Chevrolet 1980 Light Duty Truck Service Manual page 138

2D -14 BODY
Fig. 2D-3 3 ~ R e m ov ing Door Glass
5. Install regulator by reversing above steps. Lubricate
regulator gear with lubriplate or equivalent.
W IN D O W REGULATOR - POWER - CK
MODELS
In the case that window will not operate, check
electrical connections first. Figure 2D-34 illustrates location
of junctions, switch, relay and circuit breaker.
Replacement
CAUTION: Electrical connectors must be
removed from w indow lift motor before
performing any
regulator, or personal injury could occur.
Figure 2D -35 illustrates
regulator on door and wiring.
1. Raise glass to full up position and tape to door frame
using cloth body tape.
Fig. 2 D -34 --P ow e r W i n d o w Switch, Relay and Breaker
Assembly
NOTCH
operation on the
location of
Fig. 2 D -35 --P o w e r W i n d o w Regulator, M otor and Connector
2. Disconnect battery ground cable.
3. Remove door trim panel as previously outlined.
4. Remove remote control bolts and lay control
assembly aside for access.
5. Remove regulator to door panel attaching screws.
6. Disconnect harness from regulator.
7. Slide regulator assembly 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).
8. Remove regulator assembly through access hole in
door.
CAUTIO N: Step 9 must be performed
w hen regulator is removed from door. The
regulator lift arms are under tension from
the counterbalance spring and can cause
serious injury if the motor is removed
w ith o u t locking
position.
9. Drill a hole through the regulator sector gear and
back plate. DO NOT drill hole closer than 1/2" (12.7mm)
to edge of sector gear or back plate. Install a pan head sheet
metal tapping screw (No. 10 - 12 x 3/4) in drilled hole to
sector gear in position.
lock
10. Remove motor to regulator attaching screws.
11. Remove motor from regulator.
12. Prior to installation, lubricate the motor drive gear
and regulator sector teeth. The lubrication used must be
cold weather approved to a minimum of minus 20°
Fahrenheit (*29°C).
13. Install regulator motor to regulator. Make sure the
motor pinion gear teeth mesh properly with the sector gear
teeth before installing the three motor attaching screws.
the sector gear in
LIG H T T R U C K S E R V IC E M AN UAL