Chevrolet 70 1969 Series, Shop Manual

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CAB A N D BO DY M O U N T IN G S 1-3
b. To exposed body parts, apply surfacer and
paint in accordance with standard practice.
PAINTING N E W PARTS
New replacement parts should be thoroughly
cleaned and painted, as outlined previously under
"Repainting," alter installation in vehicle. In addi­
tion, hidden surfaces of panels should be cleaned
and coated with one heavy coat of sheet-metal
deadener.
IMPORTANT
Calcium chloride and other salts,
road tar, excretion from insects ("tree
sap"), chemicals from factory chim­
neys and other foreign matter may
permanently damage the finish of the
trucks. Frequent, regular washing and
a thorough cleaning after exposure is
recommended to prevent damage by
these substances.
WINDSHIELD GLASS REPLACEMENT
CAUTION
A L W A Y S W E A R H E A V Y G L O V E S
T O P R E V E N T POSSIBLE IN JU RY
W H E N H A N D L IN G G L A SS.
N O T E : When replacing a cracked windshield,
resulting from causes other than from flying ob­
jects, it is very important that the cause of break­
age be determined and the condition corrected.
If cracks in glass extend to outer edge of
glass, mark cab or cowl with chalk at these points
so that weatherstrip flange in cab opening can be
examined later for possible distortion.
R E M O V A L
N O T E : Windshield glass is retained in cab
opening with insert-type rubber seal as illustrated
in figure 1. A single windshield glass is used in
the conventional 70 series truck whereas two
glass sections are used on all other models.
1. Pry end of insert out of rubber seal with a
pointed tool; pull insert completely out of seal.
2. With aid of an assistant to hold glass out­
side cab, push glass forward from inside cab.
IN SPECTION
1. Check for the following conditions at the
previously marked point of fracture at cab opening:
a. Chipped edges on glass.
b. Irregularities in body opening.
c. Irregularities in rubber channel.
GLASS-TO-OPENING C L E A R A N C E C H E C K
(T IL T CAB)
Before installing new glass, check glass open­
ing for proper clearance, using five special spacer
blocks (J-9316) as shown in figure 2. With the aid
of an assistant, place blocks around perimeter of
new glass, two at bottom and top and one at outer
side of opening. A 5/16 to 3/8 inch clearance should
exist between glass and opening flange. Insert
blocks into gap, then rotate blocks perpendicular
to flange surfaces. If all blocks cannot be installed,
rework metal flange or grind off edge of glass at
the side where block or blocks could not be in­
stalled.
If glass clearance is found too small and is to
be ground off, place a strip of tape on a line where
glass is to be removed. Grind up to edge of tape.
If glass clearance is found too large, braze a
continuous piece of 1/8 inch diameter wire to edge
of cab windshield glass opening flange. This will
provide a closer glass and seal fit.
N O T E : Add build-up to flange where neces­
sary. Usually the building up to only one side and
one-half way around one corner will provide proper
glass and seal fit. Taper off ends of build-up to
conform to edge of glass, otherwise glass breakage
may occur, originating at a point adjacent to the
end of flange build-up.
IN S T A L L A T IO N
1. Reposition rubber seal on cab opening
flange. Raise new glass to outside of seal, then
with hook end of installer tool (J-2189) in glass
groove of seal as shown in figure 1, move tool
around glass to force outer lip of seal over edge
of glass.
2. Thread end of rubber insert through handle
and loop of installer tool (fig. 1). Push tool loop
and end of insert into groove of seal. Feed in rub­
ber insert, while proceeding around window. Use
a hitching movement of tool to avoid elongating
insert. If new insert is being used, cut off insert
allowing sufficient overlap for a tight joint; then
butt into groove.
CHEVROLET SERIES 70 -80 H EAVY DUTY TRUCK SH O P M A N U A L