GMC 1982 Light Duty Truck Service Manual page 203

moldings, interior garnish
molding from the pinchweld. Clean up any remaining
adhesive left on the body from the reveal molding.
The reveal moldings can be removed from the urethane
adhesive by taking one end o f the molding and pulling it
away from the adhesive. The support molding is removed
in the sam e manner from inside the vehicle , pry up one
end o f the molding and pull it away from the pinchweld.
T hese molding are to be removed prior to windshield
removal.
3. Use a knife as shown in Fig. 2D-101 to cut the adhesive
completely around the perimeter of the glass. Knife,
J-24402-A or equivalent may be used. With help from
an assistant, carefully remove the glass.
4. If original glass is to be reinstalled, place it on a
protected bench or holding fixture; remove old material
using a razor blade or sharp scraper. Any remaining
traces of adhesive m aterial can be removed with
denatured alcohol or lacquer thinner dampened cloth.
W hen cleaning windshield glass, avoid contacting edge
of plastic laminate material (on edge of glass) with
volatile cleaner. Contact may cause discoloration and
deterioration of plastic laminate by wicking action. DO
N O T use a petroleum base solvent such as kerosene or
gasoline. The presence of oil will prevent adhesion of
new material.
W hen replacing the windshield, u re th a n e adhesive
(part no. 9631000 or Essex S C D 551.2 or equivalent)
be used in order to maintain original installation integrity.
The short method as described previously can be used
where original adhesive material left on window opening
pinchweld flanges after glass removal serves as a base for the
new adhesive to the glass. This method would be used in
cases of cracked windshields or removal of windows that are
still intact. The am ount of adhesive left in window opening
can be controlled during glass removal.
However, in some instances all the material must be
removed, to make a metal repair or to perform a paint-
refinishing operation. In these cases, an additional cleaning
and priming step is required before applying the urethane
molding and support
must
adhesive. See the instructions at the
"Installation".
Adhesive Service Kit or C artridge
Material listed have a short shelf life. Be sure materials
are fresh.
Urethane adhesive cartridge Essex SD C 551.2 or the
equivalent are provided singularly. Adhesive Kit No.
9631000 (urethane adhesive) or equivalent contains some of
the items needed to remove and replace a urethane adhesive
installed glass.
Additional items required:
1. Pinchweld primer for enamel painted surface Essex
SCD 435.34 or equivalent.
2. Clear glass primer, Essex SC D 435.18 or equivalent.
3. Black glass primer (included in kit 9631000) or Essex
SCD 435.20 or equivalent.
4. Solvent for cleaning edge of glass (preferably alcohol)
and adhesive dispensing gun No. J-24811 or an
equivalent sta n d a rd household ca rtridg e type gun
reworked as follows:
a. Widen end slot to accept dispensing end of adhesive
material tube.
b. Reduce diameter of plunger disc on rod so that disc
can enter large end of adhesive material tube.
5. Commercial type razor knife.
6. Urethane cutting knife No. J-24402-A or equivalent or
two pieces of wood for wire handles.
7. Two rubber support spacers.
Installation
Steps 1 through 11 are to be used for installing glass
onto the original urethane adhesive left behind when the
windshield was removed. In those instances where the
adhesive was entirely removed, to make a metal repair or to
perform a paint refinish operation, it is necessary to follow
this extra step, before starting Step 1.
• Thoroughly clean the metal area surrounding the
windshield opening by wiping with a clean alcohol-
dampened cloth. Allow to air dry. Then apply primer
for enamel painted surface Essex S C D 435.34 or
equivalent, to the same area, being careful not to
allow any spill over onto exposed paint surfaces as
this primer will dam age the paint finish. The surface
should not exceed 38°C (100°F) at the time of the
application. Refer to Fig. 2D-102. Allow the primer
to dry for thirty minutes.
1. From inside the vehicle, install the support molding
onto the pinchweld flange, the joint is to be located at
bottom center of the opening. See Fig. 2D-103.
2. Thoroughly clean the edge of the glass to which the
adhesive material will be applied by wiping with a clean
alcohol-dampened cloth. Allow to air dry.
W hen replacing the windshield, u rethane adhesive Part
No. 9631000 or Essex SC D 551.2 or equivalent must be
used in order to maintain original installation integrity.
3. Apply clear glass prim er, Essex S C D 435.18 or
equivalent around the entire perimeter of glass edge.
Refer tc Fig. 2D-102.
4. Apply the black glass
BODY 2D-41
beginning of
prim er in the u re th a n e