Originally Posted by Delphine
Could one pane be removed and the other left in place. Some have suggested drilling a small hole in the bottom of the window so the water could leak out. I would be afraid of breaking the whole thing.
I think you are less liable to break "the whole thing" by drilling a drain hole.
There are 2 ways to remove one pane. The fast way is to break out the inner pane. Use a spring loaded centerpunch rather than a hammer. The second way is to remove and disassemble the window. This is a lot of work. Relatively easy disassemble but a Humpty Dumpty to put back together again, but I did it. Wouldn't want to again. When my window in my 71 broken I replaced it with one from a 75. The 75 window had 2 thick and substantial panes 3/16". If you disassemble you then have a spare pane. I was not able to reuse the rubber gasket which for 70s models anyway is no longer available. I used Vulkem as a substitute for the gasket.