An earth working
machine (10) encompasses a
machine body (13) having a
machine frame (12) and a drive configuration (46), rotationally drivable relative to the machine frame (12) around a drive axis (A), to which configuration a working apparatus (32) embodied for earth working is releasably connected in torque-transferring fashion, in an operating position operational for earth working, for rotation together around the drive axis (A), such that when the connection is released, the working apparatus (32) is removable from the operating position in an axial direction relative to the drive configuration (46) for deinstallation from the drive configuration (46) and, for installation on the drive configuration, is conveyable into the operating position in an axial direction relative to the drive configuration (46).According to the present invention, there is provided on the drive configuration (46) an
actuator (65) that encompasses an
actuator member (63), movable relative to the drive configuration (46), which, when the working apparatus (32) is located, in preparation for installation thereof on the drive configuration (46), in a preparation position located axially remotely from the operating position, is conveyable directly, or indirectly with interposition of a
coupling structure (94a), into installation force-transferring engagement with a counterpart
coupling structure (74g) of the working apparatus (32), the working apparatus (32) being capable of being brought by the
actuator (65), upon establishment of an installation force-transferring engagement, from the preparation position closer to the operating position.