Bob from SWISCO responded:
September 1, 2023
Thanks for posting. Good question. In a spiral balance for a tilt window, you typically see two pins because the lower pin is what you attach the charging tool to; the upper pin connects into the 'crown' of the pivot shoe, and the lower pin remains visible for access when you want to remove the spiral balance. The video below demonstrates this. Let me know if you have further questions. |