TM 5-3805-260-24GOVERNOR PARTSFUEL SYSTEM COMPONENTS23. Piston for dashpot governor. 24. Spring fordashpot governor. 26. Spring seat. 27. Overfueling spring. 28.Thrust collar.When governor springs (25i are put in compression,the spring seat at the front of the governor springs willmake contact with load stop lever (2). Rotation of theload stop lever moves load stop pin (17) up until the loadstop pin comes in contact with the stop bar or stopscrew. This stops the movement of thrust collar (28),the connecting levers, and sleeve control shafts (19). Atthis position, the maximum amount of fuel per stroke isbeing injected by each injection pump.The carrier for governor weights (30) is held on therear of camshaft (13) by bolts. Engine rpm goes up,injection pump camshaft (13) turns faster. Any changeof camshaft rpm will change the rpm and position ofgovernor weights (30). Any change of governor weightposition will cause thrust collar (28) to move. Asgovernor weights (30) turn faster, thrust collar (28) ispushed toward governor springs (25). When the force ofgovernor springs (25) is balanced by the centrifugal forceof the governor weights, sleeves (32) of the injectionpumps are held at a specific position to send aspecific amount of fuel to the engine cylinders. Whenthe governor control lever is turned toward the FUEL-OFF position with the engine running, there is areduction of force on governor springs (’5). Themovement of the linkage in the governor will cause fuelcontrol shafts (19) to move sleeves (321 down, anti lessfuel will be injected in the engine cylinders. To stop theengine, turn the ignition switch to the "OFF" position.This will cause the slut-off solenoid to move linkage inthe fuel pump housing. Movement of the linkage willcause sleeve levers (3 1 ) to move sleeves (32) down,and no fuel is sent to the engine cylinders. With no fuelgoing to the engine cylinders, the engine will stop.14. Housing for fuel injection pumps. 19. Sleevecontrol shafts. 31. Sleeve levers. 32. Sleeves.FLOW OF FUEL USING THE PRIMING PUMPWhen the handle of priming pump (2) is pulled out,negative air pressure in priming pump (2) opens checkvalve (A) and pulls fuel from fuel tank (7). Pushing thehandle in closes check valve (A) and opens check valve(B). This pushes air and/or fuel into housing (14)through the fuel passages and check valve (C). Moreoperation of priming pump (2) will pull fuel from fuel tank(7) until the fuel lines, fuel filter (9) and housing (14) arefull of fuel. Do this until the flow of fuel from manualbleed valve (5) is free of air bubbles. Relief valve (10)will open and let the fuel go to the inlet for fuel primingpump (2) if the pressure gets higher than 20psi (140 kPa) when using priming pump (2).CONSTANT BLEED VALVECONSTANT BLEED VALVE4. CONSTANT BLEED VALVE. D. Check valve2-9
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