2004 DAEWOO LACETTI Lamp

5–6 ROOF, BACK PANEL AND REAR FLOOR PANEL NUBIRA/LACETTI
2. BACK PANEL
2–1. GENERAL DESCRIPTION
The back panel is joined to the side panel outer, rear
extension longitudinal and extension rear floor. It forms
the base for the rear combination lamps and other partsand maintains the rigidity of the rear body. Pay particu-
lar attention to twists and parallelism and check mount-
ing of related parts when welding.
Fig. 9 Back Panel Welding Assembly

NUBIRA/LACETTI ROOF, BACK PANEL AND REAR FLOOR PANEL 5–7
2–2. REPAIR PROCEDURE
1. Remove the related parts.
S Rear and trunk trims
S Trunk lid lock and related parts.
S Rear combination lamps and wiring harness.
S Rear bumper and related parts.
S Other related parts.
Fig. 10
2. Roughly pull out and straighten the damaged area.
S Check the damage and roughly pull out and repair the
related side panel inner, rear floor, rear longitudinal and
other damaged parts with the frame straightener before
removing the back panel.
S Attach the car to the frame straightener by tightening the
underbody clamps located at the jack up designated
points on the bottom of the frame door opening.
3. Cut and pry off the rear panel.
S Center punch around the spot weld imprints with the rear
side outer and extension rear floor panel.
S Use the special spot cutter to drill holes at the spot weld
nuggets on the rear side outer and extension rear floor
panel.
Note : When drilling holes be careful not to drill down to
the side outer and extension rear floor panel them–
selves.
S Cut off the rear panel with an air chisel, leaving the weld-
ing flanges intact.
S Level and finish the burrs from the fried off spot welds
with disc sander and repair all cracks, holes or other de-
fects by welding also repair the floor panel if necessary.
CAUTION : To prevent eye injury, wear goggles or
safety glasses whenever sanding, cutting, or grind-
ing.
Fig. 11
NOTE:
S I f damage has occurred only on one side, cut the dam-
aged section of the rear panel, trim the new panel to fit
the remaining section, then butt weld both parts at the
inner ends.
S Where damage has not extended into the rear side outer
panel, cut the rear panel from the body on either panel.
Fig. 12
4. Peel off the undercoat and sealer.
S Heat the undercoat and sealer at the welding areas of
the rear side outer panel and extension rear floor with a
gas torch and peel off the undercoat and sealer with a
steel spatula.
5. Mold damaged related parts.
S Use a hammer and dolly to mold damaged areas of the
rear side outer and extension rear floor panel.
S Even out the welding flanges with a hammer and dolly.
S Fill any holes drilled by welding.
6. Set the new rear panel.
S Grind both sides of the welding section of the rear panel
with a 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.

5–8 ROOF, BACK PANEL AND REAR FLOOR PANEL NUBIRA/LACETTI
S Clamp both the right and left sides with the vise grips as
shown.
S Weld the clamped sections for temporary installation.
CAUTION : To prevent eye injury and burns when
welding, wear an approved welding helmet, gloves
and safety shoes.
Fig. 13
7. Measure and check.
S Measure the trunk compartment diagonally to check it
for twisting or bending and its correct position with the
rear bumper installed.
S Temporarily assemble the rear combination lamps and
trunk, then check the clearances and level differences.
8. Perform the main welding.
S Make MIG or gas welds at the butt joints.
S Spot weld the back panel as shown.
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. 14
9. Finish the welding areas.S Level the gas or MIG welded areas with disc sander,
then even out high areas with a hammer being careful
not to deform them.
S Use a hammer and dolly to even out the rear side outer
and extension rear floor panel flanges for a close fit with
the surface of the rear panel.
10. Apply the sealer.
S Apply the sealer to the rear side outer joint and around
the rear lamps areas of the rear panel.
S Apply the sealer to the extension rear floor panel and
rear panel joint.
11. Apply the undercoat.
S Undercoat to the joint and overlapped areas of the rear
floor under side.
12. 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.
13. Install the related parts.
S Clean the trunk compartment.
S Install in the reverse order in which they were removed.
14. Check and adjust.
S Check clearances and level differences.
S Check the trunk locking and unlocking condition.
S Check all operation.
S Check for water leaks in the trunk compartment.
Note : Use specified check sheet for operation check
properly.

