Oil DAEWOO MATIZ 2003 Service Owners Manual

MANUAL TRANSAXLE DRIVE AXLE 3B–7
DAEWOO M-150 BL2
D14B505B
5. Install the control arm ball joint bolt.
Tighten
Tighten the control arm ball joint bolt to 50–70 N
m
(36–52 lb-ft).
a. Control arm ball joint bolt
6. Install the tie rod into the knuckle and install the tie
rod end joint castellated nut.
Tighten
Tighten the tie rod end joint castellated nut to 30–55
N
m (21–41 lb-ft).
b. Tie rod end joint castellated nut.
D14B506A
33–53 N
m
40–50 N
m7. Install the stabilizer bar.Tighten
Tighten the stabilizer bar mounting bolts 33–53
N
m (24–39 lb-ft).
Tighten the stabilizer bar castellated nut to 40–50
N
m (30–36 lb-ft).
a. Stabilizer bar mounting bolt.
b. Stabilizer bar castellated nut.
D14B507A
8. Install the drive axle shaft nut.
Tighten
Tighten the drive axle shaft nut to 210 N
m (155 lb-ft)
Notice: Always use a new nut. Always peen the
caulking nut with a punch and a hammer until the nut
is locked into place on the wheel hub.
9. Install the wheels. Refer to Section 2E, Tires and
wheels.
D13BB520A
10. Refill the transaxle fluid to the proper level.
Tighten the drain plug to 25-30 N
m (18-22 lb-ft)
(a).
Remove the oil level plug (1).
Refill recommended fluid to the proper level.
Tighten the oil level plug to 36-54 N
m (26–40 lb-
ft) (b).
Classification 75W–85 (GL–4) Capacity2.1L (2.21 gt)

3B –12 MANUAL TRANSAXLE DRIVE AXLE
DAEWOO M-150 BL2
SPECIFICATIONS
GENERAL SPECIFICATIONS

Application

Description

Unit

Standard

Limit
Inner

–Tripot Joint

– Type
Outer

–Rzeppa Joint

–
Right

mm (in.)553.5(21.79)

– Length
Left

mm (in.)386.5(15.22)

– Drive AxleShaft Diameter

mm (in.)22 (0.87)

–


Inner

g (ounce)90 – 100
(3.2 – 3.5)

–


Grease Capacity
Outer

g (ounce)80 – 90
(2.8 – 3.2)
–
FASTENER TIGHTENING SPECIFICATIONS
Application N
m Lb-Ft Lb-In
Control Arm Ball Joint Bolt 50 – 70 36 – 52 –
Tie Rod End Joint castellated Nut 30 – 55 21 – 41 –
Stabilizer Bar Bolt 33 – 53 24 – 39 –
Stabilizer Bar Castellated Nut40 – 5030 – 36–
Drive Axle Shaft Nut 210 155 –
Wheel Nut 90 – 11 0 66 – 81 –
Transaxle Under Cover Bolt35 – 5525 – 41–
Oil Drain Plug25 – 3018 – 22–
Oil Level Plug36 – 5426 – 40–

4A –4 HYDRAULIC BRAKES
DAEWOO M-150 BL2
DIAGNOSITIC INFORMATION AND PROCEDURES
BRAKE SYSTEM TESTING
(Left–Hand Drive Shown, Right–Hand
Drive Similar)
Brakes should be tested on a dry, clean, reasonably
smooth and level roadway. A true test of brake perfor-
mance cannot be made if the roadway is wet, greasy, or
covered with loose dirt whereby all tires do not grip the
road equally. Testing will also be adversely affected if the
roadway is crowned so as to throw the weight so roughly
that the wheels tend to bounce.
Test the brakes at different vehicle speeds with both light
and heavy pedal pressure; however, avoid locking the
brakes and sliding the tires. Locked brakes and sliding
tires do not indicate brake efficiency since heavily
braked, but turning, wheels will stop the vehicle in less
distance than locked brakes. More tire-to-road friction is
present with a heavily braked, turning tire than with a
sliding tire.
Because of the high deceleration capability, a firmer
pedal may be felt at higher deceleration levels.
There are three major external conditions that affect
brake performance:

Tires having unequal contact and grip of the road will
cause unequal braking. Tires must be equally in-
flated, and the tread pattern of the right and the left
tires must be approximately equal.

