Looking to repair windows in an apartment in nyc

A contractor from NYC, NY says:
June 20, 2022

I am trying to replace the balances and possibly the whole side track assembly of a number of clad wooden replacement windows

The plastic receiver has a patent number that is a swisco product

Thanks for your assistance

Cale 

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Casey from SWISCO responded:
June 22, 2022

Hello,

Take a look and compare the S770-34 channel balance with a 34E strength option to your assembly. As for the pivot shoe, I'd recommend removing it from the jamb liner to compare to the dimensions shown on the 15-129 product page. Thank you!
Pivot Shoe, 9/16" Thick
Pivot Shoe, 9/16" Thick
15-129
$2.50
34" Series 770 Balance
34" Series 770 Balance
S770-34
$13.77
How to replace a tilt-window channel balance.
How to replace a tilt-window channel balance.
VIDEO
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How to Remove a Pivot Shoe (Cutout Method)
How to Remove a Pivot Shoe (Cutout Method)
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How to remove window pivot shoes
How to remove window pivot shoes
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Anatomy of a tilt window
Anatomy of a tilt window
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