Sash Spring Balancer (Marvin?)

A handy person from Ridgewood, NJ says:
January 26, 2017
I tried to drill and reattach the pulley to the spring but despite using hardened steel it just bent and disconnected during install. I am looking for 2 of these units.
User submitted photos of a window balance.
Profile picture of Paul
Paul from SWISCO responded:
February 1, 2017
I'm afraid the pulley is not meant to be repaired. If yours is broken, you should just replace the entire balance. See our Series 751 channel balance, this may be what you want.
27" Series 751 Channel Balance
27" Series 751 Channel Balance
S751-27
$11.63
Short S-Clip
Short S-Clip
19-029
$0.65
Long S-Clip
Long S-Clip
19-030
$0.70
Balance knife lock Shoe
Balance knife lock Shoe
15-014
$1.09
How to install a ribbed tilt channel balance with knife lock shoe
How to install a ribbed tilt channel balance with knife lock shoe
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Classifying Channel Balance Fittings
Classifying Channel Balance Fittings
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