Caradco casement window operating mechanisms

A quick learner from New Jersey says:
May 25, 2012
Hello,

Trying to find correct replacement parts for Caradco casement windows. There are two different style operating mechanisms.

The smaller bay window, has Truth hardware with # 30637 stamped on longest part,about 4 1/2".

One of the other windows has Entry Guard Truth #20755 stamped on it, and has what looks like a 9 1/2 arm.

Is there a way to match parts based on the #'s?

I have also attached a few photos.
Thanks......
A user submited photo of window operator
A customer submitted photo of a window operator.
Profile picture of Dave Sr.
Dave Sr. from SWISCO responded:
May 25, 2012
Thanks for posting!
For the operator stamped 30637, please see our 39-035 & 39-036 Truth hardware Entrygard Dyad Window Operators.

As for the operator stamped 20755, please see our 39-155 & 39-156 Caradco Window Cranks.

Make sure to compare the dimensions of your operators to those I have suggested and let us know if they differ in any way.
Caradco Window Crank, 9-1/2"
Caradco Window Crank, 9-1/2"
39-155
$29.85
Caradco Window Crank, 9-1/2"
Caradco Window Crank, 9-1/2"
39-156
$29.85
Truth Hardware Entrygard Dyad Window Operator
Truth Hardware Entrygard Dyad Window Operator
39-035
$32.30
Truth Hardware Entrygard Dyad Window Operator
Truth Hardware Entrygard Dyad Window Operator
39-036
$32.30
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