Tilt roller

Question

I want to change all four of them. Which part or parts do I need to purchase. I need the assembly basically if it comes as one, otherwise please let me know which parts I need
Thank you in advance

Bob · Accepted Answer

Hey there. This looks like a 15-087 Pivot Shoe, which uses Series 180 Coil Balance springs sold separately. The stamp 7 likely means you can use the S180-07 7 pound spring. You can weigh the window to confirm the coil spring weight you need--give me that exact weight and I can calculate it.

Series 180 coil balance diagram