There was a cardinal rule that I followed after doing any work on bank vault timelocks. Put some time on the clocks and try it with the door open. Well, it seems a bank service technician either never heard of that rule or just ignored it. IIRC, he did not properly engage the connection of the TL to the automatic bolt motor so it never released the auto. That bank was one of several branches that were at the time still using cannonball safes with automatics on a daily basis. Way out in the sticks, up on the Canadian border almost into Manitoba.