Now that I've been able to remove the doors from the track, I see that the hardware doesn't look as much like Hettich 7000-series as I originally thought:
Hettich's double track (part 7003) has a profile that looks like this:
My track looks like this:
Note the recess in the underside of the track
My top plate and carrier look like this (note that the carrier is badly bent, the wheel sets should be close to parallel to each other):
Using Archive.org's Wayback Machine, I was able to find Hettich America catalogs from all the way back to 2004. None of them have a part that looks even remotely like these parts.
None of the parts have any identifying marks on them.
Other brands I have checked that do not match (both current products and old catalogs via Archive.org) include:
- Barton-Kramer
- Hafele
- Johnson Hardware - 200-series is close, but they do not make a double track, only a single I-beam track
- National Hardware
- Prime-Line
Most of those companies (except Johnson) appear to not make a bottom guide track, which my doors have.
I tried looking for the company that made the door pulls, but they are from idh by St. Simmons, which does not make tracks and carriers.
How can I figure out the brand of this hardware so I can try to find replacement parts?