Abstract: Piston-removing apparatus including a frame portion, a piston-supporting portion, and an actuating portion; the frame portion including an elongated base section, an end member extending from the base section substantially perpendicular thereto; the piston-supporting portion including an upstanding member disposed along the length of the base section intermediate the ends thereof, the upstanding member extending substantially perpendicular to the base section and being disposed substantially parallel to the end member, the upstanding section including a central opening therethrough, a channel connecting the central opening with the periphery of the upstanding member at a point remote from the base section, a piston-aligning member removably engageable with the central opening in the upstanding member, the piston-aligning member including a sleeve section and a flange section, the sleeve section having an outside diameter slightly smaller than the central opening for insertion therein, the flange section being