'69: Remove steering wheel. Pull turn signal switch up far enough to allow access to lock cylinder spring latch slot. Remove lock cylinder in RUN position by inserting a thin tool into the slot next to the switch mounting screw boss (right hand slot) and depress spring latch at bottom of slot, which releases lock and remove lock by pulling out of housing. Note: if lock cylinder has never been removed before, the slot will be covered by casting flash which can be broken with the removal tool.
Installation: Hold lock cylinder sleeve and rotate knob clockwise against stop when viewed from key end. Insert cylinder into housing bore with key on lock cylinder sleeve aligned to keyway in housing. Push into abutment of cylinder and lock sector. Rotate lock knob counterclockwise. Maintaining a light push inward on lock sector until drive section of lock cylinder mates with sector. Push in until spring latch pops into groove and lock cylinder is secured into housing. Check freedom of cylinder in housing. There must be a free spring return from start to run.
Install turn signal switch. Install steering wheel.