Page 2369 of 2643

SECTION : 9I
WATERLEAKS
TABLE OF CONTENTS
SPECIFICATIONS9I–1 . . . . . . . . . . . . . . . . . . . . . . . . . . .
Recommended Materials for Waterleak Repairs 9I–1.
Watertest Stand Specifications 9I–1. . . . . . . . . . . . . . .
DIAGNOSIS9I–2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Waterleak Diagnosis 9I–2. . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE AND REPAIR9I–5 . . . . . . . . . . . . . . . .
ON–VEHICLE SERVICE 9I–5. . . . . . . . . . . . . . . . . . . . . .
Waterleak Repair 9I–5. . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONS
RECOMMENDED MATERIALS FOR WATERLEAK
REPAIRS
Leak Areas Repair Materials
Windshield, back windowUrethane adhesive, caulking kit, or the equivalent
Metal jointsBrushable seam sealer which can be painted
Ventilation ducts3Mnv Auto Bedding and Glazing Compound or the equiva-
lent
Small cracks and pin holes3Mnv Drip–Check Sealer or the equivalent
Large holes3Mnv Automotive Joint and Seam Sealer
Weatherstrips3Mnv 08011 Weatherstrip Adhesive or the equivalent
Bolts, studs, and screwsStrip caulk
WATERTEST STAND SPECIFICATIONS
ApplicationDescription
Nozzle TypeFull jet spray nozzle #1/2 GG–25 or equivalent with a 60°
included angle
Nozzle HeightApproximately 1 600 mm (63.0 in.) from the floor
Volume of Flow14L (3.7 gal) per minute
Pressure155 kPa (22.5 psi) measured at the nozzle
Windshield and A–Pillar Test Stand PositionApproximately 30° down, 45° toward the rear, and aimed
at the corner of the windshield
B–Pillar Test Stand PositionApproximately 30° down, 45° toward the rear, and aimed
at the center of the rear door
Back Window and Rear Deck Lid Test Stand PositionApproximately 30° down, 30° toward the front and aimed
approximately 610 mm (24.0 in.) from the corner of the
back window
Page 2370 of 2643

9I – 2IWATERLEAKS
DAEWOO V–121 BL4
DIAGNOSIS
WATERLEAK DIAGNOSIS
The repair of waterleaks in the body requires proper test-
ing and diagnosis. Repair waterleaks by adjusting the mis-
aligned parts and using the proper repair materials. First,
determine what conditions cause the leak. For example,
the leak may occur only when the vehicle is parked on an
incline, or water may appear only in the spare tire compart-
ment. Second, test the area for the source of the leak us-
ing the following testing methods. If the general leak area
is found, determine the exact entry point of the leak by us-
ing a water hose or an air hose. If the general leak area is
not obvious, use the watertest stands to determine the
area of the leak. It may be necessary to remove some inte-
rior trim panels or some parts in order to locate the leaks.
Important : It is necessary to find the origin of all the leaks
before making any repairs. Random repairs may stop the
leak only temporarily and may make future repairs more
difficult. Continue localized testing in the general area in
order to ensure that all leaks are found.
Generalized Testing
1. Set up the watertest stands.
1) 1/2–inch by 36–inch Pipe
2) Full–jet Spray Nozzle #1/2 GG–25 or Equiva-
lent Nozzle Height at 1,600 mm to the Floor
3) 1/2–inch Coupling
4) 1/2–inch by 1/2–inch by 1/4–inch Reducing T
(Right Only)
5) 1/2–inch Coupling (Left Only)
6) 1/2–inch Cross (Right Only) )
7) 1/2–inch Tee (Left Only)
8) 1/2–inch Pipe–to–Hose Nipple (Right Only)
9) 5/8–inch Female Hose Coupling
10) 5/8–inch Input Hose (2 Feet Long, Right Only
11) 1/2–inch Close Nipple
12) 1/2–inch Cross with Weld–on 1/2–inch Cap
13) 1/2–inch by 12–inch Nipple
14) 1/2–inch Cap
15) 5/8–inch Female Hose Coupling
16) 5/8–inch Cross Hose (12 Feet Long)
17) 5/8–inch Hose Quick Connect
18) 1/2–inch Pipe–to–Hose Nipple
19) 1/2–inch by 30–inch Pipe (Straight)
20) 1/4–inch Water Pressure Gauge (Right Only)
2. Set up the watertest stand leak test.
Page 2371 of 2643
WATERLEAKS 9I – 3
DAEWOO V–121 BL4
3. Perform the watertest stand leak test. Refer to ”Wa-
tertest Stand Specifications” in this section.
4. If the local water pressure does not allow the re-
quired water pressure of 155 kPa (22.5 psi), moveboth stands closer to the vehicle so that the water
spray overlaps.
Localized Testing (Spot Test)
1. Do localized testing with a water hose or an air
hose.
2. Begin testing by spraying the air or the water at the
base of the suspected leak area. Continue spraying
the air or the water upward until the leak is found.
Water Hose Test
1. Place another person inside the vehicle in order to
detect the location of the leak.
2. Use a water hose without a nozzle.
3. Begin spraying the water at the base of the sus-
pected leak area. Continue spraying the water up-
ward until the leak is found.
Page 2372 of 2643
9I – 4IWATERLEAKS
DAEWOO V–121 BL4
Air Hose Test
1. Apply soapy water to the outside of the vehicle in
the suspected leak area.
2. Blow air from inside the vehicle. The air pressure
should not exceed 205 kPa (29.7 psi).
3. Determine the location of the leaks from the
bubbles formed in the soapy water.
Page 2373 of 2643

