Broken pivot lock

This looks like the old Simonton shoe. They don't make this anymore, unfortunately, but our 15-192 is a similar design. Just note that this is not made to work in your window. It's technically a different part for a different window.

This might still work for you, but only if the following two alterations:

• You need to trim the alignment lugs along the face with a utility knife. Otherwise it won't fit in the track.
• You need to reuse the metal cam from your old shoe. Otherwise it won't fit the original pivot bar.

If you make those two fixes, then the 15-192 ought to work.