Windows will not stay up

A quick learner from Iowa says:
December 7, 2020
I have older windows in my home and many of the windows will not stay up when open. There is no numbers or identifiers on the window parts. I believe I need new springs or the whole unit. Can you help me identify the parts in the pictured shown.
Thumbnail of the uploaded file named IMG957669001.jpg
Thumbnail of the uploaded file named IMG957673.jpg
Thumbnail of the uploaded file named IMG957672.jpg
Thumbnail of the uploaded file named 629083553001.jpg
Profile picture of Casey
Casey from SWISCO responded:
December 9, 2020

Hello,

Unfortunately, our company does not carry replacement jamb liners or naked balance springs. The only part of this assembly that we carry would be our 15-104 friction shoe. If you need new jamb liners, a local millwork may be able to assist you if you are working on wood windows. Thanks for posting and good luck with your repair! 
Caradco Friction Shoe
Caradco Friction Shoe
15-104
$1.95
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.