We just bought a '85 Subaru gl wagon. All of the sudden the break are locking up on it. We changed the front rotors and the break caliper on the left side but they continue to lock up.
The slides might be stuck or gummed up really badly. Not letting the pads move back away from the rotor. And your adjuster for the hand brake may need to be adjusted. I would look for a forum related to your model and search for threads on brake maintenance.
And that could be an adjuster at the hand brake or at the caliper per the design. That is, if it has an additional adjuster at the caliper. There are several designs I think. Come on back and let me know what you find out :) Best regards,