Casement Window Crank Handle

Good Morning;

Am search for replacement crank handles for the Truth Mechanism installed in my Schuco Casement Windows in the Spring of 2006. The handles are "spinning" around the spindle; hopefully, changing the handle will solve the problem as changing the spindle does not look easy

The left handle has the following number stamped on the inside: 45240 II; the right turning unit has part number 46240 10 stamped on it

Thank you for your time and consideration

Assume that the spline size is the width of the spline, including the teeth!! if that is so my micrometer says its 11/32. Many thanks

Many thanks!! The 29-114L crank handles arrived and were installed. Unfortunately, the new crank handles only solved 1/2 of my problem. I can now use the handles to successfully open the windows; however, I can not use them to close the windows. I assume that there is a stripped gear inside the Box in the attached photo

1.) how do I access the interior workings of this gear mechanism?

2.) can I purchase just the failed part or do I need to purchase an all mechanism?

George

Hi. This is a follow-up to an earlier posting this morning: I followed your on-line video instruction on removing the operator. I have included a photo of the operator for your ease in identifying the part. Will need both left and a right unit. The cover appears to be glued to the operator unit. The cover measures 4 1/32 inches wide; the operator itself is 4 x 2 5/8 wide

Thank you!!

George