My question is regarding the retraction/engagement of the bolts. When I removed the back plate, it seemed like it was spring-loaded, and the last screw came out with difficulty. Please excuse my lack of proper terminology; I’m sure I’ll make a hash of describing the various parts. I can see/comprehend how the bolts move in and out, but I’m stumped on how the mechanism works as a whole. I also suspect that not all the parts are present and accounted for.
When I replace the back plate, I assume the “pin” that is welded to the plate should engage the “cam” that rides in the “groove” in the “disc” to which the lock body and bolts attach. Here is the first problem: the back plate pin seems too long, as it contacts the pin on which the cam rides before the backing plate seats flush with the lid/door. Is the cam pin supposed to be spring-loaded?
Second problem, which is related to the first: once the lock is opened, I don’t understand the manner in which the “cam” should retract, allowing the plate to rotate, thus allowing the bolts to retract. Am I making any sense? One thing I noticed that leads me to believe there are missing parts is that there is a hole drilled at the end of the backing plate pin to accept a cotter pin or some such. Am I perhaps missing an additional spring/plunger/cam? One other thing I don’t understand is that the “cam” has a flat machined on the end. Its purpose is not readily apparent, but if there are parts I don’t have, that makes sense.
Other than the fact that I cannot get the bolts to retract without intervention, the safe is in lovely condition. The inner door is missing, but without the 2 keys, it’s not much good to me anyway. I have searched the Interwebz for a drawing of this mechanism/assembly, but came up dry. I suppose that’s not surprising given the nature of a safe’s purpose...
Any assistance you can render to help me understand this mechanism and/or source missing bits will be greatly appreciated. I hope I’m not asking too many questions, or the wrong ones. I’m just trying to get this thing working.






Thanks in advance!!