Oh, by the way, this hammer was covered with dirt rust and oil! I had taken a wire wheel on a 4-1/2" grinder and cleaned the frame when I tore it down a few years ago.
Pic 1: The first thing that needeed to be done was to get the pivot shaft for the foot treadle freed up. The years sitting in the dirt and crud in the blacksmith shop had caused the shaft to "grow" together with the frame. In preparation for getting it out, I ran a 1/2"-13 die across the threads to clean them up and make them fit "modern" nuts. Then I drilled a hole through the frame and into the shaft a little. This will allow me to get oil into the center of the shaft and hole.
Pic 2: I gathered up a "coupling nut"(long nut) with a bolt screwed half way through. This will be screwed on the end of the stud to give a place to hammer on without mushrooming the end of the shaft. also a short, heavy tube large enough to clear the body of the shaft and a couple heavy washers and a 1/2" standard nut.
Pic 3: We put the pieces together on the shaft and tighten the nut as tight as we dare! Then spray liberal amounts of penetrating oil at both ends of the shaft and in the drilled hole.
Pic 4: Heat the frame with the torch till it shows some red color in the shade. Tighten the nut on the end to put pressure on the shaft and hit the bolt w/coupling nut with the hammer. Spray more oil. Repeat. I heated this one up several times and then let it cool overnight and repeated the sequence the next night. Luckily it came out with just a couple of cycles!
Pic 5: Getting the shaft out of the frame was the main objective, saving the shaft was just a bonus!
Pic 6: I tapped the hole drilled earlier so I could put a grease zerk to keep the pivot lubricated.
Pic 7: First step finished!
