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384-50
1977 PONTlAC SERVICE MANUAL
ANCHOR
V u A S v t Y
ADAPTUR
\TOP
A N ~ I IIArThi
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4252
Fig. 304-1 3 8 Ignition Lock Service Package
1. Lock Cylinder (less tumblers, springs and retainer)
2. Adapter Stop
3. Anti-Rattle Washer
4. Anchor Washer
5. Sleeve Assembly
Tumblers,springs and spring retainer must be purhcased
separately.
The ignition lock service package comes with the lock
cylinder, anti-rattle washer and anchor washer installed into
sleeve. Disassemble and assemble as follows:
1. Turn the lock cylinder to the accessory position, fully
counterclockwise.
2. Depress the brass pin and turn lock cylinder
counterclockwise; cylinder
will
pop
out
of
sleeve
approximately 1/4" (Fig. 3B4- 139).
k t ~ i A 5 F Plh
LOCAT IOZ
I
Fig. 384-139 Depress Brass Pin
3. Tap sleeve lightly on bench with lock snap ring down
to drop warning buzzer cam inboard to clear cylinder sleeve.
Cylinder cannot be removed until this cam is inboard (Fig.
3B4- 140).
4. Remove lock cylinder, anchor washer and wave
washer from sleeve.
5. To determine correct tumbler usage, key coding must
be known. Refer to Body Service Manual
-
Key Code
Diagram. Tumblers are precut and are packaged by number
(Fig. 3B4-141). For example, if key coding is 132542, then
insert a No. 1 tumbler in lock cylinder slot (at key end).
6. Insert remaining tumblers in their correct slots (Fig.
3B4-142). Insert tumbler spring in each slot (on top of
tumblers). Position tumbler spring retainer into position and
MOVE CAM
l NBOAR D
I
Fig. 384-1 4 0 Position Buzzer Cam for Removal
/
PRE-CUT TUMBLERS
Fig. 384-1 4 1 Pre-Cut Tumblers
stake into place as shown in Fig. 3B4-143.
I
CYLINDER
'4256
Fig. 384-1 4 2 Installing Tumblers
7. Install anti-rattle washer and anchor washer, with
tang on anchor washer facing away from anti-rattle washer,
over lock cylinder.
8. With key in lock, install lock cylinder into sleeve.
Align locking bar and anchor washer tang with long slot in
sleeve (Fig. 3B4- 144).
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