ECU DAEWOO NUBIRA 2004 Service Repair Manual

REAR SUSPENSION 2D – 9
DAEWOO V–121 BL4
9. Install the trunk carpeting over the rear strut mount-
ing nuts. For station wagons, remove the panels
that cover the luggage compartment wheelhouse
trim panel (wagon). Refer to Section 9G, Interior
Trim.
KNUCKLE ASSEMBLY
Removal Procedure
1. Raise and suitably support the vehicle.
2. Remove the wheel. Refer to Section 2E, Tires and
Wheels.
3. On vehicles equipped with the antilock braking sys-
tem, remove the ABS speed sensor. Refer to Sec-
tion 4F, Antilock Brake System.
4. On vehicles equipped with rear disc brakes, remove
the rear brake caliper from the knuckle assembly.
Refer to Section 4E1, Rear Disc Brakes.
5. Disconnect the parking brake from the knuckle as-
sembly. Refer to Section 4G, Parking Brake.
6. Disconnect the front parallel link from the knuckle.
Refer to ”Front Parallel Link” in this section.
7. Disconnect the rear parallel link from the knuckle.
Refer to ”Rear Parallel Link” in this section.
8. Disconnect the rear trailing link from the rear
knuckle. Refer to ”Rear Trailing Link” in this sec-
tion.
9. On vehicles equipped with rear drum brakes, re-
move the clip that secures the brake line to the
strut assembly.
10. On vehicles equipped with rear drum brakes, dis-
connect the brake line from the knuckle assembly.
Refer to Section 4E2, Rear Drum Brakes.
11. Remove the rear knuckle–to–strut assembly nuts
and the bolts.
12. Disconnect the brake line from the strut assembly
and remove the rear knuckle from the strut assem-
bly.

2D – 10IREAR SUSPENSION
DAEWOO V–121 BL4
Installation Procedure
1. Install the rear knuckle into the vehicle and install
the brake line into the strut assembly bracket.
2. Install the knuckle–to–strut assembly bolts and
nuts. Do not tighten.
3. Install the clip securing the brake line to the strut
assembly.
4. Tighten the knuckle–to–strut assembly nuts.
Tighten
Tighten the knuckle–to–strut assembly nuts to 100
NSm (74 lb–ft).
5. Connect the rear trailing link to the rear knuckle.
Refer to ”Rear Trailing Link” in this section.
6. Connect the rear parallel link to the knuckle. Refer
to ”Rear Parallel Link” in this section.
7. Connect the front parallel link to the knuckle. Refer
to ”Front Parallel Link” in this section.
8. Connect the parking brake to the knuckle assembly.
Refer to Section 4G, Parking Brake.
9. On vehicles equipped with rear drum brakes, con-
nect the brake line to the knuckle assembly. On
vehicles equipped with rear disc brakes, install the
rear brake caliper onto the knuckle assembly. Refer
to Section 4E1, Rear Disc Brakes.
10. On vehicles equipped with the antilock braking sys-
tem, install the ABS speed sensor. Refer to Section
4F, Antilock Brake System.
11. Install the wheel. Refer to Section 2E, Tires and
Wheels.
12. Lower the vehicle.
TRAILING LINK
Removal Procedure
1. Raise and suitably support the vehicle.
2. Remove the rear trailing link–to–rear knuckle nut.
3. Remove the rear trailing link–to–trailing link bracket
nut and the rear trailing link–to–knuckle bolt.
4. Remove the rear trailing link.

TIRES AND WHEELS 2E – 7
DAEWOO V–121 BL4
Recoating Procedure
CAUTION : To avoid serious personal injury when ap-
plying any two–part component paint system, follow
the specific precautions provided by the paint
manufacturer. Failure to follow these precautions
may cause lung irritation and an allergic respiratory
reaction.
1. Clean the surface.
2. Soak the wheel with Amchem Alumi Prep No. 33 or
equivalent for 1 to 3 minutes. Rinse the wheel with
water and blow it dry.
3. Soak the wheel with Amchem Alodine No. 1001 or
equivalent for 1 to 3 minutes. Rinse the wheel with
water and blow it dry.
4. Finish with Ditzler Delclear Urethane and Ditzler
Ultra–Urethane Additive or equivalent, using three
coats.
1st coat – spray on a light mist coat; let dry.
2nd coat – spray or paint on a light coat; let dry.
3rd coat – spray or paint on a heavy double wet
coat; let dry.
5. Let the urethane dry for 24 hours or flash for 30
minutes and force dry at 60°C (140°F) for 30 min-
utes. Allow the urethane to cool for 5 minutes be-
fore mounting the wheel on the vehicle.
OFF–VEHICLE BALANCING
Perform wheel balancing with an electronic off–vehicle ba-
lancer. The balancer is easy to use and gives both a static
and a dynamic balance. Unlike on–vehicle balancing, the
off–vehicle balancer does not correct for drum or rotor im-
balance. This drawback is overcome by its accuracy (usu-
ally to within 1/8 ounce). Secure the wheel on the balancer
with a cone through the back side of the centerhole, not
through the wheel bolt holes.
CORRECTING NON–UNIFORM TIRES
There are two ways to correct properly balanced tires
which still vibrate. One method uses an automatic ma-
chine which loads the tire and buffs small amounts of rub-
ber from high spots on the outer two tread rows. Correction
by this method is usually permanent and, if it is done prop-
erly, 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 perma-
nently.
Another method is to dismount the tire and rotate it 180 de-
grees on the rim. Do this only on the tire and wheel assem-
blies which are known to be causing a vibration because
this method is just as likely to cause good assemblies to
vibrate.

