GMC 4000 Series Service Manual page 46

HANDLE P O SIT IO N M A RK
CLIP REM O VER
(TOOL J-9886)
R E M O V I N G H A N D L E CLIP
CLIP REM OVER
T O O L
9l m W S K B m .
PR O P ER T O O L -T O -C L IP E N G A G E M E N T
Figure 18— Door Inside H andle Replacement
DOOR VENT GLASS REPLACEMENT
1. Squirt gasoline on rubber filler all around
glass frame to soften old filler. When seal softens
sufficiently, pull glass and old filler from glass
channel.
2. Thoroughly clean the inside of the glass
channel with sandpaper to remove all rust and
foreign matter.
NOTE: Ventilator glass rubber filler is sup­
plied in two thicknesses - 0.067" and 0.080" for
select fit between glass and channel.
3. Cut new piece of glass channel rubber filler
two inches longer than required. Position filler
(soapstoned side away from glass) over that part
G M C S E R V I C E M A N U A L
ESC U T C H E O N PLATE
T-2548
CONVENTIONAL CAB
THREADED
LO C KIN G KN O B
LOCKING ROD
LOCK M EC H A N ISM
ATTACHING SCREW S
L. LO C KIN G TYPE).
Figure 19— Door Lock M e ch a n ism and Rods
of glass which will be inserted in frame. Punch to­
gether projecting length of filler at each end to
retain filler in place during installation.
4. Brush inner channel of glass frame with
soap solution. P ress glass and filler into frame
until firmly seated. Purpose of soap solution is to
facilitate assem bly. DO NOT USE GREASE OR
OIL.
5. Trim off excess filler material around
frame and at end of frame.
DOOR VENT W IN D O W TENSION
REPLACEMENT
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 A ccess Panel
Replacement." Panel is retained to door with rub­
ber insert-type retainer.
2. Reaching up through access opening in door,
Sec. 1
Page 39
REMOTE CONTROL
ATTACHING SCREW S
PULL ROD