TM 5-3895-383-24Fuel System (Type I)Fuel System Schematic(1) Screen (if equipped). (2) Inlet check valve. (3) Fueltransfer pump (integral with governor). (4) Outlet check valve.(5) Fuel filter. (6) Cylinder head. (7) Pressure regulatingorifice. (8) Check valve. (9) Primary fuel filter (if equipped).(10) Fuel tank. (A) Fuel priming pump(equipped).Fuel from the fuel tank is pulled through an in-line screen (1)by fuel transfer pump (3). The fuel transfer pump is integralwith the governor. Fuel is sent from the fuel transfer pumpthrough fuel filter (5) and to a drilled passage in cylinder head(6). The drilled passage in the cylinder head intersects agallery around each unit injector to provide a continuous flow offuel to all injectors.When there is air on the inlet side of the fuel system, fuelpriming pump (A) (if equipped) may be used to fill the fuel filterand fuel gallery (in the cylinder head) from the fuel tank beforethe engine is started. When the priming pump is used, checkvalves located in the fuel priming pump. Control the movementof fuel through the low pressure side of the system whichremoves air from the fuel lines and components back into thefuel tank.Fuel Filter Lines Group(3) Fuel transfer pump (integral with governor). (5) Fuel filter.(6) Cylinder head. (11) Fuel outlet port (to tank). (12) Fuelinlet port (to fuel transfer pump). (13) Fuel filter base. (14)Filtered fuel pressure tap. (15) Tube assembly (from fuel filterbase to cylinder head fuel gallery in cylinder head). (16) Tubeassembly (from transfer pump to fuel filter base).Fuel Filter Lines Group (View A-A)(1) Screen. (6) Cylinder head. (7) Pressure regulating orifice.(8) Check valve. (11) Fuel outlet port (to tank). (12) Fuel inletport (to fuel transfer pump). (16) Tube assembly (from transferpump to fuel filter base). (17) Tube assembly (return to tankfrom fuel passage in cylinder head).6-6
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