TIRES AND WHEELS 2E – 9
DAEWOO V–121 BL4
GENERAL DESCRIPTION
AND SYSTEM OPERATION
TIRE AND WHEEL BALANCING
There are two types of tire and wheel balancing: static and
dynamic.
Static balance is the equal distribution of weight around
the wheel. Assemblies that are statically unbalanced
cause a bouncing action called wheel tramp. This condi-
tion may eventually cause uneven tire wear.
Dynamic balance is the equal distribution of weight on
each side of the centerline so that when the assembly
spins there is no tendency for it to move from side to side.
Assemblies that are dynamically unbalanced may cause
wheel shimmy.
General Balance Precautions
Remove all deposits of foreign material from the inside of
the wheel.
CAUTION : Remove stones from the tread in order to
avoid operator injury during spin balancing.
Inspect the tire for any damage. Balance the tire according
to the equipment manufacturer’s recommendations.
Wheel Weights
If more than 85 grams (3.0 ounces) are needed to static
balance the wheel, split the wheel weights as equally as
possible between the inboard and the outboard flanges.
Balancing the assemblies with factory alloy wheels re-
quires the use of special nylon–coated, clip–on wheel
weights. These weights are designed to fit over the thicker
rim flange of the alloy wheel. Install these weights with a
plastic–tipped hammer.
Adhesive wheel weights are also available. Use the follow-
ing procedure to install adhesive wheel weights
Adhesive Wheel Weight Installation
1. Clean the wheel by sanding it to bare alloy where
the wheel weight will be installed.
2. Use a clean cloth or paper towel saturated with a
mixture of half isopropyl alcohol and half water to
wipe the place where the wheel weight will be
installed.
3. Dry the area with hot air. The surface of the wheel
should be warm to the touch.
4. Warm the adhesive backing on the wheel weights
to room temperature.
5. Remove the tape from the back of the weights. Do
not touch the adhesive surface.
6. Apply the the wheel weight and press it on with
hand pressure.
7. Secure the wheel weight with a 70–110 N (16–25
lb) force applied with a roller.
TIRE CHAIN USAGE
Due to limited tire–to–body clearance on certain vehicles,
recommendations for tire chain use are published in the
Owner ’s Manual. When tire chains need to be used, most
current Daewoo vehicles require SAE Class ”S” tire
chains. These may also be designated as 1100 Series,
type PL tire chains. These chains are specifically designed
to limit the ”fly off” effect which occurs when the wheel ro-
tates.
Be sure that only fine–link chains are used which do not
add more than 15 mm (0.590 inch), including the lock, to
the tread surface and the inner sides of the tires. Manufac-

FRONT DISC BRAKES 4D – 3
DAEWOO V–121 BL4
MAINTENANCE AND REPAIR
ON–VEHICLE SERVICE
SHOE AND LINING
Removal Procedure
1. Raise and suitably support the vehicle.
2. Remove the front wheels. Refer to Section 2E,
Tires and Wheels.
3. Remove the lower bolt of the caliper assembly re-
taining frame.
Important : Caliper assembly removal is not necessary to
service the brake pads.
4. Pull the caliper piston housing up.
5. Remove the brake pads.
Installation Procedure
1. Measure the minimum lining thickness. Refer to
”Lining Inspection” in this section.
2. Install the brake pads into the caliper.
3. Push the piston inward, if needed.
Notice : Take care not to damage the piston seal when the
piston housing frame is pulled down.
4. Pull down the caliper piston housing and secure it
to the retaining frame with the lower bolt.
Tighten
Tighten the retaining frame–to–caliper housing bolts
to 27 NSm (20 lb–ft).
5. Install the front wheels. Refer to Section 2E, Tires
and Wheels.
6. Lower the vehicle.
CALIPER ASSEMBLY
Removal Procedure
1. Raise and suitably support the vehicle.
2. Mark the position of the front wheels relative to the
wheel hubs and remove the wheels. Refer to Sec-
tion 2E, Tires and Wheels.
3. Remove the bolt and the washers attaching the
brake hose to the caliper.
4. Disconnect the brake hose, and plug the openings
in the caliper and the brake hose to prevent fluid
loss and contamination.
5. Remove the caliper mounting bolts from the steer-
ing knuckle, and remove the caliper assembly.

FRONT DISC BRAKES 4D – 5
DAEWOO V–121 BL4
SPLASH SHIELD
Removal Procedure
1. Remove the rotor. Refer to ”Rotor” in this section.
2. Remove the screws for the splash shield from the
steering knuckle.
3. Remove the splash shield.
Installation Procedure
1. Install the splash shield.
2. Secure the splash shield to the steering knuckle
with the screws.
Tighten
Tighten the splash shield–to–steering knuckle screws
to 4 NSm (35 lb–in).
3. Install the rotor. Refer to ”Rotor” in this section.

