So about a month ago a caliper seized on the 80 while
@SaintAgatha was driving it on a very steep trail on our property.
The good news, is that I had almost all the stuff to replace all the brakes on the shelf. The bad news is I just had to do it.
So Nancy helped me disassemble the front axle...
And I finally got around to redoing the knuckles, trunion bearings, wheel bearings, etc.... All new brake everything (not pictured here are the new Slee flexible lines, which I did later.
Then I turned my attention to the rears. One side was dry, but the other decidedly wasn't.
All cleaned up, with new everything and they look much better. Parking brake works again pretty well too.
And since I had replaced basically everything (including the flexible lines) I figured I might as well go whole hog and finish it all.
The ADVICS master cylinder is surprisingly inexpensive, and Rockauto had the booster on sale. It's Cardone, but it's not leaking like my original was.
...So that's the brakes gone through (took more than a day though).