How to Change Lock Tumblers on Deadbolts
- 1). Unscrew and remove the trim screws with a Philips screwdriver. Twist the thumb turn counterclockwise and remove it if applicable. Remove the lock trim.
- 2). Unscrew and remove the retaining screw inside the lock mechanism with a Philips screwdriver. Remove the keyed side of the lock and replace it with the new assembly.
- 3). Replace the retaining screw, lock trim and screws, and the thumb turn.
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