The invention relates to a brake unit and a method for maintaining a brake unit, wherein the brake unit comprises a carrier unit and a jaw unit, wherein the carrier unit can be secured to the fixed portion of a utility vehicle chassis and has a first guiding member and a second guiding member, wherein the first guiding member and the first guiding member are spaced apart from each other, wherein the jaw unit is secured by the guiding members against displacement in a guiding direction, wherein the jaw unit is secured by a securing element which can be secured to one of the guiding members against displacement along an axial line, wherein the jaw unit can be displaced in an actuation direction.