(107) Yale 323/324 auxiliary mortise deadbolt teardown
Channel: Nite 0wl
Date: 2018-08-09

Like almost everyone else Yale discontinued their cast iron bodied mortice locks years ago but in the decades they were making them those locks found their way into all sorts of places. This style of lock was particularly popular in institutional environments like schools and hospitals where tamper resistance was a priority.
This particular model has two main points of interest, the first is the removable thumb turn adapter (another lock design element that has fallen out of use), the second is the rather simple approach to what is now called 'Classroom Function' operation. Classroom function locks have historically been locks that can be locked or unlocked from the outside with a key while the inside has a thumbturn or knob that will only unlock the door. This particular nomenclature will probably be changed in the near future as schools increasingly adopt new models for their physical security in response to world events.

Like other locks from this era the mechanism is surprisingly simple and very robust while still being very easy to repair.