When the adjustment available has all been taken up it is often possible to extend the life of the brake linings by packing the brake shoes from the cam. Suitable packings can be cut comparatively easily from sheet steel and are readily fitted. Cut two strips for each brake and fit them between the slipper and the shoes. Take off the shoes and fit one packing to each shoe. Before refitting the shoes, see that the rivet heads are well below the surface of the linings. If not - punch them down a little. Should new linings or replacement shoes with new linings be fitted, always smear the surface of the linings with the very slightest film of grease. This reduces the possibility of the drums becoming scored and ridged, and although the efficiency of the brakes will at first be affected, it will rapidly improve and the brakes become perfectly normal.