The numbers 45035, 40351 and 40352 are stampings on our 30905 operator, or more specifically our Truth Split Arm Operator 30905. These numbers are just stamping numbers, but they help us make an educated guess that you have the Truth Split Arm Operator 30905. We find the number 45035 cast into the crank gear box housing. We find the number 40351 on the right hand arm, and 40352 on the left hand arm. The number 30905 we find on the linkage arm which connects to the window or sash through a bracket. The linkage arm measures 4-1/2″ from rivet to the center of the hole, and measures 5″ overall length. The linkage arm offsets upward. This window crank can be found on our window website @ https://www.homewindowrepair.com/truth-split-arm-operator-30905.html

People call all the time with this Truth operator number 30905, but the number is just the stamping number of the window operator linkage number.  Truth Window Part Number 30905 is the operator Wi1518.  TRUTH SPLIT ARM WINDOW OPERATOR 15.18.   We keep these in stock in White, Bronze and Gold.

The above arm on the right hand side of the picture is stamped 30905