Chevrolet 1980 Light Duty Truck Service Manual page 132

2D -8 BODY
Fig. 2 D -1 6 -R e m o v in g W in ds hie ld from Opening
same time assist the lip of the rubber weatherstrip channel
over the pinchweld flange with a flat bladed tool. See figures
2D-14 and 2D-15.
4. With the aid of an assistant outside the cab, remove
the windshield from the opening. See figure 2D-16.
5. Remove all excess urethane adhesive and any
remaining pieces of weatherstrip from pinch-weld flange.
6. If sheet metal and paint repairs are required, refer
to "Repairing and Refinishing Pinchweld Flange" of this
section.
Checking W indshield Opening
Due to the expanse and contour of the windshield it
is imperative in the event of a stress crack that the
windshield opening be thoroughly checked before installing
a replacement windshield. The replacement glass is used as
a template.
1. Check for the following conditions at the previously
marked point of fracture.
a. Chipped edges on glass.
b. Irregularities in body opening.
c. Irregularities in rubber channel weatherstrip.
2. Check flange area for solder, weld high spots, or
hardened spot-weld sealer. Remove all high spots.
3. Check windshield glass to opening, by supporting
glass with six spacers contained in packet J-22577. See figure
2D-17.
Do not strike glass against body metal.
NOTICE:
Chipped edges on the glass can lead to future breaks.
4. With the windshield supported and centered in its
opening, check the relationship* of the glass to the body
opening flange around the entire perimeter of the glass.
5. Check the relationship of glass to opening as
follows:
a. Inside edge of glass to body flange.
b. Outer edge of glass to parallel body metal.
6. Mark areas of body metal or flange to be reformed.
Remove glass and correct as outlined in this section.
Fig. 2D-1 7--Checking W in ds hie ld Opening
7. Recheck windshield
satisfactory proceed as follows:
Repairing and Refinishing Pinch-Weld Flange
and/or Surrounding Areas
1. Repair all metal deformations in the windshield
opening area for appearance.
2. Sand to smooth surface using No. 320 sandpaper.
3. Apply primer - surfacer (DuPont 80 S Primer -
Surfacer, PPG 204-1000 Red Flash Primer or PPG 700-345
Repair Primer/or equivalent) and sand smooth for
required surface.
4. Apply color coats of 9984024 acrylic enamel (or
equivalent) catalyzed as indicated.
Installation (Fig. 2D-18)
Installation of the windshield requires a number of
timed (cure time) steps. This timing is important and must
be followed. All cure times are minimum, unless indicated
otherwise. When performing a step that requires a cure
time, it is not necessary to stop and wait for the cure time
to elapse. Make a note of the cure time and move on to any
following step that does not interfere with the timed
sequence.
1. Wipe pinch-weld clean with a dry cloth. Make sure
most of the previous urethane has been removed.
2. Apply pinch-weld primer with a new applicator to
pinch-weld as shown in View B.
Primer must be thoroughly stirred and agitated prior
to application.
Allow primer to cure for at least 30 minutes (100 hour
maximum). Pinch weld flange must not exceed 160°F (38°C)
at time of primer application.
3. Apply rubber cleaner with a new applicator to both
channels of rubber weatherstrip as shown in View A. Allow
cleaner to remain for at least 5 minutes (4 hour maximum),
then wipe both channels with a clean dry cloth.
4. Apply rubber primer to both channels of rubber
weatherstrip that were cleaned in the previous step and are
shown in View A. Allow primer to cure for at least 30
minutes (30 day maximum).
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in its opening and
LIG H T T R U C K S E R V IC E M ANUAL
if