Paul from SWISCO responded:
July 31, 2015
You might have something like our 84-137 corner roller assembly. The adjustment screw is at the end of the door. To remove a door from the track, you would need to loosen the top rollers by turning the screw counter clockwise, which will give you enough play to remove the door. The wheels are removable if you just want to put them in the old housing, or you could use our 84-017 wheels and disregard the screw and riv-nut. What do you think?
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