Diebold 177-55 or 180-55?
I'm trying to determine which lock is installed in this particular safe. According to the books I have (and some advice from a member here), the safe is an old Diebold lug door safe, and it came with one of two locks installed. For a couple of years it came with the 177-55, which is a group two lock. But the majority were shipped with a 180-55, which I believe is a MP lock. You are supposed to be able to tell if the 180-55 is installed by spinning the dial and hearing a faint click when the zero passes the index. Also, the changing index is about 5 1/3 increments to the right of the dialing index on the dial ring.
The changing index matches what I would expect if it were the 180, but I don't feel or hear a click as the dial passes zero. I DO hear the normal clicks you would expect as the drive cam passes under the nose of the fence. I can also feel very subtle contact points at about 96 1/2 and 7.
The contact points are very faint, fainter than I've felt. What I'm wondering is if the 180 lock would have contact points, even though it is an MP lock. I'm not familiar with these locks and the pictures I've seen don't reveal much. And I've taken this thing for a spin AWL and AWR and found nothing of note. Part of that could be me adjusting to the very faint contact points.
If anyone has any info or advice, that would be great.
Thanks!
-Mike