2004 DAEWOO LACETTI ACC

NUBIRA/LACETTIFRONT 4–11
3–2. REPAIR PROCEDURE
1. Remove the related parts.
S Parts to be removed when removing the front panel and
front wheelhouse.
S Parts on passenger side of dash panel lower which are
especially flammable.
S Instrument panel, wiring harness, related parts and oth-
ers.
Note : Remove according to part damaged.
2. Roughly pull out and straighten the damaged area to
approximately the original shape.
S Attach the car to the frame straightener by tightening the
underbody clamps at the horizontal pinch weld points.
S Before cutting off the damaged sections, pull them out
so that they are restored to the original shape.
S Roughly cut off the front longitudinal according to the ex-
tent of damage before roughly pulling out the damage
makes repair of the related parts difficult.
S Do not pull out more than necessary.
Note : Check the condition of the door and hinges.
3. Peel off the undercoat and sealer.
S Heat the undercoat and sealer at the welding areas of
the damaged parts with a gas torch and peel off the un-
dercoat and sealer with a steel spatula.
CAUTION : Be careful not to burn the fittings inside
the passenger compartment when heating.
4. Cut and pry off the front longitudinal.
Note : It’s not necessary to separate the wheelhouse
from the front longitudinal if the wheelhouse is to be re-
placed also.
S Center punch around the spot weld imprints on the
wheelhouse and other related parts.
S Use the special spot cutter to drill holes at the spot weld
nuggets on the center punched areas.
S Cut off the front longitudinal with an air chisel, leaving the
welding flanges intact.
S Level and finish the burrs from the pried off spot welds
with a disc sander.
CAUTION : To prevent eye injury, wear goggles or
safety glasses whenever sanding, cutting, or grind-
ing.
Fig. 17
5. Mold damaged related parts.
S Fill any holes drilled by welding.
CAUTION : To prevent eye injury and burns when
welding, wear an approved welding helmet, gloves
and safety shoes.
S Reshape the wheelhouse and other damaged parts and
even out the welding flanges with a hammer and dolly.
Fig. 18
6. Cut the new front longitudinal to align it with body, then
set the wheelhouse and front panel.
S Cut the new front longitudinal with a hand saw and it will
be butt welded.
S Grind both sides of the welding section of the front longi-
tudinal and wheelhouse with a disc sander to remove the
paint and expose the steel plate.
CAUTION : To prevent eye injury, wear goggles or
safety glasses whenever sanding, cutting, or grind-
ing.
S Tighten the new front longitudinal against remaining
parts with the vise grips and pliers.
S Place a jack under the front longitudinal end and support
it, and measure the positions for correct setting.
S Set and clamp the front panel in place with the vise grips.

4–12 FRONTNUBIRA/LACETTI
Note : Use of jigs is recommended for correct positions
and check that the both front longitudinal and wheel-
house are parallel.
S Tack weld the clamped section for temporary installa-
tion.
7. Perform the main welding.
S Weld as much as possible with the jig still mounted.
S Make MIG or gas welds at the butt joints at the front lon-
gitudinal, carefully.
Fig. 19
S Spot weld the wheelhouse with the front longitudinal
flange areas and front panel.
CAUTION : To prevent eye injury and burns when
welding, wear an approved welding helmet, gloves
and safety shoes.
S Perform a trial welding first, and check the welding con-
dition.
S Increase the number of spot by 20% for areas to be spot
welded.
Fig. 20
S Level the weld beads at the longitudinal butt joints area
with disc sander.
S Make the stiffener(Thickness: 2.8 mm Min., Width: 80
mm) according to the form of longitudinal butt joint areasand weld the stiffener at the longitudinal butt joint areas
with MIG welder.
Fig. 21
8. Finish the welding areas.
S Level the gas or MIG welded areas with disc sander.
S Use a hammer and dolly to even out the wheelhouse and
longitudinal flanges for a close fit.
9. Apply the sealer.
S Apply the sealer to the joint areas of the dash panel lower
and floor panel areas.
10. Apply the undercoat.
S Undercoat to the joint and overlapped areas of the front
floor, longitudinal under side and the inside of front, rear
wheelhouse.
11. Apply the paint.
CAUTION
S Ventilate when spraying paint. Most paint contains sub-
stances that are harmful if inhaled or swallowed. Read
the paint label before opening paint container.
S Avoid contact with skin. Wear an approved respirator,
gloves, eye protection and appropriate clothing when
painting.
S Paint is flammable. Store in a safe place, and keep it
away from sparks, flames or cigarettes.
12. Coating the anti–rust agents.
S Coating the anti–rust agents to the end of front panel
side and the front door hinge areas.
13. Install the related parts.
S Clean the passenger compartment.
S Wiring harness, instrument panel and related parts.
S Parts of the passenger compartment.
S Chassis components.
S Engine, radiator and related parts.
S Aircon condenser and related parts.
S Head lamps and fenders.
S Heed, radiator grill, and bumper.
S Others.
S Install in the reverse order in which they were removed.

