When I needed to replace a set screw on one of the Hammer head toggle link pins I wanted to make the job as quick and easy as possible. I placed a block under the hammer head to keep it in position and slid a piece of 1” threaded rod through the opening in the cross head just above the toggle link pins. A washer and hex nut was placed on each end and tightened to take all the force off the hammer head pins. I took off the spring guard and the pin was easily removed after loosening the two set screws. After reworking the pocket for the set screw it was easy to slip the pin back in and tighten the set screws.
After removing the thread rod gadget and the hammer head support I was back in business in about 15 minutes.