MIXER TRUCK

The present invention relates to a concrete mixer truck (10) with superstructures that are fastened by means of an auxiliary frame (20) to the chassis frame of a chassis (14), wherein the superstructures comprise drum bearing blocks (24) for receiving the mixer drum (22). According to the invention, shaped pieces (40) are arranged on the auxiliary frame (20), on which the drum bearing block (24) rests and which have at least one groove (42) aligned transversely to the longitudinal orientation of the auxiliary frame (20), into which an alignment bolt (44) can be inserted, on which the drum bearing block (24) can be aligned and fixed with a defined bore (46).