Truth Entry Gard window actuator

Question

Hello, Swisco -

I built my house 30 years ago and used fibreglas windows manufactured by Corning. Their window division went out of business not long thereafter. Now one window does not open. When the crank is turned the helical gear backs out. It appears to me that the ring that holds that gear in location is no longer secured.

1 - As a first step, can you identify the pictured part? The number on the baseplate is 40471. The shorter arm attached to the gear is labelled L30841. The extension of that arm, the piece that clips to the fixed pin on the window frame, is stamped 20810. The underside (unseen in pic) of the longer, straight arm is stamped LH 30470. Is there a replacement available? I will provide more pictures and detailed measurements at your direction.

2 - Your website suggests that the gear is stripped and cannot be repaired. To my eye nothing in the gear train looks badly deformed. Is the ferrule that secures the helical gear a press fit? Could it have been forced out of position by excessive torque on the crank?

3 - I have about 20 of these cranksets of both handednesses. All the others work smoothly, but given their age, would you recommend that I replace them all now? Or procure enough to protect against further failures in the next decade in case you go out of business?

Any and all advice would be greatly appreciated!

Larry

Jasmine · Accepted Answer

Hi Larry, thanks for reaching out!

1- To start, your casement operators appear to be our 39-031 and 39-032. Although I am confident these are the correct replacements, I've included a diagram from part 39-032 so that you can compare the dimensions to your existing operator.

Dimensions for 39-032

These are compatible with the 39-107 cover and the 39-114L crank handle.

2- These are machine pressed at the factory, so you would need to have the machinery available to assemble them. With that being said, that is the reason why these cannot be repaired. Therefore, the only option is to replace the entire casement operator.

Also, yes, in our experience the gear worms in these handles almost always come loose due to excessive torque on the crank.

3- Given that your windows are about 30 years old it may not be a bad idea to replace all of your crank handles, but honestly it depends on what kind of project you want to deal with. Being completely transparent, replacing the hardware on 20 windows may be a tedious project. But it is possible!

Let me know if you have any questions.