Ignition Lock Cylinder Removal And Installation - Jeep 1979 CJ-5 Technical & Service Manual

2J-38
STEElIlf
IGNITION LOCK CYLINDER
The key-operated lock cylinder Is located at the upper
end of the steering column and is mounted in the column
housing or cover. The" lock cylinder is a two-piece assem-
bly and can be removed, disassembled, and repaired or
recoded if necessary.
Conditions Requiring Service
Key Lost—Key Code Number Known
The key code may be converted to a five-digit number
that determines key bitting. This number may be ob-
tained from the catalogues furnished by manufacturers
of key cutting machines or by calling the Jeep zone
office.
Defective ignition Look—Ignition Key Available—No Key Code Number
New lock cylinders are available from service parts
warehouses only as uncoded cylinders without tumblers.
Tumblers are ordered under five different part num-
bers, one for each depth of cut available. Refer to Key
Coding.
Key Lost—Key Code Lost Or Not Known
Contact the servicing dealer and provide the dealer
with the vehicle identification number. The dealer may
have a record of the key codes involved. If not, the key
code numbers assigned to the vehicle may be obtained
from the Jeep zone office.
Lock Cylinder Removal
(1) Disconnect battery negative cable.
(2) Apply protective material to painted areas of
column.
(3) Remove steering wheel.
(4) Remove lock plate cover. Use two screwdrivers
to pry cover out of column.
(5) Compress lock plate and unseat steering shaft
snap ring as follows:
(a) Inspect and identify steering shaft nut
thread-type. Metric shafts have identifying groove in
steering wheel locating splines (fig. 2J-2). American
thread shafts do not have this groove.
(b) If shaft has American threads, use Com-
pressor Tool J-23653, as is, to compress lock plate and
unseat snap ring (fig. 2J-6).
(c) If shaft has metric threads, replace com-
pressor tool standard forcing screw with Metric Forcing
Screw J-23653-4 before installing tool on steering shaft.
WARNING: The lock plate is under strong spring pres-
sure. Do not attempt to remove the steering shaft snap
ring without using the compressor tool.
(6) Remove compressor tool and snap ring. Discard
snap ring.
(7) Remove lock plate, canceling cam, and upper
bearing preload spring.
(8) Remove turn signal lever attaching screw and
remove lever.
(9) Press hazard warning knob inward and turn
knob counterclockwise to remove it.
(10) Disconnect turn signal and Cruise Command
wire harness connectors at base of column.
(11) Remove turn signal switch attaching screws and
move switch aside to provide working clearance. It is not
necessary to remove switch and harness completely.
(12) Insert key in lock cylinder. On manual transmis-
sion columns, place cylinder in On position. On auto-
matic transmission columns, place cylinder in Off-Lock
position.
(13) Compress lock cylinder retaining tab using thin
blade screwdriver and remove lock cylinder from
column.
N O T E : The lock cylinder retaining tab is accessible
through the slot adjacent to the turn signal switch
mounting boss (fig.
2J-9).
If the tab is not visible
through the slot, scrape
m
or knock any casting flash out of
the slot to provide access.
Lock Cylinder Installation
(1) Install lock cylinder as follows: .
(a) Insert key in lock cylinder.
> (b) Hold cylinder sleeve and turn key clockwise
until key stops.
(c) Align lock cylinder retaining tab with key-
way in housing and insert cylinder into column.
(d) Push cylinder inward until it contacts lock
sector. Rotate cylinder to engage it with lock sector, and
push cylinder inward until cylinder retaining tab en-
gages in housing groove.
(2) Align and install turn signal switch in column.
(3) Install and tighten switch attaching screws to 35
inch-pounds (4 N«m) torque.
(4) Install hazard warning knob. Tighten knob to 5
inch-pounds (0.56 N»m) torque.
(5) Install turn signal lever. Tighten lever attaching
screw to 15 inch-pounds (2 N«m) torque.
(6) Install upper bearing preload spring, canceling
cam, and lock plate on steering shaft.
(7) Install replacement steering shaft snap ring on
sleeve of Compressor Tool J-23653 and install tool on
steering shaft (fig. 2J-6).
CAUTION: Identify the steering shaft nut thread-type
before installing the compressor tool. If the shaft has
American threads, use the tool as is. However, if the
shaft has metric threads (fig.
2J-2),
replace the com-
pressor tool standard forcing screw with Metric Forcing
Screw J-23653-Jf, before installing the tool on the shaft.
(8) Compress lock plate with compressor tool and
seat snap ring in steering shaft groove (fig. 2J-6).