I am in the pistolsmithing portion of the pro course and as an exercise I disassembled a Smith model 19-5 I had purchased at a gun show. Before doing so I function tested it, but only while holding it horizontal. After reassembling it, I noticed the cylinder would not rotate when the pistol was held vertically and cycled either single or double action. I disassembled it again and discovered the hand was falling back out of the hand window when the gun was held vertically. Obviously, there has to be a spring that holds the hand in the window. Examining the trigger assembly I noticed a spring held in by another pin (other than the two hand pins) but the spring was not under tension and seemed to serve no purpose. I removed it and tried to install it so it would keep the hand in its window, but can’t figure out how to do so. Am I correct that the hand is held in the window by spring tension? If so, how do you place the spring? Any advice will be appreciated.
OK put the spring back in the trigger like you found it. Then as you install the hand the back of that spring rests on top of the small pin in the hand. The hand pivots on the large pin and the small pin is allowed to move up and down in the groove in the trigger.