Window balance
Hi there!
Thank you for reaching out to us. We're happy to help with this, but the balance is too obscured. Can you show us a clear photo of the entire assembly?
If there isn't a cutout in the window track to remove the hardware, you'll need to make one yourself as shown in the video below.
To release the sash from the coil balance pivot shoe in the window track, first raise the sash about six inches and tilt it down to lock the pivot shoes in place. To remove the sash, twist it so that one side goes up while the other side remains down. As you do this, the pivot bar will release from one side as it moves up from the pivot shoe. For a demonstration of this twisting method, refer to the first few minutes of "How to Replace a Tilt Window Spiral Balance."