Repairing spring loaded windows

A home owner from Crystal City, Missouri says:
May 25, 2011
Can my double hung windows be fixed if the cord has broken on the balance knife lock shoe? I have this shoe #15-014.
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Donna from SWISCO responded:
May 25, 2011
Thank you for posting.

Yes, you will need to replace the window balances. The 15-014 is often used in Series 751 Channel Balances.
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