4E2 – 8IREAR DRUM BRAKES
DAEWOO V–121 BL4
Installation Procedure
1. Install the wheel cylinder to the backing plate with
the wheel cylinder bolt.
Tighten
Tighten the wheel cylinder–to–backing plate bolt to 8
NSm (71 lb–in).
2. Connect the brake line to the wheel cylinder.
Tighten
Tighten the brake line to 16 NSm (12 lb–ft)
3. Install the shoe and lining, and the brake drum. Re-
fer to ”Shoe and Lining” in this section.
4. Bleed the brakes. Refer to Section 4A, Hydraulic
Brakes.
BACKING PLATE
Removal Procedure
1. Raise and suitably support the vehicle.
2. Remove the brake shoe components, including
complete removal of the parking brake with the re-
tainer. Refer to ”Shoe and Lining” in this section
and Section 4A, Hydraulic Brakes.
3. Remove the nuts that secure the wheel hub assem-
bly to the backing plate.
4. Remove the brake line and plug the opening in the
line to prevent fluid loss or contamination.
5. Remove the wheel cylinder assembly. Refer to
”Wheel Cylinder Assembly” in this section.
6. Remove the wheel hub assembly.
7. In case of ABS brake, disconnect the cable that
goes to the wheel speed sensor.
8. Separate the backing plate and the gasket.

4F – 62IANTILOCK BRAKE SYSTEM
DAEWOO V–121 BL4
FRONT WHEEL SPEED SENSOR
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect the front wheel speed sensor electrical
connector.
3. Raise and suitably support the vehicle.
4. Remove the wheel. Refer to Section 2E, Tires and
Wheels.
5. Turn the steering wheel to expose the speed sen-
sor. It is located at the rear of the steering knuckle
near the tie rod end.
6. Remove the bolt and the front wheel speed sensor
from the steering knuckle.
7. Free the feedthrough grommet for the speed sen-
sor harness and the hydraulic pipe from the strut
tower. Remove the speed sensor harness from it so
that the connector can pass through the hole in the
strut tower.
8. Free the sensor harness from the grommet holders
and the clamps and pull it through the fender.
Installation Procedure
1. Install the front wheel speed sensor to the steering
knuckle. Secure it with the bolt.
Tighten
Tighten the front wheel speed sensor bolt to 8 NSm
(71 lb–in).
2. Feed the sensor harness into the engine compart-
ment, insert it into the grommet, and secure the
grommet into the hole in the strut tower.
3. Secure the harness into the grommet holders and
the clamps under the fender.
4. Install the wheel. Refer to Section 2E, Tires and
Wheels.
5. Lower the vehicle.
6. Connect the front wheel speed sensor electrical
connector.
7. Connect the negative battery cable.

ANTILOCK BRAKE SYSTEM 4F – 63
DAEWOO V–121 BL4
FRONT WHEEL SPEED SENSOR
JUMPER HARNESS
(Left–Hand Drive Shown, Right–Hand Drive
Similar)
Removal Procedure
1. Disconnect the negative battery cable.
2. Disconnect connector from the EBCM.
3. Remove the appropriate terminals from connector:
S Right–side – terminals 4 (WHT) and 5 (GRY).
S Left–side – terminals 6 (BRN) and 7 (LT BLU).
4. Both speed sensor harnesses break out of the ABS
wiring harness just beyond the ABS connector. The
right–side speed sensor harness crosses the top of
the fire wall to the right–side fender area. The left–
side speed sensor harness goes directly to the left–
side fender area.
5. Free the speed sensor harness from the wiring har-
ness.
6. Remove the front wheel speed sensor electrical
connector from the retaining clamps and disconnect
the harness from the sensor connector.
Installation Procedure
1. Install the front wheel speed sensor jumper har-
ness.
2. Connect the front wheel speed sensor electrical
connector and secure it into the clamps.
3. Replace the jumper harness into the wiring har-
ness.
4. Insert the terminals into connector as they had
been removed:
S Right–side – terminals 4 (WHT) and 5 (GRY).
S Left–side – terminals 6 (BRN) and 7 (LT BLU).
5. Connect EBCM connector.
6. Connect the negative battery cable.

4G – 6IPARKING BRAKE
DAEWOO V–121 BL4
10. For vehicles with rear disc brakes, remove the rear
hub assembly.
11. Remove the retaining pin.
12. Remove the parking brake cable from the trailing
shoe.
13. Remove the bolts securing the parking brake cable
to the underbody clip on both the driver and pas-
senger sides of the vehicle.
14. Remove the parking brake cable from the clip near
the fuel tank strap.
15. Remove the parking brake cables from the vehicle.
Installation Procedure
1. Install the new parking brake cable (if necessary)
through the rear drum brake backing plate and at-
tach to the brake trailing shoe lever.
2. Insert the plastic sleeve in the rear drum backing
plate and press in the retaining ring. Ensure the
parking brake cable is routed correctly.