GMC 4000 Series Service Manual page 45

Sec. 1
Page 38
CONVENTIONAL CAB
IN S T A L L IN G C Y L IN D E R
cylinder retainer through slot at edge of door to
engage grooves at side of cylinder body. It may be
necessary to drive the retainer into final engage­
ment with a light hammer. Make sure both legs of
retainer are engaged in grooves of lock cylinder.
If one of the retainer legs is not engaged, the re­
tainer flange will not be vertical in door slot.
DOOR INSIDE HANDLES
REPLACEMENT
If removing door inside handle, the handle
position should be marked in relation to door panel
to assure that handle is installed later at the same
operating angle. See figure 18 which shows proper
handle position.
REMOVAL
1. Insert tool (J-9886) between handle flange
and escutcheon plate as shown in figure 18.
2. Force lock spring from grooves in base of
door handle. DO NOT LOSE SPRING. Remove
handle and escutcheon plate.
NOTE: The lower view in figure 18 shows how
the tool engages the clip at underside of handle
when removing.
INSTALLATION
1. Insert lock spring in handle grooves from
direction shown in figure 18.
2. Place the escutcheon plate on handle spindle.
3. If installing door lock release handle, make
sure handle is in position previously marked on
door inner panel. To install either handle, force
G M C S E R V I C E M A N U A L
RETAINER
Figure 17— Door Lock Assem bly Replacement
handle with installed lock spring over spindle until
lock spring becomes fully engaged.
DOOR LOCK AND REMOTE CONTROL
REMOVAL (Fig. 19)
threaded on lock rod.
panel as directed previously under "Door A ccess
Panel Replacement."
directed previously under "Door Inside Handles
Replacement."
mote control to door inner panel. Lower the con­
trol to door access opening, then disengage fasten­
er at pull-rod. Separate rod from control.
outer side of door as directed previously under
"Door Lock Cylinder Replacement."
locking-type screws which attach lock mechanism
to door frame. Lower the lock and attached two
rods out through access opening in door.
INSTALLATION
control in reverse of the "Removal" procedures.
locking-type screws which attach lock mechanism
to door frame. Check for proper operation of in­
stalled lock assembly before attaching access panel
to door.
RETAINER
R E M O V IN G RET A IN ER
MECHANISM REPLACEMENT
1. Remove the door inside lock knob which is
2. Remove the access panel from door inner
3. Remove the door lock inside handle as
4. Remove three screw s which attach the re­
5. Remove the lock cylinder assembly from
6. At rear edge of door, remove three special
Install lock mechanism with rods and remote
IMPORTANT: Be sure to use the three special
SCREWDRIVER