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  TM 5-2420-222-20-1
FUEL SYSTEM - CONTINUED
FUEL METERING PUMP
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Distributor type injection pump driven by crankshaft through timing gear train.
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Delivers fuel under high pressure to each fuel injection nozzle at correct time for fuel burning efficiency at each
cylinder.
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Houses fuel shutoff solenoid which cuts off fuel flow when ignition circuit is interrupted, to shut down engine.
FUEL METERING PUMP-TO-FUEL INJECTION NOZZLE INLET TUBES (4)
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Route pressurized fuel from fuel metering pump to four fuel injection nozzle inlets.
FUEL METERING PUMP-TO-FUEL INJECTION NOZZLE LEAK-OFF CAP TUBE
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Routes excess fuel and any air through fuel injection nozzle leak-off caps for return to fuel tank.
FUEL INJECTION NOZZLES (4)
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Activated by pressurized fuel distributed by fuel metering pump.
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Atomize fuel and spray it into combustion chambers of each cylinder in turn.
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Excess lubricating fuel is directed to leak-off caps for return to fuel tank.
LEAK-OFF CAP-TO-FUEL TANK FUEL LINE
·
Routes excess fuel from fuel injection nozzle leak-off caps back to fuel tank.
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