Chevrolet LIGHT DUTY TRUCK (SERIES 10-35) Service Manual page 174

Fig. 2D -10 9--V en tila to r Assem bly
3. Remove trim panel and water shields.
4. Remove rear window run channel screws.
5. Slide door window glass rearward away from
ventilator.
. Remove three screws at the upper front of the door
6
and lower forward channel screw, as shown in figure 2D-
109.
7. Pull the upper portion of the ventilator rearward.
8 . Turn the vent assembly 90° and carefully remove by
guiding up and out, as shown in figure 2D-110.
Fig. 2D -1 1 0 - R e m o v i n g V e n t i l a t o r
Ventilator Glass Replacement
1 . Using an oil can or similar means, squirt prepsol on
the glass filler all around the glass channel or frame to soften
the old seal. When the seal has softened, remove the glass
from the channel.
2. Thoroughly clean the inside of the glass channel with
sandpaper, removing all rust, etc.
3. Using new glass channel filler, cut the piece to be
installed two inches longer than necessary for the channel.
Place this piece of filler (soapstoned side of filler away from
glass) evenly over the edge of the glass which will fit in the
channel. The extra filler extending beyond the rear edge of
the glass should be pinched together to hold it in place
during glass installation.
One side of this filler (the outside of the roll) is
soapstoned. This is the side which goes into the metal
channel.
4. Brush the inside of the metal glass channel freely
with ordinary engine oil. This will enable the glass and filler
to slide freely into the channel.
Glass should be installed so that rear edge is parallel
to the division post. Allow full cure before water testing.
Installation
Replace the door window glass and regulate to the full
down position before installing the door ventilator
assembly.
1. Lower the ventilator assembly into the door frame.
Center into position.
2. Make certain the rubber lip is positioned before
tightening screws.
3. Slide door glass forward engaging glass in vent
channel.
4. Reinstall all screws and tighten.
5. Install and tighten the three screws at the upper front
of the door.
Adjustment
1. Adjust the ventilator adjusting nut by turning
clockwise to increase operating tension, as shown in figure
2D-111.
2. After making adjustment bend tabs over the hex nut.
3. Install trim panel.
4. Install door and window regulator handles.
DOOR W IN D O W ASSEMBLY
Replacement
1 . Completely lower glass to bottom of door.
2. Remove door arm rest, trim pad and water shields.
3. Mask or cover upper portion of door window frame.
4. Remove ventilator assembly as previously outlined.
5. Raise window until regulator arms are level with
access hole in door.
. Slide glass forward until front roller is in line with
6
notch in sash channel. Disengage roller from channel. See
figure 2D-112.
7. Push window forward and tilt front portion of
window up until rear roller is disengaged.
8 . Put window assembly in normal position (level) and
raise straight up and out.
9. Reverse above procedure for installation.
BODY 2D-45
LIGHT T R U CK SER V ICE MANUAL