"Brake Failure" (luckily still on jack stands)

peel the outer (dust)seals back, and if you see corrosion or fluid the cup seals are leaking. I don't know if new wheel cylinders are available for your app or not, but you may be able to put a kit in them. I used to do that all the time, you just need to hone out the cylinders. It used to be just a couple of dollars for each kit, but that was decades ago.