Abstract: An apparatus for supporting an air actuated plate cylinder to facilitate installation or removal of a print sleeve includes a support frame supporting the first end of the plate cylinder, a gantry mounted on the support frame, first and second carriages mounted for selective movement along the gantry and including first and second air cylinders which are operable to move their respective rams along a predetermined path of travel, and a support member engageable with the second end of the plate cylinder and which is further engageable by one of the rams made integral with one of the carriages, and wherein the print sleeve to be installed or removed is telescopingly received on the support member and wherein the respective rams are selectively moved into and out of respective supporting relationship relative to the second end of the plate cylinder thereby facilitating the installation of the print sleeve.