need coil replacement

A quick learner from Buffalo Grove, IL says:
November 21, 2020
"8" stamped on coil - picture 2. bathroom window (smaller) so only 1 coil per side
"E" stamped on plastic part
Thumbnail of the uploaded file named window coil 2.JPG
Thumbnail of the uploaded file named window coil1.JPG
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Casey from SWISCO responded:
November 24, 2020

Hi there, thanks for writing in. I'd be happy to help you identify the right coil balance replacements. However, I will first need to see an image of the pivot shoe, as this is in an important factor in making the correct recommendation. Thanks! 
A quick learner from Buffalo Grove, IL says:
November 24, 2020
does this pic work?
Thumbnail of the uploaded file named shoe.JPG
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Casey from SWISCO responded:
November 25, 2020

That's great! Thank you. This appears to be our 15-177 coil balance shoe, which works with the Series 152 coil springs. Because your spring is stamped with the number 8, you will need our S152-8. For the housing hardware, see our 15-143, 15-144, and 15-145. Let me know if there's anything else I can assist you with! 
A quick learner from Buffalo Grove, IL says:
November 25, 2020
Thx Julia for the response. My coil has a notch instead of a hole. So the S152-8 may not work; unless I need to adapt it to connect to the shoe. Please advise. Thank you.
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Casey from SWISCO responded:
November 25, 2020

Our Series 152 coil springs are designed to work with your pivot shoe, so I believe it should still work for you despite the stylistic difference. This video may assist you with the installation process. 
A quick learner from Buffalo Grove, IL says:
November 25, 2020
I watched that video but did not find it helpful. How do I connect the coil to the shoe? Thx.
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Casey from SWISCO responded:
November 25, 2020

The coil spring slips into the slots on the pivot shoe. These two products are explicitly designed to work together, so I feel pretty confident this is the setup you want.
A quick learner from Buffalo Grove, IL says:
November 25, 2020
I'll give it a try. Thx.
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Casey from SWISCO responded:
November 25, 2020

It’s my pleasure. Thank you for choosing SWISCO.com. We really appreciate your business and hope you will consider us for your future hardware replacement needs.
Coil Balance Shoe, Slate Blue
Coil Balance Shoe, Slate Blue
15-177
$3.47
8 lb Series 152 Coil Balance
8 lb Series 152 Coil Balance
S152-8
$4.90
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
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How to remove window pivot shoes
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