semco double hung tilt window

Quick Learner from Maple Park, IL

Sep 7, 2017 10:37 pm

after tilting the window it locks into a blue plastic clip that then alows the window to slid up and down and holds the window in place not allowing it to fall. These are breaking off so window must be supported with a block, etc to stay open.
Can supply any identification that you need. Thank You!
20TG found on track
19!/4" high x 271/4" wide glass
purchased 5/30/1996

7 Replies

Tom from SWISCO

Sep 8, 2017 9:58 am

Can you update us with a photo? We want to see the problem you're having, as well as the part you believe to be the culprit.

Quick Learner from Maple Park , Il

Sep 11, 2017 2:55 pm

Attached are the pictures of an operating window, in which the blue plastic slide is still attached and working correctly in the Semco windows.

User submitted photos of window hardware.

Paul from SWISCO

Sep 14, 2017 4:47 pm

That blue knife-lock shoe now comes in black. It's our 15-014, used for heavy balance springs. The S751-21 ribbed tilt balance comes with a 15-014 and a (20TG) spring, for a sash weighing between 20-30 pounds. That spring option seems too high for your window sash size, though, so please weigh your sash to be sure.

Quick Learner from Maple Park, IL

Sep 22, 2017 5:40 pm

The single double hung window weighs 15lbs. Hopefully there are replacement pieces for this weight of window. I have also inclosed pictures of the broken pieces from 1 window.
Thank you

Paul from SWISCO

Sep 28, 2017 12:31 pm

Your old S751-21 had a spring weight of "20TG," for a sash weight between 20 and 30 pounds. For a 15 pound sash, it is "20R." That is a significant difference. If the sash was performing fine with the "20TG," I would stay with that. We also have "20HD," which covers a sash weight of 17 to 20 pounds. That would be a better choice if you truly want to down-size the spring weight.

Quick Learner from Maple Park, IL

Oct 5, 2017 10:51 am

Thank you so much for all your help and the video describing how to install the new parts. Parts are ordered and anxious to get everything installed to have working windows again.
Thanks again.