Broken coil balancer

Quick Learner from Whitmore lake Michigan

Nov 21, 2025 3:43 pm

Trying to replace the parts broken on both sides of my window. I don't know the brand of the window but appears the coils snapped off and I'm thinking the pivot pin that goes into the window has broken as well.
Thank you in advance for help identifying this problem and hopefully a fix.
Matt

1 user uploaded image

5 Replies

Quick Learner from Whitmore lake Michigan

Nov 21, 2025 3:44 pm

The coils are 1/2 in width and the window is approximately 26" tall if that matters

Emily from SWISCO

Nov 25, 2025 2:09 pm

Hi there Matt.

Thank you for reaching out to us. Your pivot shoe matches our 15-177, which is designed to use the Series 152 coil springs. You'll have to check the old spring band for a stamped weight code.

We're happy to ID the pivot bar, but we'll need to see photos of an undamaged version removed from the window.

Alternate image for 15-177

Quick Learner from Whitmore lake Michigan

Nov 28, 2025 3:19 pm

Great, thank you so much for the reply and help, but I can't seem to find a weight code on the spring band. Where would that most likely be found? Also, not sure how to remove/ disengage the other window to remove it?
Attached are additional pictures. Thank you very much for your assistance.
Matthew

2 user uploaded images

Emily from SWISCO

Dec 1, 2025 3:45 pm

The code would be on the tongue of the spring, which would require removing and inspecting the old one. If there aren't any stamps, you'll have to divide the sash weight by the number of springs used in the window. You're also welcome to get back to us with the sash weight for us to calculate.

The video below shows a different part, but the process for removing the window sash remains the same. To do this, tilt the sash inward and twist it. The goal is to lift one balance higher in the frame than its counterpart on the other side. This angle will create enough clearance for the pivot bars to slip out of the cam.