Brakes do not work?

1975 Toyota Landcruiser FJ 40 2f mileage: 101,000. Well, simply put, my brakes do not work. I have replaced all the pads but nothing works, when I step on the pedal there is no pressure at all but when I pump them they seem to work fine, but once there pumped up all the way if you hit them again the pedal will go to the floor, with no pressure at all. There is plenty of fluid, and there is not a drop of fluid leaking anywhere, not at the wheel cylinders or the brake booster or at the master cylinder. Oh yeah, there are drum brakes front and back!