Appears to be constant force coils
Handy Person from Detroit area Michigan.
Jan 20, 2026 8:47 am
On the other side of this window, the shoe is missing the pivoting barrel, and the bottom of the shoe is broken. The window will no longer stay up. The same is true for the neighboring window, one side the shoe is broken. Need help identifying and purchasing the correct replacement parts.
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2 Replies
Jasmine from SWISCO
Jan 20, 2026 11:52 am
Your coil shoe is a match for the 15-180 Coil Balance Shoe. It is compatible with the 26-040 Pivot Bar. The dimensions for the pivot bar can be found on the website.
Alternate image for 15-180
The compatible coil spring is the Series 190 Coil Balance, which is attached using the 33-073 screw. The pieces anchoring them to the window track are the 15-181 Double Support Detent Clip and 15-182 Balance Bushing.
Take a look at the tutorial below for instructions on selecting the correct coil weight option.
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