2003 DAEWOO MATIZ torque

2E –4 TIRES AND WHEELS
DAEWOO M-150 BL2
WHEELS
Wheels must be replaced if they are bent, dented, have
excessive lateral or radial runout, leak air through welds,
have elongated bolt holes, or if the wheel bolts won’t
stay tight or are heavily rusted. Wheels with excessive
runout may cause vehicle vibration. Replacement
wheels must be equivalent to the original equipment
wheels in load capacity, diameter, rim width, offset, and
mounting configuration. A wheel of improper size or type
may affect wheel and bearing life, brake cooling,
speedometer/odometer calibration, vehicle ground
clearance, and tire clearance to the body and the chas-
sis.
INFLATION OF TIRES
The pressure recommended for any vehicle line is care-
fully calculated to give a satisfactory ride, handling,
tread life, and load-carrying capacity.
Tire pressure should be checked monthly or before any
extended trip. Check the tires when they are cold, after
the vehicle has sat for 3 hours or more or has been driv-
en less than 1 mile. Set the tire pressure to the specifi-
cations on the tire label located on the rear face of the
driver’s door. Tire inflation pressure is also given under
“Tire Size and Pressure Specifications” in this section.
Valve caps or extensions should be on the valves to
keep dust and water out.
Higher than recommended tire pressure can cause:

Hard ride

Tire bruising or damage

Rapid tread wear at the center of the tire
Lower than recommended pressure can cause:

Tire squeal on turns

Hard steering

Rapid and uneven wear on the edges of the tread

Tire rim bruises and rupture

Tire cord breakage

High tire temperatures
Unequal tire pressures on same axle can cause:

Uneven braking

Steering lead
Reduced handling

Swerve on acceleration

Torque steer
ROTATION TIRES
Front and rear tires perform different jobs and can wear
differently depending on the tires of road driven, driving
habit, etc.
The front tires will wear faster than the rear ones.
To avoid uneven wear of tires and to prolong tire life, in-
spect and rotate the tires every 5,000 km (3,100 miles).
After rotating the tires, adjust the tire inflation pressures
and be sure to check wheel nuts tightness.
D16A304A
WHEEL BALANCE
Balance is the easiest procedure to perform and should
be done first if the vibration occurs at high speeds, or if
the tires or the wheels are replaced.
When proceeding the wheel balancing procedure regard
the belows.
1. Do not use the wheel weight over two at the inboard
and the outboard flanges.
2. The total weight of the wheel weights should not ex-
ceed the 100 grams (3.5 ounces).
3. Blanching the assemblies with factory aluminum
wheels requires the use of special nylon–coated,
clip–on wheel weights.

2E –8 TIRES AND WHEELS
DAEWOO M-150 BL2
D16A503A
90–11 0 Nm
Installation Procedure
Notice: Before installing the wheels, remove any build-
up of corrosion on the wheel mounting surface and the
brake drum or the rotor mounting surface by scraping
and brushing them with a wire brush. Installing the
wheels without good metal-to-metal contact at the
mounting surfaces can cause the wheel nuts to loosen,
which can later allow a wheel to come off while the ve-
hicle is moving. Wheel nuts must be tightened in se-
quence and to the proper torque to avoid bending the
wheel, the brake drum or the rotor.
1. Mount the wheel.
2. Install the wheel nuts in the diagonally. Do not tighten
the wheel nuts.
3. Lower the vehicle.
Tighten
Tighten the wheel nuts to 90–110 Nm (66–81 lb-ft).
ON-VEHICLE BALANCING
On-vehicle balancing will help correct vibrations due to
brake drum, rotor, and wheel cover imbalances.
Notice: Do not allow the front suspension to hang free.
When the drive axle is run at an extreme angle, extra
vibrations can occur, as well as damage to seals and
joints.
1. During on-vehicle balancing, do not remove the bal-
ance weights from the off-vehicle dynamic balance.
2. If more than 1 ounce of additional weight is required,
split the weight between the inner and the outer rim
flanges.
3. Spin the driven tire and wheel assemblies using the
engine.
OFF-VEHICLE BALANCING
Perform wheel balancing with an electronic off-vehicle
balancer. The balancer is easy to use and gives both a
static and a dynamic balance. Unlike on-vehicle balanc-
ing, the off-vehicle balancer does not correct for drum or
rotor imbalance. This drawback is overcome by its accu-
racy. Secure the wheel on the balancer with a cone
through the back side of the centerhole, not through the
wheel nut holes.
CORRECTING NON-UNIFORM TIRES
There are two ways to correct properly balanced tires
which still vibrate. One method uses an automatic
machine which loads the tire and buffs small amounts of
rubber from high spots on the outer two tread rows.
Correction by this method is usually permanent and, if it
is done properly, does not significantly affect the
appearance or the tread life of the tire. Tire truing with a
blade-type machine is not recommended because it
substantially reduces the tread life and often does not
correct the problem permanently.

