GMC 1982 Light Duty Truck Service Manual page 200

2D-38 BODY
Front End
Windshield W i p e r s .........................................................2D-38
Cowl Ventilator Grille ................................................. .2D-39
Side Ventilator V a l v e ................................................... .2D-39
R ear View M i r r o r .......................................................... 2D-39
Body Glass
Windshield Glass ...........................................................2D-40
Swingout G l a s s .............................................................. 2D-44
Front Door
A d j u s t m e n t s ....................................................................2D-44
H i n g e s .............................................................................. 2D-45
W e a th e r s tr ip ....................................................................2D-45
V entilator......................................................................... 2D-46
Window R e g u l a t o r ........................................................ 2D-47
L ocks, Handles, R o d s ................................................. 2D-48
Sliding Side D o o r ..............................................................
D e s c r i p t i o n ..................................................................... 2D-51
W IN DSHIELD WIPERS
Windshield wiper units on all models are of the two-
speed electric type. A single wiper motor unit, mounted to
dash panel at top and to left of engine cover inside cab,
powers both wiper blades. The wiper blade operating link
rods and pivot mountings on these models are located in the
outside air inlet plenum chamber.
Arm Adjustment
To adjust sweep of blades turn on wipers, then note
sweep of arms. If necessary, remove one or both arms as
follows:
G MODELS
INDEX
A d j u s t m e n t s .................................................................. ..2D-51
Strikers ......................................................................... ..2D-51
Front L a t c h .................................................................. ..2D-53
R ear Latch .................................................................. ..2D-54
U p per Rear Hinge ..................................................... ..2D-54
R ear Door
H i n g e ..................................................................................2D-56
Rem ote Control ..............................................................2D-56
L atches and R o d s ............................................................2D-57
A d j u s t m e n t s .................................................................. ..2D-57
Seats
Drivers Seat .................................................................. ..2D-58
Passenger S e a t .............................................................. ..2D-58
R ear S e a t s ....................................................................... ..2D-59
R oof Vent ....................................................................... ..2D-59
Seat Belts ....................................................................... ..2D-59
Decal Applique Procedure ............................................ ..2D-59
Adhesive Body Side M o l d i n g s ........................................2D-59
FRONT END
Pull outer end of arm away from glass which will trip
lock spring at base of arm and release spring from undercut
of pivot shaft. While holding arm in this position, pull
outward on cap section at base of arm to remove arm. Arm
can be reinstalled in any one of several positions due to
serrations on pivot shaft and in arm cap. See figure 2D-95.
WIPER ARM PIVOT SHAFTS AND LINK ROD-FIG.
2D-96
Removal
1. Remove windshield wiper arm s from pivot shafts.
Procedure for removing arms is explained previously
under "A rm Adjustments."
2. Remove screws which attach outside air cowl ventilator
grille to cowl. Carefully remove grille from cowl.
3. At center of cowl, remove two attaching nuts which
attach link rod to motor drive. Disengage link rods from
pins.
4. Remove screws which attach each arm transmission
pivot shaft assembly to cowl. Remove pivot shaft
assembly with link rod from plenum chamber.
Installation
1. Place pivot shaft assembly with link rod into position at
cowl bracket. Secure assembly to bracket with two
screws.
2. A ttach end of link rod to motor drive and arm. Secure
rod with the two attaching nuts.
3. Install outside air cowl ventilator grille to top of cowl.
4. Before installing wiper arm s, operate wiper motor
momentarily which should rotate pivot shafts to park
position. Install arms.