Need help identifying parts

Question

I have a ten year old Simonton Double Hung vinyl window in which the upper unit has failed coil balances and on one side the pivot bar has broken and a missing sash vent stop.

I'd like to acquire the appropriate parts (replacement pivot bar(s), balance springs and while I'm at it, probably good to replace the pivot shoes and cover), but am unsure of the exact part numbers.

It appear to be a double spring arrangement (due to the size of the cover), with 35 inch 6.5 pound springs based upon the printing on the springs I have removed, but an experts guidance would be really appreciated.

It looks like the correct pivot bar is 26-378 and from your site, the 160 6.5 (S160-6) balances appear correct and the sash vent stop appears to be 26-354, but any help would be appreciated.

I have attached pictures of the product sticker on the window as well as the broken portion of the pivot bar for reference.The legible numbers on the coil look like a PAT 5232208, 35" and on one, 6.5 and the other 5.5 (never heard that they mixed coils like that).
Attached find pictures of the coil bits I removed, an intact pivot rod, the shoe on the working sash as an example of how they assembled and a picture of the cover which looks like a double cover to me as well as the sash vent stop.

Thanks for your attention.

Bob · Accepted Answer

Hello there. Having two coil springs with different spring weights on the same side of the sash isn't really unusual. It all comes down to whatever the exact weight of the window sash is. If the sash weighed 24 pounds, then you'd need 12 pounds of support on both sides of the window. In that case, the S160-6 6.5 pound spring and 160-5 5.5 pound spring would get you that desired number. If in doubt, obtain the exact weight of the window sash, and I can work out what you need.

Make sure the coil springs are indeed 1/2" thick; if they're 3/8" thick instead, you'd need our Series 165 instead. I agree the pivot bar resembles the 26-378 and the 26-354 Vent Latch seems promising; but ultimately you'll need to compare the dimensions to confirm.