K/K replacement window crank (right side window)

A quick learner from USA says:
Hello,

All of the windows in my home are labeled with a crank cover that says "K/K". I have ordered replacement cranks from your company many times in the past, without any issue. This particular time however, the replacement I am not having any luck with the part I ordered. I am wondering if I totally messed up and ordered the wrong part, or something is wrong with the current one I purchased (It almost seems like the gears are stripped?).

The order number was #902056 and the part was (1) 38-155 : Caradco Window Crank, 9-1/2"

The photos attached are for the original crank I am trying to replace. If you were able to help me out, I would really appreciate it. If I can provide any additional information please let me know.

Thank you for your time,
User submitted photos of a window operator.
Profile picture of Tom
Tom from SWISCO responded:
Thank you for reaching out to us. Please take a look at our 39-031 operator. This is similar to our 39-155, but the link arm is longer at 4-7/16". Could this be a better match for you?
Watch How To Repair A Casement Window Crank Operator
Watch How To Repair A Casement Window Crank Operator
VIDEO
WATCH >
Connecting a casement window operator to stud bracket
Connecting a casement window operator to stud bracket
VIDEO
WATCH >
How to Orient a Dual-Arm Operator
How to Orient a Dual-Arm Operator
VIDEO
WATCH >
Anatomy of a casement window
Anatomy of a casement window
VIDEO
WATCH >
How to identify casement and awning operators
How to identify casement and awning operators
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.