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GENERAL INFORMATION
OA-3
A KEY
FOR IGNITION LOCK ONLY
B KEY
FOR REAR COMPARTMENT,
DOOR, TAILGATE, HATCHBACK
AND GLOVE COMPARTMENT LOCKS,
2878
-
Fig. OA-3 Key Blanks
LOCK
I
ANCHOR
WASHER
ADAPTOR STOP
I
WASHER
ASSEMBLY
4252
I
Fig. OA-4 Exploded View of Lock Cylinder
Fig. OA-5 Depressing Lock Cylinder Retaining Pin
d. It will be necessary to fashion a pick and insert this
behind the cylinder wall to depress the brass pin.
e. While holding pin depressed, turn key and lock
slightly and pull lock assembly out of cylinder approximately
1/8".
f. Pull key out of lock assembly approximately two (2)
teeth and, using suitable pick, slide or shake plastic retainer
in end of lock toward pin side of cylinder.
g. Pull key and lock assembly out of cylinder.
h. Pry off tumbler retainer, unscrew springs and remove
tumblers.
i. Retain tumblers and discard lock cylinder.
Coding Side Bar Lock
NOTE: The glove compartment lock uses a snap-in
tumbler cylinder. With this design, the cylinder (less
tumbler and springs) along with precoded tumblers and
springs are serviced. The tumblers may be snapped out
and in again, however, it is recommended that after two
or three times the cylinder should be replaced with new
tumblers since the retention is lessened each time. The
O L D and NEW style cylinders are completely
interchangeable.
Lock kits are available without tumblers, springs or
retainers. Uncoded side bar locks may be coded to match the
keys used on the car by ordering the above parts separately.
Five types of tumblers are used to make the various
combinations and each is coded according to a number, one
(1) through five
( 5 ) ,
stamped on its side. Before the lock
cylinder may be coded, the correct code must be determined.
If the numbered blank in the key head has not been removed,
determine the code by consulting the lock manufacturer's
code book. Should the blank be missing, proceed as follows:
1.
Place the key on the silhouette in Fig. OA-6, aligning
the key with the outline as accurately as possible.
4998
POSITION
LEVELS
Fig. OA-6 Key Coding Diagram
2. Starting at the base of the key blade, determine the
lowest level visible in position No. 1.
3. Determine the lowest visible level for the remaining
five positions. As each tumbler level is determined, write that
number in the blank space above the position numbers.
After the key code has been determined, the correct
tumblers should be installed as follows:
1. Beginning with slot next to head of cylinder (number
one position) install tumblers in slots in sequence determined
from key code.
2. Insert spring in each round cavity of each tumbler lock
between slots (Figs. OA-7 and OA-8).
C AUT I 0 N: Do not pull springs apart; unscrew
them.
3. Install spring retainer over springs, with ends inserted
in slots, and hold in place.
4. Check by inserting cut key. Side bar will drop in place
when key is inserted and correct tumblers have been installed.
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