Tom from SWISCO responded:
March 12, 2021
Looks like you might just need a new pivot shoe. If so, see our 15-192. If you also need the springs then I recommend the Series 170 and Series 171. The video below will show you how these parts work together. |
Tom from SWISCO responded:
March 29, 2021
There aren't different sized wheels to my knowledge, but that is evidently the case. You must have a version I'm not familiar with, perhaps an older type used by another window manufacturer. You could always replace the whole setup with the hardware we showed in that video I posted above. The covers and drums we sell are the 15-156 and 15-157, respectively. Each of these work with one spring. |