Why does your power steering not work on your 1987 Toyota Tercel?

Check your power steering fluid level , belt tension if ok replace pump The power steering pressure lines travel from the p/steering pump on the passenger side of the engine to just beneath the radiator (in the frame that holds the radiator) then the 2 lines go accross and underneath the radiator frame to the drivers side and then to the steering column. This course does place the lines in a somewhat exposed area vunerable to rocks/ledges that might be hit in a field. My lines flexed a bit then rusted thru where they were bent. I have to replace or weld/solder them yet as there is a leak there. TC