Chevrolet 1980 Light Duty Truck Service Manual page 131

Fig. 2 D - 1 3 - T y p i c a l Win dshield
When replacing a cracked windshield glass, it is very
important that the cause of the glass breakage be determined
and the condition corrected before a new glass is installed.
Otherwise, it is highly possible that a small obstruction or
high spot somewhere around the windshield opening will
continue to crack or break the newly installed windshield
especially when the strain on the glass caused by this
obstruction is increased by such conditions as wind
pressures, extremes of temperature, motion of the vehicle,
etc.
To replace a window installed with urethane adhesive
requires replacement of the adhesive material. Adhesive
service kits No. 1052420 and No. 9631000 contain some of
the materials needed to remove and replace a urethane
adhesive installed glass. These kits and other materials that
may be required can be obtained through the service parts
system. The components of glass adhesive kits (urethane)
No. 1052420 and 9631000 are as follows:
1. One tube of urethane adhesive material.
2. One dispensing nozzle.
3. Steel music wire.
4. Rubber cleaner.
5. Rubber primer.
6. Pinch-weld primer.
7. Blackout primer.
8. Filler strip (for use on windshield installations on
vehicles equipped with embedded windshield antenna).
9. Primer applicators.
Additional M aterial Required:
1. Rubber lubricant No. 1051717 (available through
the service parts system).
2. Alcohol for cleaning edge of glass.
3. Adhesive dispensing gun No. J-24811 or a standard
household cartridge type gun reworked as follows:
Fig. 2 D - 1 4 - A p p l y i n g Pressure to W in ds hie ld
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.
4. Commercial type razor knife (for cutting around
edge of glass).
5. Weatherstrip tool set J-2189.
6. Six glass spacers J-22577 (for checking windshield
glass to opening).
Removal
1. Before removing the windshield, mark the location
of the break on the windshield rubber channel and the body.
Protect the paint finish inside of the cab. Mask around the
windshield opening and outside, lay a suitable covering
across the hood and fenders.
2. Remove windshield reveal molding (lock strip) and
reveal molding cap.
3. To free windshield rubber channel of weatherstrip
loosen the lip of the windshield weatherstrip from the
pinchweld flange along the top and at the sides by applying
firm, controlled pressure to the edge of the glass. At the
Fig. 2D-1 5-Assisting W e a th e rs trip over Flange
BODY 2D-7
LIG H T T R U C K SER V IC E M ANUAL