Hy 1954 3800 1 Ton, I am assuming you have removed the screws which retain the drum to the hub? You could remove the axle and the outer hub bearing, that would allow you tilt/twist the drum/hub assembly around. You could also remove the wheel cylinder retaining bolts and brake line and push the wheel cylinder in and down, that may allow the brake shoes to disengage from the wheel cylinder and collapse inward releasing their hold on the brake drum