NUBIRA/LACETTI ROOF, BACK PANEL AND REAR FLOOR PANEL 5–11
3–2. REPAIR PROCEDURE
1. Remove the related parts.
S Parts to be removed when removing the back panel.
S Rear seat belt and rear seat.
S Muffler, fuel tank and related parts.
S Chassis parts.
S Other related parts.
CAUTION : Do not smoke while working near the
fuel system. Keep open flame away from the fuel
system. If necessary, remove the fuel tank and off
lines.
2. Roughly pull out and straighten the damaged area.
S Check the damage and roughly pull out and re pair the
related back panel, side panel, wheel house inner, rear
longitudinal and other damaged parts with the frame
straightener before remov ing the extension rear floor
panel, rear floor pane and back panel.
S Attach the car to the frame straightener by tightening the
underbody clamps located at the jack up designated
points on the bottom of the frame door opening.
Note : Measure in reference to the dimensions on the
body repair chart.
3. Cut and pry off the back panel.
S The back panel to be cut and pried off when removing
the back panel.
4. Cut and pry off the rear floor and extension rear floor
panel.
S Cut off the rear floor and extension rear floor with a gas
torch or air chisel leaving the spot welded flanges of the
rear longitudinal along the bold line in the figure below.
Note : Cut the rear floor 15mm(0.59in.) from welded
flange of the cross member rear seat.
S Center punch around the spot weld imprints with the rear
longitudinal, extension rear longitudinal and web plate.
S Use the special spot cutter to drill holes at the spot weld
nuggets on the center punched areas.
Fig. 17
Fig. 18
Note : When drilling holes be careful not to drill down to
the rear longitudinal, extension rear longitudinal and
web plate themselves.
S Cut and pry off the remaining rear floor and extension
rear floor panel with an air chisel, leaving the welding
flanges intact.
S Level and finish the burrs from the pried off spot welds
with disc sander and repair all cracks, holes or other de-
fects by welding also repair the rear longitudinal and ex-
tension rear longitudinal if necessary.
CAUTION : To prevent eye injury, wear goggles or
safety glasses whenever sanding, cutting, or grind-
ing.
Fig. 19
5. Peel off the undercoat and sealer.
S Heat the undercoat and sealer at the welding areas with
a gas torch and peel off the undercoat and sealer with
a steel spatula.
6. Mold damaged related parts.
S Use a hammer and dolly to mold damaged areas of the
rear longitudinal and extension rear longitudinal.
S Even out the welding flanges with a hammer and dolly.
S Fill any holes drilled by welding.

5–12 ROOF, BACK PANEL AND REAR FLOOR PANEL NUBIRA/LACETTI
CAUTION : To prevent eye injury and burns when
welding, wear an approved welding helmet, gloves
and safety shoes.
S Level and finish the burrs from the pried off spot welds
with disc sander.
S Sand off the paint and undercoat from both sides of the
flange to be welded.
7. Cut the new rear floor to align it with the body, then set
the new rear floor and extension rear floor.
S Cut the new part so it overlaps the cross member rear
seat by approximately 40mm(1.57in.).
Fig. 20
S Grind both sides of the welding section of the rear floor
and extension rear floor with a disk 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 Set and clamp the new panel in place with the vise grips.
Note : Use of jigs is recommended for correct positions
and check that the both rear logitudinal is parallel.
S Tack weld the clamped section for temporary installa-
tion.
CAUTION : To prevent eye injury and burns when
welding, wear an approved welding helmet, gloves
and safety shoes.S Remove the vise grips and temporarily install the rear
panel, then check the alignment, level differences and
outer appearance.
8. Remove the main welding.
S Weld the rear floor and cross member rear seat with a
MIG welder fillet weldings as shown.Fig. 21
S Spot weld the rear floor and extension rear floor with rear
longitudinal flange areas and web plate flanges as
shown.
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 weld ing con-
dition.
S Increase the number of spot by 20% for areas to be spot
welded.
9. Weld the back panel
S The back panel to be welded when replacement the
back panel.
10. Finish the welding area.
S Level the MIG welded areas with a disc sander, then
even out high areas with a hammer being careful not to
deform them.

NUBIRA/LACETTI FRAME DOOR OPENING, DOOR AND SIDE PANEL OUTER 6–3
1–2. REPAIR PROCEDURE
1. Remove the related parts.
S Doors.
S Weather strips, pillar trims and related parts.
S Carpet.
S Seat belt assembly
S Door switch and wiring harness.
S Fuel pipe and brake oil pipe.
S Other related parts.
Note : Pull out and straighten the damaged area to
approximately the original shape.
2. Remove the related parts.
S Damage may extend to the inner roof frame, the inner
frame door opening and the floor. Determine the extent
of the damage first, so the frame can be pulled out prop-
erly.
Note : Use heat–resistant protective cover for protect
painting areas, seats, carpets and other parts.
S Pull out and straighten the damaged areas.
S Do not pull out more than necessary.
3. Cut and pry off the frame door opening.
S Check the damage on the frame door opening, then cut
the new frame door opening so it will overlap by
30mm(1.18in.) in the pillar, front and rear.
S Cut the damaged area with a hand saw along the bold
line as shown.
Note : Be careful not to cut the inner panel. This could
result in extensive repair.
Fig. 2
S If the damage involves part of the center pillar, cut them
as shown.
Fig. 3
S Center punch around the spot weld imprints on the
welded flange.
S Use the special spot cutter to drill holes at the spot weld
nuggets.
Note : When drilling holes be careful not to drill down to
the inner panel..
S Pry off the frame door opening panel with an air chisel,
leaving the welding flanges intact.
CAUTION : To prevent eye injury, wear goggles or
safety glasses whenever sanding, cutting, or grind-
ing.
4. 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 Use a hammer and dolly to mold damaged areas of the
remaining inner panel and even out the welding flanges.
S Level and finish the burrs from the pried off spot welds
with disc sander.
S Sand off the paint and undercoat from both sides of the
flange to be welded.
5. Set the new frame door opening.
S Grind both sides of the welding section of the prepared
frame door opening part with a disk sander to remove
the paint and expose the steel plate.
S Clamp the new panel in place with the vise grips.
S Tack weld the clamped section for temporary installa-
tion.
CAUTION : To prevent eye injury and burns when
welding, wear an approved welding helmet, gloves
and safety shoes.

