Disc brake protective cover plate

In a tractor loaded vehicle having wheels equipped with multiple air-over-hydraulic, external dry caliper disc brake units, wherein two disc brake units are fluid connected to a main disc brake unit by tubing extending along an external side of a radial brake unit mounting flange on a wheel axle housing and each brake unit having brake fluid bleeder means for bleeding hydraulic brake fluid from the units, a disc brake protective cover comprising:

• a circular flat plate member having a cylindrical wall projecting into a hub region of the wheel and surrounding the three disc brake units mounted to the radial flange on the wheel axle housing, the circular plate member having a diametrically extending slot cutting through the cylindrical wall and mounted over the axle housing;
• four spacer tubes mounted to the circular plate member inside the cylindrical wall;
• and
• four mounting bolt means extending through respective holes provided in the circular plate member axially aligning with the spacer tubes for mounting the protective cover to the radial flange, the holes in the circular plate member and the four spacer tubes being positioned to the circular plate member, two each with centers on an inner circle and two each with centers on a concentric outer circle, and the radial flange being provided with inner and outer bolt holes with centers on inner and outer bolt hole circles coinciding with the inner and outer circles of the circular plate member and having four bolt holes axially aligning on the centers of the circular plate member holes and associated spacer tubes.