After removing the push rods and boots, press the pistons, cups and spring and expander out of the cylinder bore, then take out the bleed screw. To set up, lubricate the wheel cylinder bore, pistons, piston cups and spring and expander with clean brake fluid before use. Sing the first piston into the cylinder bore and put the first cup on, with the cup's lip toward the spring and expander and the flat side touching the piston. After that, attach the spring and expander and finish the installation with the last piston cup and piston. Next, set the boots onto the ends of the cylinder, pass the push rods through the boots and restore the cylinder bleed screw.