Help to ID Balance

Many thanks for writing in. These wood sashes uses vinyl sash jamb liners. You need to tilt in the sashes and remove them from the jamb liners. Now you can remove the jamb liners from the window frame. Laying down the jamb liners you can slide out the ribbed balance from the jamb liner and show us. We will need to see the locking shoe connected to the cord, the length of the metal channel balance and the spring weight stamped on the channel.

Ah, thanks for the clarification. It has been a long time since I worked on this type of wood sash! Try one of these methods. Bring the bottom sash up about 6-8" and try to pull the top of the sash towards you from the jamb liner. If that doesn't work, with one hand on the top and bottom sash push the sash to one side and see if you can swing out the other side of the sash from the jamb liner. Let us know of your progress.