window balancer assembly

A quick learner from 62040 says:
December 2, 2023
I need to know what to get. my window has no markings or numbers the only thing I could find was a number 5 on a coil. I'm pretty sure this is a very old window and I need assistance on this urgently.
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Bob from SWISCO responded:
December 3, 2023

Thanks for posting. It appears you have an older version of the 15-140 Pivot Shoe. This shoe interfaces with Series 150 Coil Balance springs. A spring stamped '5' means it can be replaced with an S150-5 5 pound spring. For new coil housing, you can use the 15-143, 15-144, 15-145; these parts 'sandwich' around each individual coil. Let me know if you have further questions. 
5 lb Series 150 Coil Balance
5 lb Series 150 Coil Balance
S150-5
$6.55
Coil Bushing
Coil Bushing
15-143
$0.97
Coil Bushing Cap
Coil Bushing Cap
15-144
$0.70
Coil Support Barrel
Coil Support Barrel
15-145
$0.49
Coil Balance Shoe
Coil Balance Shoe
15-140
$3.07
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