6–10 FRAME DOOR OPENING, DOOR AND SIDE PANEL OUTER NUBIRA/LACETTI
3–2. REPAIR PROCEDURE
1. Remove the related parts.
S Rear and trunk trims.
S Rear combination lamps and wiring harness.
S Rear bumper and related parts.
S Rear seat and rear seat belt.
S Chassis and fuel parts.
S Other related parts.
CAUTION : Do not smoke while working near the
fuel system. Keep open flame away from the fuel
system. If necessary, remove the fuel tank and off
lines.
2. Pull out and straighten the damaged area to approxi-
mately the original shape.
S Attach the car to the frame straightener by tightening the
underbody clamps at the four designated support points.
S Before cutting off the damaged sections, pull them out
so that they are restored to the original shape.
S Do not pull out more than necessary.
S Pull out and straighten the damaged areas of the rear
side outer panel, side inner panel and wheelhouse inner.
Note : Check the rear door locking and unlocking condi-
tion.
3. Cut and pry off the side panel outer.
S Cut at the rear pillar and side outer(rear side of frame
door opening) along the bold lines as shown with a hand-
saw and snips carefully.
Fig. 12
S Center punch around the spot weld imprints with the rear
panel, side panel inner and arch area.
S Use the special spot cutter to drill holes at the spot weld
nuggets on the rear side outer panel.
Note : When drilling holes be careful not to drill down to
the side panel inner and rear panel themselves.
S Cut the panel from the body with an air chisel, leaving the
welding flanges at the side inner panel, wheelhouse in-
ner and back panel intact.S Level and finish the burrs from the pried off spot welds
with a hammer, dolly and disc sander.
CAUTION : To prevent eye injury, wear goggles or
safety glasses whenever sanding, cutting, or grind-
ing.
Fig. 13
4. 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 Use a hammer and dolly to mold damaged areas of the
remaining inner panel and even out the welding flanges.
S Sand off the paint and undercoat from both sides of the
flange to be welded.
5. Set the new side panel outer.
S Cut the new side panel outer so it will overlap by
30mm(1.18in.) in the frame door opening area with a
hand saw.
Fig. 14
S Grind both sides of the welding section of the prepared
side panel outer with a disk sander to remove the paint
and expose the steel plate.
S Clamp the new panel in place with the vise grips.

NUBIRA/LACETTI FRAME DOOR OPENING, DOOR AND SIDE PANEL OUTER 6–11
Fig. 15
S Tack weld the clamped section for temporary installa-
tion.
CAUTION : To prevent eye injury and burns when
welding, wear an approved welding helmet, gloves
and safety shoes.
S Remove the vise grips and temporarily install the trunk
lid and doors, then check the clearances, level differ-
ences and outer appearance.
6. Perform the main welding.
S Weld the frame door opening area and pillar at the butt
joints with a gas or MIG welder.
S Spot weld the flanges and wheel arch of the side panel
outer as shown.
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. 16
Fig. 17
7. Finish the welding areas.
S Level the gas or MIG welded areas with a disc sander,
then even out high areas with a hammer being careful
not to deform them.
CAUTION : To prevent eye injury, wear goggles or
safety glasses whenever sanding, cutting, or grind-
ing.
S Use a hammer and dolly to even out the spot welded
flanges for a close fit with the surface of the side panel
outer.
S Fill in deformations and level differences of the welded
areas with solder or putty, then finish.
8. Apply the sealer.
S Apply the sealer to the matching surfaces of the web
plate, back panel lower, rear combination lamp area and
side panel outer.
9. Apply the undercoat.
S Undercoat to the rear wheelhouse and designated rear
floor.
10. Apply the paint.
CAUTION
S Ventilate when spraying paint. Most paint contains sub-
stances that are harmful if inhaled or swallowed.
S 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.
11. Coating the anti–rust agents.
S Coating the anti–rust agents to the inside of frame door
opening areas sufficiently.
12. Apply the deadner.
S Apply the deadner to the inside of side panel outer cen-
ter.(Left side only)