TM 9--2815--247--34 0004 00--7 THEORY OF OPERATION -- CONTINUED 0004 00 FUEL SYSTEM -- CONTINUED N0. 1R NO. 1L N0. 2R N0. 3R N0. 4R N0. 5R N0. 6R NO. 2L NO. 3L NO. 4L NO. 5L NO. 6L FUEL RETURN HOSE CONSTANT FUEL BLEED 0.042 IN. ORIFICE PRIMARY FUEL FILTER MANUAL DRAIN FUEL/WATER SEPARATOR FUEL INJECTOR NOZZLE SOLENOID WATER DRAIN TUBE REAR HEAD TO LEFT BANK CYLINDERS PRESSURE REGULATOR VALVE FUEL RETURN HOSE FRONT HEAD TO RIGHT BANK CYLINDERS LEFT FUEL RETURN TUBE FUEL RETURN TO VEHICLE FUEL TANK RIGHT FUEL RETURN TUBE FUEL PUMP FUEL BACKFLOW VALVE (90 PSI RELIEF VALVE) FUEL METERING PUMP FUEL RETURN HOSE FUEL METERING PUMP INLET HOSE FUEL METERING PUMP Figure 1--9. Main Fuel System Schematic Diagram