Balance springs assistance

Unfortunately,your wood sash balance is no longer made. You will need our S500-25 red tip spiral balance with the 17-012 balance brackets. These brackets hook on the balance spiral. 

To install these balances, you would drop them from the top on the side of the sash. Use the 33-017 screw to attach the balance tubes at the top. Now raise the sash and have someone hold it up while you attach the bottom bracket,17-012 with the 33-090 screw, while the U-shape opening corrals the spiral. With your finger bring up the spiral to the bracket and attach the 75-005 charging tool and turn the spiral clockwise three turns and hook it to the fork of the bracket. Repeat the other side and try the sash. If sash creeps down, raise and hold up the sash and give the balances another turn or two. 

Please make sure to get back to us and let us know how everything works out. 

Hello,

I'll attache Paul's recommendations below:

Unfortunately, your wood sash balance is no longer made. You will need our S500-25 red tip spiral balance with the 17-012 balance brackets. These brackets hook on the balance spiral.

To install these balances, you would drop them from the top on the side of the sash. Use the 33-017 screw to attach the balance tubes at the top. Now raise the sash and have someone hold it up while you attach the bottom bracket,17-012 with the 33-090 screw, while the U-shape opening corrals the spiral. With your finger bring up the spiral to the bracket and attach the 75-005 charging tool and turn the spiral clockwise three turns and hook it to the fork of the bracket. Repeat the other side and try the sash. If sash creeps down, raise and hold up the sash and give the balances another turn or two.

Please make sure to get back to us and let us know how everything works out. 

You are correct, you should match the tube that is 24" for S500-24.

To installed a spiral balance to the frame, you screw it in at the top where the old balance went, yes. As for sash weight, you should absolutely get yours. That's probably the most important aspect of a balance. You want the spring to have the right calibration, otherwise it won't "balance" the weight of the sash.

You may want to try loosening the top installation screw on the balance and raising and lowering the sash a few times to see if it straightens itself out. If that doesn't help, then adjust the bottom bracket.