TRUCK SERVICE MANUAL
BODIES AND CABS
Working through door access opening pry lock
retainer from lock cylinder assembly (Fig. 25) with a
small pry bar or screwdriver.
Rotate locks cylinder assembly slightly and remove
To install door lock cylinder assembly, reverse foregoing
The instrument panel mounted key switch and the lock
cylinder in the door are coded so that one key operates both.
Code number is stamped on key switch body just back of cap
nut. Door lock cylinder assembly does not have a code
number stamped on body since this cylinder is coded to the
To locate code number on key switch, remove key switch
mounting cap nut and detach key switch from instrument
The key switch cylinder can be replaced providing the
regular key is used.
To remove key switch cylinder from switch body, place
key in switch cylinder and insert a piece of stiff wire or rod 1.5
mm (1/16") dia. in the small hole behind cap nut in switch
body. Turn key to left (accessory position) and press the
cylinder retainer down with the wire. The switch cylinder can
then be pulled out of switch body.
To install a new switch cylinder, simply push cylinder into
switch body and turn to right ("ON" position) until the cylinder
retainer snaps into place.
Door lock cylinder replacement is by the complete
assembly. Lock cylinder itself (tumbler unit) is not removable.
If door lock replacement is required, lock cylinder assemblies
should be replaced in pairs.
If a replacement of key switch cylinder is necessary and
the operator wants to use the original key, the tumblers on the
new switch cylinder can be coded accordingly.
This is accomplished by inserting original key in new
cylinder (cylinder removed from body) and filing off the
tumblers that protrude from cylinder. When making this
change, be sure no burrs are left on tumblers and all filings
are blown out with air. Apply a small quantity of powdered
graphite to tumblers and reinsert cylinder in key switch body.
If keys are lost, switch cylinder must be drilled
out using a 7.9 mm (5/16") drill, 12.7-19 mm
(1/2-3/4") deep. This will permit tumblers to
drop out and free lock.
DOOR WEATHER SEAL
A one piece rubber weatherseal is secured to cab door
flange with plastic fasteners and provides a weather-tight seal
around door when door is closed.
Pry up old weather seal at fastener locations and remove
complete seal from cab door flange.
Obtain new seal.
Be sure all old fasteners have been removed and
door flange is free of dirt.
Place new weather seal into place on door flange and
align fasteners over mounting holes.
Apply pressure to each fastener to secure weatherseal.
DOOR STRIKER PIN
Door striker pin (Fig. 26) mounted on lock pillar provides
for positive engagement with the door latch assembly (Fig.
20). Striker pin removal and installation requires a special
driver tool. Enlarged mounting hole in lock pillar permits
For complete details on striker pin adjustment, see "CAB
CTS-2714 Page 17
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