Chevrolet 1980 Light Duty Truck Service Manual page 137

Fig. 2 D-29~Rem oving Ventilator Assembly
Installation
1. Lower the ventilator assembly into the door frame.
2. Make certain the rubber lip is positioned inside the
inner and outer panel before tightening screws.
3. Reinstall all screws and tighten.
4. Install and tighten the three screws at the upper
front of the door.
A djustm ent
1. Adjust the ventilator by placing wrench on
adjusting nut thru access hole and turning vent w indow
to the desired tension. See figure 2D-30.
2. After making adjustment bend tabs over the hex nut
on base of assembly. See figure 2D-31.
3. Install arm rest screws and trim panel.
4. Install window regulator handle.
DOOR W IN D O W ASSEMBLY--FIG. 2D-32
Replacement
1. Completely lower glass to bottom of door.
2. Remove door arm rest and trim pad as outlined in
this section.
---- mm----------M ___t o
HOLDING A WRENCH
ON THE HEX NUT
Fig. 2 D -3 0 -A d ju s tin g Tension
TO ADJUST TENSION,
TURN THE VENT WHILE
Fig, 2D-31--Bend Tabs Over Hex Nut
3. Mask or cover upper portion of door window frame.
Remove ventilator assembly as previously outlined.
4. Slide glass forward until front roller is in line with
notch in sash channel. Disengage roller from channel.
5. Push window forward and tilt front portion of
window up until rear roller is disengaged. See figure 2D-33.
6. Put window assembly in normal position (level) and
raise straight up and out.
7. Reverse above procedure for installation.
W IN D O W REG ULATO R-M ANUA L-FIG . 2D -32
Replacement
1. Raise window and tape glass in full up position
using cloth body tape.
2. Remove trim panel as outlined previously.
3. Remove screws attaching regulator to door inner
panel.
4. Remove regulator by sliding regulator rearward,
disengaging rollers from sash channel.
A notch is provided in the sash channel to allow
disengagement of the forward roller on the window
regulator (Fig. 2D-32).
NOTCH
SASH
CHANNEL
Fig. 2D -32 --D o o r W in d o w and R egulator
BODY 2D -13
BEND TAB OVER
HEX NUT
LIG H T T R U C K SER V ICE M ANUAL