Chevrolet 70 1969 Series, Shop Manual

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C AB A N D BO DY M O U N T IN G S 1-24
CLIP EN G A G ED CLIP D ISEN G A G ED
T -2 5 49
Figure 2 7 — Disengaging Door Pull Rod Fasteners
two inches longer than required. Position filler
(soapstoned side away from glass) over that part
of glass which will be inserted in frame. Punch to­
gether extra projecting length of filler at each end
to retain filler in place during installation.
4. Brush inner channel of glass frame with
light engine oil. Press glass and filler into frame
until firmly seated.
N O T E : Purpose of engine oil is two-fold; as a
lubricant to facilitate assembly, and to soften and
expand filler to create a water-tight seal. How­
ever, latter effect requires 24 hours; therefore,
water-leak test should not be made before this
time has elapsed.
5. Trim off excess filler material around
frame and at end of frame.
DOOR VENT W IN D O W TENSION
ADJUSTMENT
Vent windows are of friction type having a
theft-resistant latch. Friction mechanism consists
primarily of a coil spring mounted on vent window
lower pivot, which exerts frictional force against
mounting lower support.
If friction mechanism is adjusted too tight, it
will be difficult to open or close vent. Too loose
an adjustment will result in a fluttering vent or
one having a tendency to close with wind pressure.
If necessary to change vent friction, perform
procedures as follows:
1. Remove access panel from door inner panel
as directed previously under "Door Access Panel
Replacement." Panel is retained to door with rub­
ber insert-type retainer.
2. Reaching up through access opening in door,
as shown in figure 22, turn adjustment nut with a
9/ 16-inch speed wrench to obtain five to seven
pounds torque, while moving vent window from a
ten degree open position to a full-open position.
Use either a push or pull type spring scale, posi­
tioned at rear edge of vent glass. Turning adjust­
ment nut clockwise increases operating tension.
Figure 2 2 — Adjusting Vent W in d o w Tension
Figure 23—Venf Window
Attachment
CH fV R O U 'T 5 P R K 70-80 H EAVY DUTY TRUCK SH O P M A N U A L