I have been having issues with my apartment door not opening when I turn the knob. The knob is very loose and as a result, it is able to move left and right. Although functionally, turning to the right is the only way that latch bolt moves inward to the faceplate, allowing the door to open. Typically the door works, but is very finicky. Today it is simply not working. The latch bolt is stuck and is not moving inward to the faceplate.
If I am outside of the door, I can use the key (Mul-T-Lock 006C) and turn it to the right (as in the video) which allows the latch bolt to move inward. Once I do this, I can go back to the inside door knob and turn it, and the latch bolt works properly.
However, upon closing the door fully (from the inside), I now cannot get the door knob to trigger the latch bolt at all to open up the door, meaning I am locked in my apartment and cannot get out unless someone from the outside opens with the key (see video). You can also notice in the video that on the lock body, where the mounting spring on the knob inserts, it is quite loose. Not sure if this is an issue. I am not using the deadbolt at all, so this is only an issue with knob trigger latch bolt.
My question is, do I need to replace the whole door entry knob or is there a way to fix this?
I used certain terms above that seem to differ from diagrams, so I've attached the diagram I was looking at for clarity of parts I'm referencing.
Thank you in advance for any help!