SWISCO - The Replacement Hardware Authority

Spring Assy

A quick learner from Memphis, TN says:
The last picture is what I believe to be the problem. Looks like black roller is tilted and string is wedged.
User submitted photos of a window balance.
A quick learner from Memphis, TN says:
Sorry width is 1/2". It looks like the black roller pivot pin is broken on one side to me.
Profile picture of Paul
Paul from SWISCO responded:
Based on what I see in your third picture, your balance is broken and will need to be replaced. Start by looking at our S390-40 channel balance, this may be the part you need.
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