Daewoo Nubira. Manual - part 251

9I – 4

I

WATERLEAKS

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.

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.

9I – 6

I

WATERLEAKS

DAEWOO V–121 BL4

7.  Prime the trimmed area with the primer.

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,
re–test 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.

SECTION : 9J

WINDNOISE

TABLE OF CONTENTS

DIAGNOSIS

9J–1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 

WINDNOISE DIAGNOSIS

9J–1

. . . . . . . . . . . . . . . . . . . 

MAINTENANCE AND REPAIR

9J–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.