window balances will not stay up

they do not stay up
how do i go about fixing the balances
are the springs changeable or do i change the hold plastic track
thanks for your help bills carpentry




down stairs windows
springs are 20" long
colors are black and purple both the same lenght
upstairs windows springs 17" purple
and 18 1/2" red
also will need the plastic runner that the window hooks into




The part you have pictured resembles our 15-104 friction shoe. I believe you can use this as a replacement. I'm afraid we cannot replace the springs themselves, though. You would need to contact a local mill work who still makes wood windows and have them replace the jambs.




I'm sorry to say that we don't sell a friction shoe with that ridge. The 15-104 remains the only part we sell that would replace this.
I'm not sure how much of an impact that ridge would make on how well our part replaces it. Is there any particular function it serves that would prevent the 15-104 from working?




Thanks for clarifying. That is unfortunate. The bad news is that this is the only friction shoe our company can supply at this time. These are used on very old windows, and repair parts for this kind of window are very difficult to get a hold of. In most cases they aren't even made anymore, so options are very limited.
I'm very sorry for the inconvenience.