A quick learner from 20878 says:
October 11, 2016
I have a double hung MI window. The top pane will not stay up with a click like my other similar windows. I see the double detention clip has broken off at the bottom part below the lower screw. Is the detention clip keeping the top pane locked in the closed position? It looks like the spring and all other components are intact. Can I assume the double detention clip is the culprit for this problem I have?
Tom from SWISCO responded:
October 13, 2016
If your window won't stay up, the problem is likely with the springs themselves. The clip only holds the springs in place, but all the heavy lifting is done by the springs. Please show me a picture of the pivot shoe to which the springs attach and I can recommend our best replacement!