On the hard lines use a side cutter and nip the lines off at the fittings. Dribble some brake fluid on the fittings where they screw in ahead of time. GREAT stuff for freeing up rusted fittings. Then, to get fittings off, use a 6 point socket (not 12) over the line nut to get it broken free. If you go with a line wrench or a open end and round off the fitting, there is all hell to pay. You may have to pound on an undersized socket or, another trick, you can use aluminum foil to act as a space filler to get a good grip on the fittings. You put a layer or 2 into the socket and then tap it over the fitting. Or you can use a vise grip tye wrench. Just watch out for breaking the fitting off from the female end. You do that it is time to replace more parts....