Have you had any success with starter rebuild kits e.g. Victory Lap kits available from PartsAmerica?
Many years ago, I tried rebuilding the starter from the 4.9l F250 that I had with a Victory Lap kit and I gave up and bought a used starter from a scrap yard. Soldering the wires for the brushes was almost impossible. Since that attempt, I never tried rebuilding a starter myself.
Alternators are easier and I can install a rebuild kit on an alternator. Perhaps it was just the Ford starter that was hard to rebuild.
Many years ago, I tried rebuilding the starter from the 4.9l F250 that I had with a Victory Lap kit and I gave up and bought a used starter from a scrap yard. Soldering the wires for the brushes was almost impossible. Since that attempt, I never tried rebuilding a starter myself.
Alternators are easier and I can install a rebuild kit on an alternator. Perhaps it was just the Ford starter that was hard to rebuild.