Unequal loading of the vehicle can affect the brake
performance since the most heavily loaded wheels
require more braking power, and thus more braking
effort, than the others.

Misalignment of the wheels, particularly conditions of
excessive camber and caster, will cause the brakes
to pull to one side.
To check for brake fluid leaks, hold constant foot pres-
sure on the pedal with the engine running at idle and the
shift lever in NEUTRAL. If the pedal gradually falls away
with the constant pressure, the hydraulic system may be
leaking. Perform a visual check to confirm any sus-
pected leaks.
Check the master cylinder fluid level. While a slight drop
in the reservoir level results from normal lining wear, an
abnormally low level indicates a leak in the system. The
hydraulic system may be leaking either internally or ex-
ternally. Refer to the procedure below to check the mas-
ter cylinder. Also, the system may appear to pass this
test while still having a slight leak. If the fluid level is nor-
mal, check the vacuum booster pushrod length. If an in-
correct pushrod length is found, adjust or replace the
rod.Check the master cylinder using the following proce-
dure:

Check for a cracked master cylinder casting or brake
fluid leaking around the master cylinder. Leaks are in-
dicated only if there is at least one drop of fluid. A
damp condition is not abnormal.

Check for a binding pedal linkage and for an incorrect
pushrod length. If both of these parts are in satisfac-
tory condition, disassemble the master cylinder and
check for an elongated or swollen primary cylinder or
piston seals. If swollen seals are found, substandard
or contaminated brake fluid should be suspected. If
contaminated brake fluid is found, all the components
should be disassembled and cleaned, and all the rub-
ber components should be replaced. All of the pipes
must also be flushed.
Improper brake fluid, or mineral oil or water in the fluid,
may cause the brake fluid to boil or cause deterioration
of the rubber components. If the primary piston cups in
the master cylinder are swollen, then the rubber parts
have deteriorated. This deterioration may also be evi-
denced by swollen wheel cylinder piston seals on the
drum brake wheels.
If rubber deterioration is evident, disassemble all the hy-
draulic parts and wash the parts with alcohol. Dry these
parts with compressed air before reassembly to keep al-
cohol out of the system. Replace all the rubber parts in
the system, including the hoses. Also, when working on
the brake mechanisms, check for fluid on the linings. If
excessive fluid is found, replace the linings.
If the master cylinder piston seals are in satisfactory
condition, check for leaks or excessive heat conditions.
If these conditions are not found, drain the fluid, flush the
master cylinder with brake fluid, refill the master cylin-
der, and bleed the system. Refer to “Manual Bleeding
the Brakes” in this section.
BRAKE HOSE INSPECTION
The hydraulic brake hoses should be inspected at least
twice a year. The brake hose assembly should be
checked for road hazard damage, cracks, chafing of the
outer cover, and for leaks or blisters. Inspect the hoses
for proper routing and mounting. A brake hose that rubs
on a suspension component will wear and eventually
fail. A light and a mirror may be needed for an adequate
inspection. If any of the above conditions are observed
on the brake hose, adjust or replace the hose as neces-
sary.

4B –2 MASTER CYLINDER
DAEWOO M-150 BL2
DESCRIPTION AND OPERATION
MASTER CYLINDER
The master cylinder is designed for use in a direct–split
system. Front right brake and rear left brake are served
by the primary piston. Front left brake and rear right
brake are served by the secondary piston.
The master cylinder incorporates the functions of the
standard dual master cylinder, plus a low fluid level indi-
cator and the proportioning valve in the non–antilock
braking system.
The proportioning valves limit the outlet pressure to the
rear brakes after a predetermined master cylinder has
been reached.
Important:

Replace all the components included in the repair kits
used to service this master cylinder.

