Coil Window Balancer

Handy Person from NY

Jun 17, 2019 2:36 pm

Good afternoon

Try to replace the 2 window balancers shown in the photo.. Window in question is 24"x 33"..

I cant seem to find any numbers on the coils themselves.

Any way you can point me in the right direction??

Thanks

2 user uploaded images

12 Replies

Bob from SWISCO

Jun 19, 2019 12:33 pm

Thanks for posting. This looks our 15-192. This pivot shoe is compatible with our Series 170 and Series 171 Coil Springs. If you have more than one spring on each side of the sash, the Series 171 sits on top of the Series 170, with a longer tongue to reach around to connect to the shoe. If your springs don't have stamps, give us the exact weight of your window sash, and we'll be able to calculate what you need.

Handy Person from NY

Jun 19, 2019 2:50 pm

Thanks for the response..

The Coil springs do not have any markings at all on them, i'm guessing that they are work off..

There is one coil on each side of the sash and each window weighs approx 20lbs.

Thank you

Bob from SWISCO

Jun 20, 2019 10:33 am

Thanks for getting back to me. We don't have any spring for the Series 170 that hold 10 lbs individually; but it's not uncommon to end up using more coil springs than you did before, depending on the age of the original springs, so that's not an issue. I would advise that you try to get the exact weight of the window sash before we go any further, however. There might be a margin of + or - 1 lb to play with, but it's really too risky to guess this otherwise, as then the coil balances may fail to support your window. If you can provide the exact window sash weight, we can go from there. Many thanks!

Handy Person from NY

Jun 20, 2019 12:01 pm

Thanks again for the response..

The exact weight of the window is 20.2 lbs

Hope this helps to resolve the issue.

Thanks again

Bob from SWISCO

Jun 21, 2019 6:49 am

OK, thanks for confirming the exact weight for me. Just best to be safe! In this case, I would use (2) of the S170-405 5 lb Spring Weights on both sides of the window sash. This would equal 10 lbs of support on both sides of the sash, for a total of 20 lbs of support overall. Let me know if you have any other questions.

Handy Person from NY

Jun 21, 2019 11:30 am

Thanks for the info..

I guess when attaching them to the pivot shoe, I would "spool" both together then on both sides?
(Meaning unwind and wind the 2 together as 1 unit)

Thank you

Bob from SWISCO

Jun 24, 2019 7:03 am

Ahh, let me clarify. First of all, I was wrong in my previous post. You will have (1) of the S170-405 and (1) of the S171-405 on each side of the sash. You use the Series 171 for the 'second' coil spring on each side of the sash since it has a longer tongue to reach past the Series 170 to attach to the pivot shoe. Apologies for the oversight on my part. At any rate, the coil springs would be stacked one atop the other, and would then wind or unwind as needed with the travel of the sash itself. Let me know if this makes sense.

Handy Person from NY

Jun 24, 2019 11:06 am

Thanks for the clarification..

so having 2 coils will give the support that I need, but I will also need to change the coil support to mount the second coil.. correct?

if so, which would i need to get that would fit in the window frame?

Thanks

Bob from SWISCO

Jun 24, 2019 12:49 pm

In the case of these types of coil springs, you can use the 15-156 and 15-157 to house both coils individually. These will work for both the Series 170 and Series 171.

Bob from SWISCO

Jun 24, 2019 2:22 pm

Thanks for posting. I'm honestly not entirely sure what this stamp number represents, but in any case, our best replacement option is what I recommended: (1) of the S170-405 and (1) of the S171-405, on each side of the sash.

Handy Person from NY

Jun 24, 2019 2:53 pm

So after cleaning up a few of the coils I finally found a part number on one of them

its 3610 with an SA under the number
(see attached photo)

Thanks again for all the help

1 user uploaded image