Casement crank mechanism

Quick Learner from Grand Marais, and Minneapolis, Minnesota

Jun 3, 2023 12:23 pm

The metal on the crank mechanism has broken so that the casing is no longer attached to the sill. Do you know of a replacement part for this?
Thank you.

4 user uploaded images

4 Replies

Bob from SWISCO

Jun 3, 2023 4:10 pm

Thanks for writing in. We come across this operator now and again. I'm afraid it is no longer made, but depending on the length of the link arm, you may be able to use something like our 39-028E as a replacement. We cannot guarantee that this will work, and it will require some adaptation of the sill and sill trim due to the differences in the shape of the operator bases. Nevertheless, take a look and see what you think. If you try it, let us know how you make out.

Quick Learner from Grand Marais, MN

Jun 6, 2023 10:43 am

Thank you fit your response.
The arm length on the current (broken) operator is 11", and the length on the operator you suggested is 9-1/2". Will this work with a different arm length? Seems like it should, but I'm uncertain.

Bob from SWISCO

Jun 6, 2023 3:10 pm

The arm length is definitely a concern, as is the style of the base. You will almost certainly have to retrofit the sill to accept the new design as well as the location of the track on the sash to make up for the difference size arm. Even then, there's a good chance it still won't work. I wouldn't suggest trying if you aren't handy, or even if you've never worked with this kind of window before.