Semco Balance and inside part.

A quick learner from Westerville, OH says:
The plastic part is broken on both sides. Inside sash. And the outside sashes as well. The picture on the side of the sash is a part window I believe.

I would like to know how to order these parts. And, how to replace them.
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Tom from SWISCO responded:

Looks like you need a new balance shoe. I just can't quite make it out from this photo. Would it be possible to see it removed?

For help on how to take this kid of balance out of the window, I recommend watching the video below. We should cover everything here.

A quick learner from Westerville, OH says:
I have tried to remove it. But, the window is not like the one in the video. It does not have any screws to remove the interior strip. I am hesitant to remove the jam liner for fear I will destroy it. I don't have the parts to replace the jam liner. Maybe you sell those as well.
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Tom from SWISCO responded:

We do not sell jamb liners, unfortunately. It is peculiar that yours doesn't remove the same way. It wouldn't shock me that your window manufacturer designed it to be impossible to repair (I've seen it before and I hate it). Give us a little more time to look into this. I'll show this to my colleague Paul, who has a lot of experience with these kinds of windows. He may have a couple ideas.

A quick learner from Westerville, OH says:
Semco is the window brand and the number stamped on the side of the sash is OCS3230 9770. I hope that helps in some way. Thank you for your help!
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Paul from SWISCO responded:

I'm afraid that that code doesn't help us. Like Tom said, you will need to remove the jamb liners to slide out the ribbed balances to show them to us. 

Because the windows are old, the jamb liners are going to be harder to remove due to the caulking and paint. With both sashes removed, carefully cut away the caulk and paint along the edge. That should allow you to remove the jamb liner as shown in the video.

A quick learner from Westerville, OH says:
I was able to take the liners apart. Here are two photos of the broken parts. I am really hoping that you have these parts or can help me find them.
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Tom from SWISCO responded:

Thank you! That looks just like our 15-197 knife lock shoe. Look it over and see if you agree.

Did you just need the shoe, or did you need all new replacement balances? It's possible to replace the shoe by itself, but it can be tricky. You'll have to extend the cord from the balance and lock it in place in a vise. Make sure it's nice and secure; because it's going to be under a lot of pressure, there's a risk that the cord and shoe will snap back to the balance if it's not tightly held in place. After that, it's a simple matter of untying the old shoe off and tying the new shoe back on.

Let me know if you have any questions, or if you did want an all new balance. If you did, it will have to be a custom order. I'll have more questions in that scenario, but we can cross that bride when we get there.

A quick learner from Westerville, OH says:
That shoe looks like the one I need. I'll order some today. I don't need the balance, it's in good working order.

Thank you, I really appreciate the help!
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Tom from SWISCO responded:

Awesome, glad to hear it! Thank you very much for ordering with us and please let me know if you ever need anything else. 

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