Examine the piece of FR322 lock. Measure the length of the lock and the length of the open space where the lock is inserted.
Visit the a lock vendor website to find a new lock core that will fit in your piece of furniture. Purchase the appropriate lock core and ship to your location.
Remove the current damaged or non-functioning lock. To do so, place the drill bit into the each screw and spin counterclockwise to remove. Extract the old lock and dispose.
Replace the old lock with the new core by inserting it into the open slot. Drill the screws clockwise back into place. Check to see if the lock works properly.