Window crank not functioning : SWISCO.com

Home Owner from Wi

Jun 14, 2026 7:14 pm

The crack in my window stopped working. The part looks like it's been stripped and it just won't grip. I can turn the crank but nothing happens. Looking for a replacement part.

3 user uploaded images

6 Replies

Bob from SWISCO

Jun 15, 2026 2:37 am

Hello there. When that worm gear pops out with the operator, it means the entire operator has broken down and should be replaced. Can you open the window and show us the entire mechanism, including the arm(s) that move the window, from a bird's eye perspective? We'll do our best to help from there.

Home Owner from Wi

Jun 15, 2026 6:26 pm

Hello, Bob! Thanks for your help. I took a few more photos. Hopefully it will help.

3 user uploaded images

Bob from SWISCO

Jun 17, 2026 3:04 pm

Thanks for getting back to me. It looks to me like you might have the 39-348 Awning Operator. Review to confirm. For a new handle, see the 39-205 sold separately. If you need to replace the shoe studs and track, see the 36-078 and 36-078B.

detail of 39-348

Home Owner from Wi

Jun 18, 2026 6:06 am

Thank you so much for the help. I'll investigate!

Bob from SWISCO

Jun 18, 2026 2:34 pm

Let us know if you have further questions, and thanks a lot for contacting us.