PM Locomotive Crane Diagram Book 1946

21 sheets on 8 ½ x 14 paper. Reprinted from the original document that was issued by the PM Advisory Mechanical Committee. Mechanical Diagrams were used by most American railroads to document their locomotives and rolling stock, as did the C&O. These drawings, generally called "mechanical diagrams", were intended for use in supplying members of the railroad's mechanical department with a ready reference about the equipment concerned. They included a dimensional drawing, and listing of capacity, weights, clearances, and appliances, parts, types of brakes, builder, and date built, etc. These diagrams were assembled into books, which were supplied to mechanical personnel at each terminal and principal location on the railway so that they would have immediate data on any type of the company's equipment when it was in their territory or needed maintenance enroute. Modelers, be sure to notice which cranes have Arch Bar trucks, and which ones do not!