TM 9-2320-366-34-12-23FUEL INJECTOR TESTWARNING(1) Raise cab (TM 9-2320-366-10-1).(2) Remove valve cover (TM 9-2320-366-20-3).Use extreme care when openingcab door with cab raised. Failureto comply may result in injury topersonnel or damage to equipment.(3) Open cab door.(4) Start engine (TM 9-2320-366-10-1).NOTEActuating the control shaft leverplaces the injector in the Fuel Onposition for a few seconds. Thiscauses excess fuel to be injectedinto that particular cylinder,causing a loud combustion knock.(5) Actuate No. 1 cylinder control shaft lever.(6) If actuating fuel injector does not result in aloud combustion knock, fuel injector is faulty.(7) Repeat step (5) for remaining injectors.(8) Shut down engine (TM 9-2320-366-10-1).(9) Close cab door.(10) Install valve cover (TM 9-2320-366-20-3).(11) Lower cab (TM 9-2320-366-10-1).
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