WATERLEAKS 9I – 5
DAEWOO V–121 BL4
MAINTENANCE AND REPAIR
ON–VEHICLE SERVICE
WATERLEAK REPAIR
Some waterleaks around the glass can be repaired with-
out removing the glass.
Important : This type of repair may be used only for ure-
thane– installed glass.
1. Remove the reveal molding in the area of the leak.
It may be necessary to remove the garnish molding
or the trim strip lace in order to locate the leak.
2. While spraying water over the leak area, carefully
push the glass outward in order to determine the
size of the leak.
3. Mark the location of the leak.
4. Use water to clean any dirt from the area. Dry the
area with an air hose.
5. Using a sharp knife, trim off the uneven edges of
the adhesive caulking material around the leak for a
distance of 75 to 100 mm (3 to 4 inches) on both
sides of the leak.
6. Using a sharp knife, trim off the uneven edges of
the adhesive material around the leak 75 to 100
mm (3 to 4 inches) on both sides of the leak.
7. Prime the trimmed area with the primer.
Page 2374 of 2643
9I – 6IWATERLEAKS
DAEWOO V–121 BL4
8. Allow the primer to dry for 5 minutes.
9. Apply the adhesive over the leak and for a distance
of 75 to 100 mm (3 to 4 inches) on both sides of the
leak.
10. Immediately after applying the adhesive, use a flat
stick or a similar tool to work the adhesive into the
leak area and into the joint between the original ma-
terial and the vehicle body in order to ensure a wa-
tertight seal.
11. Spray warm or hot water over the repaired area in
order to determine if the leak was repaired. Do not
run a heavy stream of water directly on the freshly
applied adhesive.
12. Install the trim strip lace if it was removed.
13. Install the garnish molding if it was removed.
14. Install the reveal molding.
Important : After the completion of any waterleak repair,
retest the area using the watertest stands. Do not use
localized testing procedures on the newly–repaired areas,
as the repair material may dislodge under abnormal pres-
sure.
Page 2375 of 2643

SECTION : 9J
WINDNOISE
TABLE OF CONTENTS
DIAGNOSIS9J–1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Windnoise Diagnosis 9J–1. . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE AND REPAIR9J–2 . . . . . . . . . . . . . . . . ON–VEHICLE SERVICE 9J–2. . . . . . . . . . . . . . . . . . . . . .
Windnoise Repair 9J–2. . . . . . . . . . . . . . . . . . . . . . . . . . .
DIAGNOSIS
WINDNOISE DIAGNOSIS
CAUTION : An assistant should drive the vehicle
while the technician checks for the location of the
windnoise, in order to prevent personal injury or ve-
hicle damage.
A test drive in the vehicle is necessary to accurately deter-
mine the location of the windnoise. Often there is a primary
leak and secondary leaks. Failure to repair all leaks will
only reduce the windnoise, not eliminate it.
During the test drive the technician should bring the follow-
ing items to aid in determining the location of the wind-
noise.
S A mechanics stethoscope or vacuum hose
S Masking tape
S Strip caulk
S A china marking pencil
S A screwdriver
Perform the following steps in order to conduct the road
test:
1. Choose a route that includes smooth straight
streets that run in all four directions (north, south,
east, and west).
2. Choose streets with little traffic or noise that would
interfere with the test.
3. Drive the vehicle at the speeds at which the noise
was noticed by the customer or until the noise is
produced. Do not exceed legal speed limits.
4. The windnoise is external if any of the following
conditions occur:
S The windnoise is caused by the wind.S The windnoise can be heard with the door glass
lowered and while the vehicle is being driven.
S The windnoise is eliminated when tape is placed
over various moldings and gaps.
5. Internal windnoise is air leaving the vehicle and
should be repaired in the following manner.
S In order to locate the leak, tape off the body lock
pillar pressure relief valves. This will cause air
pressure to build up inside the vehicle and en-
hance the windnoise.
S Use a stethoscope or a vacuum hose to locate
the leak.
S Temporarily repair the leak with masking tape.
S Continue testing in order to determine if the
noise has been eliminated or if other leaks exist.
S When all leaks have been found, return to the
shop and make permanent repairs with the
proper alignment techniques and sealing materi-
als.
Page 2376 of 2643
9J – 2IWINDNOISE
DAEWOO V–121 BL4
MAINTENANCE AND REPAIR
ON–VEHICLE SERVICE
WINDNOISE REPAIR
Windnoise leak repairs are very similar to waterleak re-
pairs. Refer to Section 9I, Waterleaks. The actual proce-
dure depends on the type of seal being repaired.
Leaks around the door opening weatherstrips do not al-
ways indicate a faulty weatherstrip. A door or window ad-
justment may resolve the condition. Refer to Section 9P,
Doors or Section 9L, Glass and Mirrors.