Coil issue?

Hello,

Thanks for writing in! Your coil balance shoe looks a lot like the 15-180 Coil Balance Shoe. To confirm that this is the right replacement, carefully review and compare the dimensions shown below.

Alternate image for 15-180

The coil spring compatible with this balance is the Series 190 Coil Balance. Since yours is stamped with an 8, you'll need the S190-840. This spring is secured to the balance shoe using the 33-073 screw, the 15-182 Balance Bushing, and 15-186 Coil Balance Clip.

I'm happy to help!  Given the 26lb sash weight, you'll need spring strength of 13lbs on each side of the sash. Since you've already purchased the 8lb coil, you'll just need to purchase the 5lb coil, part S190-540. 

This means that you'll also need the 15-181 Double Support Detent Clip and two more of the 15-182  Balance Bushings. Keeper in mind, your window is likely only set up to use the single clip, so you'll need to make a new installation hole to properly install it.

Please don't hesitate to reach our with any questions.

The coils would install to the opposite side of the shoe. There are installation holes in the shoe where the coils can be secured using the 33-073 Truss Head Stainless Steel Phillips Screw. Once you've installed the first coil, you'll need to the attach the second coil to the shoe and pull it over the first coil.

I hope this helps!

I'm happy to help! Again, please don't hesitate to reach out with any other questions you might have.

Have a great day!