckle boss.

Worn or damaged ball joints and knuckles must be re-
placed.

2C – 6  FRONT SUSPENSION

FRONT WHEEL BEARING

Bearing Axial End Play Inspection

D107B303

1. Lift and suitably support the vehicle.

2. Inspect the end play of the bearing.

3. If excessive play is defeeted, free shoes from the disc

or remove the calipers.

4. Check the standard torque of the drive nut (spec. :

210 N

S

m (155 lb-ft)).

5. Check the bearing end play according to the following

method.

D

Place a dial guage against the disc surface, grasp
the disc.

D

Using a push–pull movement, note gage readings.

Specification

0.130mm

or less 

(0.005 in)

Standard tighting torque

of drive shaft nut : 

210 N

S

m (155 lb-ft)

6. If the axial end play of the front wheel bearing exceed

0.130mm torque the drive shaft nut successively
(Max. allowance : 240 N

S

m (177 lb-ft))

7. Check the axial end play again.

8. If the axial end play is above spec., replace the front

wheel bearing.

FRONT SUSPENSION  2C – 7

REPAIR INSTRUCTIONS

ON–VEHICLE SERVICE

D16B501A

STRUT ASSEMBLY

Removal Procedure

1. Open the hood.

2. Remove the top of the strut assembly at passenger

seat side.

D

For vehicle with power steering, remove the power
steering fluid reservoir (1).

D

Remove the nuts (2).

D16B502A

3. Remove the top of the strut assembly at driver side.

D

Remove the bolt and the fuse box (1, 2).

D

Remove the nuts (3).

D106B503

4. Remove the lower of the strut assembly.

D

Raise and suitably support the vehicle.

D

Remove the wheel. Refer to Section 2E, Tires and
Wheels.

D

Remove the ABS front speed sensor electrical wire
from the bracket, if applicable (1).

D

Disconnect the brake hose from the bracket (2).

D

Remove the strut bracket bolts (3).

5. Remove the strut bracket assembly from the vehicle.

2C – 8  FRONT SUSPENSION

D16B504A

70–90 N

S

m

Installation Procedure

1. Install the strut assembly to the vehicle with the strut

assembly–to–strut bracket bolts.

Tighten

Tighten the strut assembly–to–strut bracket bolts to
70–90 N

S

m (52–66 lb-ft).

2. Connect the brake hose to the bracket.

3. Install the ABS front speed sensor electrical wire to

the bracket, if applicable.

D16B505A

18–28 N

S

m

18–28 N

S

m

4. Install the wheel. Refer to Section 2E, Tires and

Wheels.

5. Lower the vehicle.
6. Install the nuts.

D

Install the nuts at passenger side (1).

Tighten

Tighten the nuts to 18–28 N

S

m (13–21 lb-ft).

D

Install the nuts at driver side (2).

Tighten

Tighten the nuts to 18–28 N

S

m (13–21 lb-ft).

7. Install the power steering fluid reservoir.
8. Install the fuse box and bolt.

D106B506

KNUCKLE ASSEMBLY

Tools Required

KM 507–B Ball Joint Remover

Removal Procedure

1. Remove the caulking nut.

D

Straighten the bent flange caulking nut (1).

D

Remove the caulking nut (2).

D

Remove the washer (3).

2. Remove the wheel. Refer to Section 2E, Tires and

Wheels.

D105B501

3. Separate the tie rod end from the knuckle assembly.

D

Remove the cotter pin (1).

D

Remove the castellated nut (2).

D

Install the ball joint remover KM 507–B.

D

Separate the tie rod end from the knuckle assem-
bly using a ball joint remover KM 507–B (3).