Abstract: An improved device is provided for lifting the drum of a concrete mixer vehicle, wherein the drum has an encircling ring structure. The device includes a body mechanism having a body side wall and an inverted cup with a cavity for receiving a jack, a clamp mechanism wherein a cleat lower wall thereof is slidably adjustable relative to a lower wall of the body mechanism such that a cleat side wall is adjustable toward and away from the body side wall to clamp the ring structure between the body side wall and the cleat side wall, and a stabilizing mechanism for stabilizing the body mechanism relative to the mixer vehicle drum. The device may also include an adapter configured to also be slidably adjustable relative to either the body side wall or the cleat side wall.