identify correct Pella crank to purchase

A handy person from Chapel Hill NC says:

October 20, 2012

Lots of terminology floating around on the posts, so I want to ensure that I order the correct part. The interlock mechanism that attaches the crank arm to the gear broke, so I think that I only need a crank and not the crank plus the arm. Which part number is this? Can I buy just the correct crank?

User submitted a photo of a window operator.

Casey from SWISCO responded:

October 25, 2012

Thanks for posting. This is a very strange set up. It looks like you have an awning window using a casement window crank! That said, the crank itself looks similar to our 39-176 & 39-175. Compare these to your own hardware and see if you think this will work for you.

A handy person from Chapel Hill says:

August 17, 2013

Hi I got the correct crank, replaced it and it now actuates great. Next related question, if you don't mind. Full free motion on the window when open, but jams on the jamb right where closing. We can't get the window to "seat" and lock without having a 2nd person push from the outside. Seems there are plastic sliders that have degraded over time, allowing slop in the left/right position and the side opposite the crank jams against the jamb.

Tom from SWISCO responded:

August 19, 2013

Hey, good to see you again. I'm happy to hear our operators worked for you!

Now, as for your windows not closing properly. Did you have this problem before you replaced the operators? Either way, I'd like you to try something before we recommend anything else. Disconnect the operators from the windows and try closing them manually. Let me know if they still bind or not.

Sash Crank Operator, Pella

39-175

$241.70

Sash Crank Operator, Pella

39-176

$241.70

Anatomy of a casement window

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