STARTING AIR SYSTEM DRAWING FS 466 PRELIMINARY OPERATIONS Close air receiver drain valves V-43, V-44, blow down high pressure line valve V-45, by-pass valve ¥-36 and blow down low pressure valve V-50. Close equipment stop valve V-34. Open header valves V-38, V-40 and air receiver stop valves V-4l1 and V-42, open pressure regular (V-46) block valves V-35 and 49. Fill compressors and engine with proper amount and grade of lubricating oil, check V-belt drives for rroper tension, start engine driven compressor by hand crank after tank has been filled with gasoline. Start motor driven compressor by turning switch located in electrical panel. Adjust controls on motor driven compressor to stop when pressure reaches 250 psi and start when pressure drops to 245 psi as indicated by G-8 and G-9, TO START DIESEL ENGINE Engine starting is accomplished by the action of compressed air; open valve V-34 and admit air to the pistons in their proper firing order, Instant turnover is assured with the elimination of dead centers by admitting air to the cylinders until the engine begins to fire. Check starting air pressure on engine gauge G-10. G-10 should indicate same pressure as G-8 and G-9 before engine is started. See that all other operations are complied with before and after engine is started. For instructions to start and run engine see