Vols. for 1955-62 include: Mining guidebook and buying directory.The Locomotive Instruction Book Lubrication Chart should be consulted for proper grease and correct amount. ... Bushings a The worn brake rigging on many earlier locomotives can be saved by installing bushings at the wear points. ... aBe careful in working on air-operated electric equipment to remember that the magnet valve can be operated manually. ... sequence table in the schematic diagram for newer General Electric locomotives gives the ohmic value for each controller step.