Built Best Window crank assembly

I'm very confident that we can help you with this project, yes. However it looks like the worm gear came out of your operator. I would bet it's still attached to the handle, or at least it was when it came out; it would have looked like a corkscrew.

This happens when a handle is over-torqued one way or the other during operation. Unfortunately, however it happened, it is irreparable. You will need an all new operator.

We can help with that, but I will need a clear photo of the operator out of the window. Right now all I can say is that it's a Truth brand assembly, but that only narrows it down so much. Let me know if it's possible to see it without obstruction.

The cover and handle match our 39-107 and 39-114L, respectively, but you can probably reuse the originals. They don't appear damaged.

Sure! Looking at the different Truth operators that use this same style base, the cost could be anywhere from $30 to $50 dollars per operator.

I'll make a list of the different parts I'm looking at for your reference. You may be able to pick out the match yourself once you see the original:

• 39-156 and 39-155
• 39-217 and 39-216
• 39-381 and 39-382
• 39-333 and 39-334
• 39-035 and 39-036
• 39-031 and 39-032

Keep in mind that this list isn't necessarily definitive, but they are the most common. I am fairly confident that it's at least one of these. Please also note that all pairs are sold separately.

That's a huge help, thank you! Looking at these photos, my top pick is the 39-031 and 39-032. You should just check to make sure the arm sizes are the same, especially the smaller link arm. It looks like it is but you can never be too safe.

If the link arm is too long, our 39-155 and 39-156 may be a better option.

Dimensions for 39-032

Dimensions for 39-156

I haven't come across a version of these operators with an 8-1/2" long arm. I would recommend double-checking to make sure that you are measuring from the center of the base to the end of the arm as shown in our diagram. 

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