Lubricate rubber parts with clean brake fluid to ease
assembly.

Do not use lubricated shop air on brake parts, as this
may damage rubber components.

If any hydraulic component is removed or discon-
nected, it may be necessary to bleed all or part of the
brake system.
The torque values specified are for dry, unlubricated
fasteners.

Perform all service operations on a clean bench, free
from all traces of mineral oil.
PROPORTIONING VALVE
The proportioning valve limits the outlet pressure to the
rear brakes on the non-ABS after a predetermined mas-
ter cylinder pressure has been reached. This is used
when less rear apply force is needed to obtain optimum
braking and is usually found on disc/drum brake configu-
rations. On ABS-equipped vehicles, refer to Section 4F,
Antilock Brake System.
FLUID LEVEL SENSOR
Fluid level sensor is attached at the brake fluid reservoir.
This sensor will activate the BRAKE light if a low fluid
level condition is detected. Once the fluid level is cor-
rected, the BRAKE light will go out.

4D – 2 FRONT DISC BRAKES
DAEWOO M-150 BL2
DESCRIPTION AND OPERATION
DISC BRAKE CALIPER ASSEMBLY
This caliper has a single bore and is mounted to the
steering knuckle with two mounting bolts. Hydraulic
pressure, created by applying the brake pedal, is con-
verted by the caliper to a stopping force. This force acts
equally against the piston and the bottom of the caliper
bore to move the piston outward and to slide the caliper
inward, resulting in a clamping action on the rotor. This
clamping action forces the linings against the rotor,
creating friction to stop the vehicle.
D17B001A
Important:

Replace all components included in the repair kits
used to service this caliper.

Lubricate the rubber parts with clean brake fluid to
ease assembly.

Do not use lubricated shop air on brake parts, as
damage to the rubber components may result.

If any hydraulic component is removed or discon-
nected, it may be necessary to bleed all or part of the
brake system.

Replace the pads in axle sets only.

The torque values specified are for dry, unlubricated
fasteners.

Perform the service operations on a clean bench, free
from all mineral oil materials.
CLEARANCE CALIBRATION
When the hydraulic pressure is applied to the piston, the
piston moves leftward. The piston seal, which extent
considerable pressure against the piston, moves with
cylinder.
However, as a part of the piston seal is fixed into a grove
in the cylinder shape of the seal is as shown in below
figure, distorted toward the piston moving direction.
When the pressure is taken off from the brake pedal and
the hydraulic pressure is released from the piston, a re-
storing elastic force is generated at the seal and pushes
the piston rightward and back it in original position.
As the pads wear away and the clearance between rotor
and pads becomes larger, the piston moves larger.
The seal then could change in shape further, but since
end of the seal is fixed into the groove in the cylinder, the
distortion is limited to the same amount as previously
described.
The piston moves further to cover the distance of clear-
ance. As the piston returns by the same distance and
the rubber seal recovers its original shape, the clear-
ance between the rotor and pads is maintained in origi-
nal condition.
1. Piston
2. Piston Seal
3. Pads
a. Clearance
D107B002

4E – 2 REAR DRUM BRAKES
DAEWOO M-150 BL2
DESCRIPTION AND OPERATION
DRUM BRAKES
This drum brake assembly is a leading/trailing shoe de-
sign. Both brake shoes are held against the wheel cylin-
der pistons by the lower return spring and the fixed
anchor plate near the lower return spring. When the
brakes are applied, the wheel cylinder pistons move
both shoes out to contact the drum. With forward wheel
rotation, the forward brake shoe will wrap into the drum
and become self-energized. With reverse wheel rota-
tion, the rear brake shoe is self-energized. Force from
the brake shoes is transferred to the anchor plate
through the backing plate to the axle flange. Adjustment
is automatic and occurs on any service brake applica-
tion. Do not switch the position of shoes that have been
in service, as this may render the self-adjustment fea-
ture inoperative and result in increased pedal travel.Notice:

Replace all the components included in the repair kits
used to service this drum brake.

