An equipping apparatus for and method of equipping a filling tube is provided. The equipping apparatus includes a feed device for feeding a gathered tubular case to a case gripping device, and a case gripping device having gripping elements for gripping and orienting a gathered tubular case. The equipping apparatus further includes a pushing-on member moveable axially relative to a filling tube longitudinal axis for pushing the case on to a filling tube. A detecting device is associated with the gripping elements for sensing the position of at least one of the gripping elements.