10–2 RUST PREVENTIONNUBIRA/LACETTI
1. ZINC TREATED STEEL PLATE
REPAIR
Avoid puttying as much as possible when repairing a
new car. Use alternative methods as much as possible.
.
CAUTION
S Most paints contain substances that are harmful if in-
haled or swallowed. Read the paint label before openingthe container. Spray paint only in a well ventilated area.
S Cover spilled paint with sand, or wipe it up at once.
S Wear an approved respirator, gloves, eye protection and
appropriate clothing when painting. Avoid contact with
skin.
S If paint gets in your mouth or on your skin, rinse or wash
thoroughly with water. If paint gets in your eyes, flush
with water and get prompt medical attention.
S Paint is flammable. Store it in a safe place, and keep it
away from sparks, flames or cigarettes.
Operation
Tools/MaterialsProcedureRemarks
1. Prep the repair
area.Double–action sander, #80 sand-
paper.Sand the area with a double–action sander
and #80 sandpaper. Clean with wax and
grease remover..
2. Apply putty
Note : Putty can be
applied after priming
as described in step 4.
Epoxy–based putty.
S Mix the putty and hardener ac-
cording to the manufacturer’s di-
recctions.
S Polyester resin putty. Body filler.Apply in several thin coats if necessary. Try
to avoid leaving pinholes in the putty.
S Follow the manufacturer’s recommenda-
tions for preparaton.
.
3. Sand and clean
the puttied area.Double–action sander, orbital
sander, hand sanding file, #80,
#120, #240 sandpaper, wax and
grease remover, shop towels.Rough–sand the area with a double– action
sander and #80 sandpaper, then sand with
#120 sandpaper. Featheredge with #240
sandpaper. Clean with wax and grease re-
mover..
4. Coat with primer.
Note : Apply to bare
sheet metal and put-
tied area.
Epoxy–based primer and harden-
er, epoxy thinner.
S Mix and thin the primer accord-
ing to the manufacturer’s direc-
tions.
Apply 2–4 coats, allowing sufficient flash time
between coats.
Force dry at 60–70
C(140–158
F) for at
least 30 minutes.Spray to
a thick-
ness of
30–35
microns.
5. Sand and clean
the whole area.Double–action sander, #400
sandpaper, wax and greases re-
mover, shop towels.Sand the whole area to be repainted with a
double–action sander and #400 sandpaper.
Blow off with compressed air. Clean with wax
and grease remover..
6. Coat the whole
area to be repainted
with primer/ surfacer.
Polyester/urethane resin primer/
surfacer.
S Mix and thin the primer accord-
ing to the manufacturer’s direc-
tions.
Apply 2–4 coats, allowing sufficient flash time
between coats.
Force dry at 60–70
C(140–158
F) for at
least 30 minutes.Spray to
a thick-
ness of
30–35
microns.
7. Sand and clean
the whole area to be
repainted.Hand sanding file, double–action
sander, #240, #320, #400, #600
sandpaper, wax grease and re-
mover, shop towels.Sand the repair area by hand with #240
sandpaper until it’s level. Sand the whole
area to repainted with #320– 600 sandpaper.
Clean with wax and grease remover..
8. Top–coat the
whole area to re-
painted.
Acrylic urethane resin top coat
paint, hardener, and thinner.
S Mix and thin the paint according
to the manufacturer’s directions.
Apply 2–4 coats, allowing sufficient flash time
between coats.
Force dry at 60–70
C(140–158
F) for at
least 30 minutes.Spray to
a thick-
ness of
40–50
microns.