Earth working machine having a filtered dust extraction system with an elastically deformable filter housing

A method of cleaning a filter housing of a mobile earth working machine, the mobile earth working machine including:

• a working apparatus configured to remove material from a region of a substrate;
• and
• an extraction device configured to extract dust-laden air generated by the working apparatus from at least one machine region at at least one extraction location, and to exhaust extracted air at a discharge location different from the extraction location, the extraction device including a filter apparatus arranged along an operational flow path from the at least one extraction location to the discharge location, the filter apparatus including:
• a filter housing including at least one deformable wall;
• a filter element received in the filter housing, the filter element being configured to remove dust particles from the air flowing through the filter apparatus;
• and
• a deformation actuator arrangement;
• the method comprising steps of:
• actuating the deformation actuator arrangement to interact with and transfer force to the at least one deformable wall;
• as a result of the actuating step, flexing the at least one deformable wall such that the at least one deformable wall curves out of or into the filter housing;
• and
• wherein the flexing causes accumulated dust particle material to flake off from the at least one deformable wall.