Tom from SWISCO responded:
May 7, 2014
First, look at our 15-087 shoe. Does this match your own? If so, I recommend that you consider our Series 180 coil springs to replace your own. It looks and sounds like your existing springs are shot.
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Paul from SWISCO responded:
May 8, 2014
If your coil spring doesn't have holes, it probably broke off. There isn't any other way to make sure this spring hooks onto the bracket. See the diagram below to see what I mean.
Detail of 15-086
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Paul from SWISCO responded:
May 9, 2014
I think your window once had a coil spring inside a 15-086 housing, which was installed on top of the 15-087. In your current window, you just have the coil springs sitting by themselves on top of the 15-087 without a housing, which is now how it's supposed to be. I believe someone tried to repair these windows in the past but did not replace the upper housing.
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