Anderson worm gear assembly broken

A quick learner from Pasadena MD says:
Hello,
I have these two windows and the assembly cover on the left window has broken and the worm gear can be removed. On the right hand gear assembly the cover is cracked and there is some play in the handle when opening/closing.

7191-33B is stamped on the inside of the cover.

I think I need new gear assemblies for both windows.

Can you help me find the correct parts?
Thanks
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Emily from SWISCO responded:

Hi there!

Start by comparing your dimensions to our 39-146 and 39-147 operators to see if these match up to your original assembly. 

A quick learner from Pasadena MD says:
Thanks!
Looks like the parts I need!
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Emily from SWISCO responded:

You're welcome! Good luck with the repair and we'll be here if you need anything else! 

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