2003 DAEWOO MATIZ weight

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.

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.

7B–14 MANUAL CONTROL HEATING, VENTILATION, AND AIR CONDITIONING SYSTEM
DAEWOO M-150 BL2
MAINTAINING CHEMICAL STABILITY
IN THE REFRIGERATION SYSTEM
The efficient operation and life of the air conditioning
system is dependent upon the chemical stability of the
refrigeration system. When foreign materials, such as
dirt, air, or moisture, contaminate the refrigeration sys-
tem, they will change the stability of the refrigerant and
the PAG compressor oil. They will also affect the pres-
sure-temperature relationship, reduce efficient opera-
tion, and can possibly cause interior corrosion and
abnormal wear of moving parts.
Observe the following practices to ensure chemical sta-
bility in the system:
Wipe away dirt or oil at and near any connection be-
fore opening that connection. This will reduce the
chance of dirt entering the system.
Cap, plug, or tape both sides of a connection as soon
as possible after opening the connection. This will
prevent the entry of dirt, foreign material, and mois-
ture.
Keep all tools clean and dry, including the manifold
gauge set and all replacement parts.
Use a clean and dry transfer device and container to
add PAG refrigerant oil. This will ensure that the oil
remains as moisture-free as possible. Refer to “Dis-
charging, Adding Oil, Evacuating and Charging Pro-
cedures for A/C System” in this section.
Have everything you need ready to allow you to per-
form all operations quickly when opening an A/C sys-
tem. Do not leave the A/C system open any longer
than necessary.
Evacuate and recharge any A/C system that has
been opened. Refer to “Discharging, Adding Oil, Eva-
cuating and Charging Procedures for A/C System” in
this section for the instructions to perform this proce-
dure properly.
All service parts are dehydrated and sealed before ship-
ping. They should remain sealed until just before making
connections. All the parts should be at room tempera-
ture before uncapping. This prevents condensation of
moisture from the air from entering the system. Reseal
all parts as soon as possible if the caps have been re-
moved but the connections cannot be made promptly.
DISCHARGING, ADDING OIL,
EVACUATING, AND CHARGING
PROCEDURES FOR A/C SYSTEMS
Caution: Use only refillable refrigerant tanks that
are authorized for the charging station being used.
The use of other tanks may cause personal injury or
void the warranty. Refer to the manufacturer’s in-
structions for the charging station.Caution: To avoid personal injury, always wear
goggles and gloves when performing work that in-
volves opening the refrigeration system.
A charging station discharges, evacuates, and re-
charges an air conditioning system with one hook-up.
Filtering during the recovery cycle together with filtering
during the evacuation cycle ensures a supply of clean,
dry refrigerant for A/C system charging.
Notice:
Never use the R-134a charging station on a system
charged with R-12. The refrigerants and the oils are
not compatible and must never be mixed in even the
smallest amount. Mixing refrigerant residue will dam-
age the equipment.
Never use adapters which convert from one size fit-
ting to another. This will allow contamination which
may cause system failure.
Charging Station Setup and Maintenance
Refer to the manufacturer’s instructions for all initial set-
up procedures and all maintenance procedures. There
are many charging stations available. All perform the
various tasks required to discharge the system and re-
cover refrigerant, evacuate the system, add a measured
amount of oil, and recharge an air conditioning system
with a measured amount of refrigerant.
Control Panel Functions
A charging station will have controls and indicators to al-
low the operator to control and monitor the operation in
progress. Refer to the manufacturer’s instructions for
details. These can be expected to include:
1. Main Power Switch: The main power switch supplies
electrical power to the control panel.
2. Display: The display shows the time programmed for
vacuum and the weight of the refrigerant pro-
grammed for recharging. Refer to the manufacturer’s
instructions for detailed programming information.
3. Low Side Manifold Gauge: This gauge shows the
system’s low side pressure.
4. High Side Manifold Gauge: This gauge shows the
system’s high side pressure.
5. Controls: This will contain the controls that control
various operating functions.
6. Low Side Valve: This valve connects the low side of
the A/C system to the unit.
7. Moisture Indicator: This indicator shows if the refrig-
erant is wet or dry.
8. High Side Valve: This valve connects the high side of
the A/C system to the unit.