Abstract: Apparatus (100) for pulling a projecting tube (14) from a tube sheet (12), along the tube axis (18), comprising a base (200) for engaging the tube sheet and a jacking assembly (300) mounted on the base and actuable by a first fluid pressure variation between extended and retracted positions (302) away from and toward the base respectively. A substantially annular gripper assembly (400) is connected to the jacking assembly for extended and retracted movement therewith and adapted to coaxially receive the tube. The gripper assembly includes a housing (404) having a gripper piston chamber (410) in which a second fluid pressure variation can be introduced into the gripper piston chamber. A gripper piston 420 is situated for movement in the gripper piston chamber in response to the second fluid pressure in the chamber.