Tom from SWISCO responded:
October 17, 2013
Ah. I see the problem. You ordered the 39-188, when I think you needed the 39-090. The difference is very slight, and it can be hard to notice at first. Basically, I see the 39-090 as having a "Z" shaped gear arm while the 39-188 has a "W" shaped gear arm. Not the best description, I know, but after staring at these guys as long as I have it's the clearest distinction I can make.
Check out our 39-090 and carefully compare its dimensions and style to your original operator and let me know if you agree that it's a match. For future reference, I wouldn't go by stamps alone when finding replacement hardware. Some companies use the same stamps over a whole range of products, and many of those products only have slight differences, like these operators. |