SWISCO - The Replacement Hardware Authority

Window balances and pin

A home owner from New Jersey says:
Don't know the brand of windows. They were installed approx. 25 years ago. All custom made. I need at least a dozen sets of the attached balances. Also, the pins at the bottom of the window need to be replaced. A pic is also attached.
User submitted photos of a coil balance.
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Tom from SWISCO responded:
It looks like you have the 15-087 shoe and 15-086 housing. Compare them to your hardware and let me know how they compare. If they're a match, you should also see our Series 180 coil spring balance.

I'm not sure about the pivot bar. Could I see a few pictures of it removed from the sash? I'd like to see a version that is as undamaged as possible.
A handy person from New Jersey says:
How do I know what coil to get?
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Tom from SWISCO responded:
There should be a number printed on your own coil spring that you can cross-reference.
A quick learner from New Jersey says:
Do the coils differ from one window size to another? The reason I'm asking is that it would be easy on me if I could just order one size for all.
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Paul from SWISCO responded:
It depends on what the sashes weigh. If they all weigh the same then I don't see any reason why they wouldn't work.
A quick learner from New Jersey says:
Maybe my best bet is to order the lower weight for the smaller windows and medium weight (5 or 6lb for the larger windows.
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Tom from SWISCO responded:
I recommend weighing the windows just in case. These balance systems are very delicate. If the springs are too strong or too weak by even a small degree, they will not work correctly.
A quick learner from New Jersey says:
If you look at the pic of the pivot bar, there are two screws. Am I right to assume that I need to take both out to remove the pivot bar? If this is the case, it's not easy. The inside one is corroded and I may have to drill it out.
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Tom from SWISCO responded:
There is a good chance that second screw holds the pivot bar, yes, but I could be wrong. Unscrew the first one and see if it comes out. If not, then you probably have to remove the second one as well.
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