Dave Sr. from SWISCO responded:
August 3, 2010
Looks like the main gear could be too long on the 39-060. You say the operator is pulling out of the window? Maybe try a thicker screw with a larger diameter. Remember it can't be too long or it will hit the gearing. Can you measure how far out the operator sticks out past the housing?
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Dave Sr. from SWISCO responded:
August 6, 2010
The arm length should not be a problem. You do have some travel in the gear box to make up any difference in the arm length, so that your window will open and close. I checked around on the arm lengths for Keller, and I can not find one with the same arm length as yours. Maybe your operator was replaced once before and another manufacturer's operator was used? As long as the window opens and closes you should be okay.
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Casey from SWISCO responded:
August 19, 2010
I will email you a custom ordering link for a link arm rivet.
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