Balance assembly

Quick Learner from Mechanicsburg, PA
I need a balance assembly for my double hung window serial number 113-716538. It is a double coil assembly 3.5 inches long, 1.25 inches wide and 0.5 inches deep.
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12 Replies
Quick Learner from Mechanicsburg, PA
I now see you stock the coil springs which can be replaced. Mine are 3/8 inches wide
Tom
Tom from SWISCO
SWISCO
Expert

Thanks for this information. It's a great start, but I still need a bit more before I make a recommendation. Specifically, can you show me a picture of the pivot shoe your springs connect to?

Quick Learner from Mechanicsburg, PA
Thank you so much!
See photos. If you need me to remove the pivot shoe from the channel, let me know
2 user uploaded images
Tom
Tom from SWISCO
SWISCO
Expert

Thank you, that's a big help. Your pivot shoe here is a match for our 15-177, which is designed to work with the Series 152 spring. The problem is that this spring is 1/2" thick, not 3/8". You may want to double check that measurement to be safe.

As for removal, the video below may help.

Quick Learner from Mechanicsburg, PA
Thanks again!
The coil spring is definitely 3/8" wide. The 1/2" size will not fit the channels.
Quick Learner from Mechanicsburg, PA
Correction: the channels are 1/2" wide but the coils are only 3/8"
Tom
Tom from SWISCO
SWISCO
Expert

That is odd. I'm not aware of any coil in this style but with a 3/8" thickness. Are there any numbers or letters stamped on the end of the spring? If so, can you tell me what they are, or show me a picture? That may offer a clue.

Quick Learner from Mechanicsburg, PA
The ends of the coils have a hole to receive a screw that attaches them to the pivot shoe (see photo). The ends are marked 9 5 L.
3 user uploaded images
Paul
Paul from SWISCO
SWISCO
Expert

Like Tom said, we have the 15-177 pivot shoe, but those 3/8" coil springs aren't something we can provide. We only have those in 1/2". 

We can still help, but you'll need a new style balance system. I recommend considering our 15-191 pivot shoe along with two S165-3 and one S165-4 coil spring. I also recommend the 15-205 coil spring support. You will also need to replace the pivot bar with something like the 26-454.

Please review these parts and let us know if you had any questions.

Quick Learner from Mechanicsburg, PA
Hello Tom and Paul,
The descriptions for the S165-3 and S165-4 coil springs indicate that they are 3/8 inches wide!
-Nick
Paul
Paul from SWISCO
SWISCO
Expert

That's correct. That's the size you need, which is why I recommended them. But in order to use them, you have to get a new style shoe, which is why I recommended the 15-191 pivot shoe as well.

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