Paul from SWISCO responded:
July 26, 2017
Sometimes, when the window is not used, the grease inside the spiral balance dries out. Even age will cause a spiral balance to fail, in addition to the pivot shoe failing. Twenty years is pretty old for window parts that are exposed to temperature change and UV light from the sun.
Regarding our 15-118 (which was suggested by the manufacturer) having too much plastic, it isn't plastic. It is made of nylon, with other resins added for strength and durability. The manufacturer is just north of you in Rochester, so they are accustomed to extreme weather. As for our 15-129 and 15-178, I'm not sure your pivot bar will fit in the center cam. I would need to see your bar with dimensions to tell. |