Do not use lubricated shop air on the brake parts, as
damage to the rubber components may result.

If any hydraulic component is removed or discon-
nected, it may be necessary to bleed all or part of the
braking system.

The torque values specified are for dry, unlubricated
fasteners.

Perform service operations on a clean bench that is
free from all mineral oil materials.

4E –4 REAR DRUM BRAKES
DAEWOO M-150 BL2
DIAGNOSTIC INFORMATION AND PROCEDURES
REAR DRUM BRAKE

Condition

Probable cause

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
DAEWOO M-150 BL2
DRUMS
Inspect the brake drum as follows ;
1. Inspect the drum for crack or damage.
2. Measure the inside diameter.
Unit : mm (in.)

Inside Diameter Wear Limit Value

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.)

Lining Wear Limit Value

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
DAEWOO M-150 BL2
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.

ANTILOCK BRAKE SYSTEM 4F–3
DAEWOO M-150 BL2
DESCRIPTION AND OPERATION
ABS SYSTEM COMPONENTS
The Antilock Braking System (ABS) consists of a con-
ventional hydraulic brake system plus antilock compo-
nents. The conventional brake system includes a
vacuum booster, master cylinder, front disc brakes, rear
drum brakes, interconnecting hydraulic brake pipes and
hoses, brake fluid level sensor and the BRAKE indicator.
The ABS components include a hydraulic unit, an elec-
tronic brake control module (EBCM), two system fuses,
four wheel speed sensors (one at each wheel), intercon-
necting wiring, the ABS indicator, and the rear drum
brake. See “ABS Component Locator” in this section for
the general layout of this system.
HYDRAULIC UNIT
The hydraulic unit with the attached EBCM is located
between the surge tank and the fire wall on the right side
of the vehicle. The basic hydraulic unit configuration
consists of return pump motor, return pump, four isola-
tion valves, four dump valves, two Low Pressure Accu-
mulators (LPA), two High Pressure Attenuators (HPA).
The hydraulic unit controls hydraulic pressure to the
front calipers and rear wheel cylinders by modulating hy-
draulic pressure to prevent wheel lockup.
Isolation valve
The isolation valve is placed in the brake fluid path from
the master cylinder to the relevant brake caliper and al-
lows free flow as commanded by the driver during nor-
mal braking and reapply phases.
In the isolation phase the coil moves the armature down,
which closes the normally open isolation orifice and pre-
vents any further increase of pressure in the brake. The
valve also remains closed during the dump phase.
The lip seal provides a one way return path for brake
fluid to flow through in:
1. Foot off pedal during isolation.
2. Residual LPA fluid.
D107E002
Dump Valve
The dump valve creates a flow path from the isolation
cartridge (brake side) to the low pressure accumulator
(LPA). The valve keeps this path permanently closed ex-
cept during the dump phase in the ABS mode. On ac-
tivation (dump phase), the coil moves up the armature
which opens the normally closed dump orifice and allow
to drain the pressure in the brake line with the brake fluid
flowing into the LPA.
The lip seal provides a return path for residual brake
fluid in the LPA.
D107E003
Low Pressure Accumulator (LPA)
LPA provides a variable chamber for brake fluid to be
quickly pushed in through the dump valve at the begin-
ning of a departure. This chamber then acts as a reser-
voir which buffers the pump.
D107E004
High Pressure Attenuator (HPA)
The HPA is in between the pump and the ISO valve
(master cylinder side) and uses the bulk mode of the
contained plastic damper and orifice size to dump out
the pressure oscillations from the pump to reduce the