Pivot shoe and coiled balance spring

Question

My springs are shot. The window width is 37" and weighs 23 lbs. I see no identifying numbers on the springs. Looking for coiled springs and pivot shoes. The shoe measures 1 3/8H x 1 3/16W and is 9/16 thick. Can you identify the parts? Thanks!

Jasmine · Accepted Answer

You'll need the 15-177 Coil Balance Shoe to replace the one in this assembly. The existing shoe is no longer made but this shoe will work to replace it. Take a look over the dimensions below to be sure it is the correct fit.

Alternate image for 15-177

This shoe is compatible with the Series 152 Coil Balance, which is attached using the 33-072 screw. Since the sash weighs 23lbs, you'll need the S152-6.

The covers/supports can be replaced with the 15-143 Coil Bushing, 15-144 Coil Bushing Cap, and 15-145 Coil Support Barrel.