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.

5B – 2 FIVE-SPEED MANUAL TRANSAXLE
DAEWOO M-150 BL2
DESCRIPTION AND OPERATION
FIVE-SPEED MANUAL TRANSAXLE
This five-speed transaxle assembly adopts the synchro-
nized mesh type of 5 forward speed. The reverse speed
gear is driven by sliding idle gear without synchronizer.
REVERSE GEAR MISSHIFT
PREVENTING MECHANISM
It prevents the gear from directly being shifted from 5th
to reverse when shifting to reverse from 5th. Shift to the
reverse in neutral position to prevent the shift cam from
being interfered to the shift guide bolt.
D103B001
In case of shifting to 5th gear, shift and select shaft ro-
tates to right that shift cam aparts from guide bolt and
moves upwards by returning spring. Therefore, shifting
to reverse in this condition is impossible because of in-
terference of guide bolt.
D103B002
When shifting to reverse from neutral position between
5th and reverse, shift cam rotates to left and shifting is
possible.
D103B003
DIFFERENTIAL
Differential is integrated with transmission case and
installed on chassis together with engine. It changes the
direction of power and increase torque by reducing
speed.
Reduction gear is installed parallel to counter shaft and
is helical gear type. Differential gear is bevel gear type
and is integrated with reduction gear.

POWER STEERING GEAR 6C–5
DAEWOO M-150 BL2
ADJUST THE FREE LOAD OF THE
STEERING GEAR
1. Place the steering wheel in the straight-ahead posi-
tion.
2. Raise and suitably support the vehicle.
3. Remove the adjust plug locknut.
4. Check the torque of the adjuster plug.
5. Check the torque is below the specification value or
the measured torque is over the specification value,
adjust the tightening torque.

Place the rack gear in the straight-ahead position.

Tighten the adjust plug to 10 Nm (89 lb-in).

Turn the steering wheel all the way to the right and
the left about 5 times repeatedly.

Place the rack gear in the straight-ahead position.

Loosen the adjust plug.
D105C302

Tighten the adjust plug to 4.5–5.5 Nm (40–49 lb-
in).

Loosen the adjust plug to 67.5.
6. Tighten the adjust plug locknut.

6D –6 MANUAL STEERING GEAR
DAEWOO M-150 BL2
STEERING WHEEL RESTORATION
1. Turn the steering wheel fast to the right and left and
turn it slowly as the same way.
2. Check if the steering wheel restoration for the wheel
turning to right and the one to the left are same.
3. Turn the steering wheel to 90 about 1–2 seconds
and loosen the steering wheel during the low speed
driving.
4. If the steering wheel restores above 70%, the steer-
ing wheel restoration is OK.
5. If the restoration is poor, check the tire pressure,
steering gear preload, and steering gear operation.
And repair the fault.
CHECK THE TURNING RESISTANCE
OF THE TIE ROD END OR TIE ROD
1. Turn the ball joint of the tie rod end or the tie rod about
10 times.
2. Use a spring balance to check the turning resistance
of each ball joint.
D105B302
Application Specified Value
Tie Rod End Ball Joint0.49 – 3.43 Nm
(4.5 – 30 lb-in.)

Tie Rod Ball Joint0.49 – 3.43 Nm
(4.5 – 30 lb-in.)
3. If the values exceed the specified values, replace the
tie rod end or the tie rod.
4. But, If the ball joint of the tie rod end or the tie rod falls
down of itself, replace it.
ADJUST THE FREE LOAD OF THE
STEERING GEAR
1. Place the steering wheel in the straight–ahead posi-
tion.
2. Raise and suitably support the vehicle.
3. Check the torque of the adjuster plug.
4 When the measured torque is below the specification
value or the measured torque is over the specification
value, adjust the tightening torque.

Place the rack gear in the straight–ahead position.

Tighten the adjust plug to 95 Nm (70 lb-ft).

Turn the steering wheel all the way to the right and
the left about 5 times repeatedly.

Place the rack gear in the straight–ahead position.

Loosen the adjust plug.

Tighten the adjust plug to 8 Nm (71 lb-in.).

Set the torque in the 0.8–1.3 Nm (8–12 lb-in.) by
loosening the adjust plug to 0 − 90.
D105B303