The lock cylinder is located on the upper right-hand side of the steering column and should only be removed in the 'RUN' position to avoid damaging the warning buzzer switch. Begin by removing the
Steering Wheel and directional signal switch, ensuring the signal switch is pushed rearwards enough to slip over the end of the shaft without pulling the harness out of the column. Insert a thin blade into the slot in the
Turn Signal Switch housing to break the housing flash loose while depressing the spring latch at the lower end of the lock cylinder, then withdraw the lock cylinder. The lock cylinder cannot be dismantled; a new one, coded to accept the original key, must be installed in the original cylinder sleeve after releasing the cylinder to sleeve staking. To assemble the new lock cylinder, insert the ignition key partway into the lock, place the wave washer and anti-theft ring onto the lower end, and ensure the plastic keeper in the sleeve protrudes. Align the lock bolt and anti-theft washer tab with the sleeve slot, push the lock cylinder fully onto the sleeve, insert the ignition key fully, and rotate the cylinder clockwise before rotating it counterclockwise to "LOCK." Secure the lock assembly in a vise protected with wood or cloth, install the adaptor ring onto the lower end of the cylinder, ensuring the finger of the adaptor is located at the step in the sleeve, and tap the adaptor onto the cylinder until it reaches the bottom of the cylinder flats, projecting about 4 inches above the adaptor. Stake the lock cylinder over the adaptor ring in four positions just outboard of the four dimples. To install the new lock cylinder/sleeve assembly, hold the sleeve and rotate the lock clockwise against the stop, insert the assembly into the housing aligning the key with the housing key way, and use a 0.070-inch diameter drill between the lock bezel and housing while rotating the cylinder counterclockwise until the drive section mates with the sector. Press in the lock cylinder until the snap-ring engages in the grooves, securing the cylinder in the housing, then remove the drill and check the lock action before installing the turn signal switch and steering wheel. For models from 1979 to 1980, the lock cylinder should also be removed in the 'RUN' position, followed by the removal of the steering wheel and turn signal switch without completely detaching the switch. The ignition key warning switch should be removed, and the lock retaining screw taken out with a magnetized screwdriver, ensuring it does not drop into the column. Finally, pull the lock cylinder out of the side of the steering column, rotate the new lock cylinder set to align the key with the key way in the housing, push it all the way in, and install the retaining screw.