SECTION V: TROUBLESHOOTlNGTM 9-2350-256-20C Check fire extinguisher engine shutoff switch forproper adjustment (see paragraph 10-6). Ensure fireextinguisher engine shutoff activated lamp is lit.D Turn MASTER switch on. Turn FUEL SHUTOFFswitch ON. Listen for a click from engine. If no clickcan be heard, troubleshoot fuel shutoff solenoidcircuit (see paragraph 2-19).E Place manual fuel shutoff handle in ON (in)position. Remove cotter pin. Place engine fuelshutoff lever in ON (up) position. Check connectorlink for a free pm fit. If a free pm fit cannot be made,make adjustments in accordance with paragraph 4-11.FTurn MASTER switch and in-tank fuel pump switchON. The electric fuel pump will make noise. If thereis no noise, troubleshoot fuel shutoff solenoid circuit(see paragraph 2-19). If there is a noise, perform thefollowing fuel flow test. Disconnect fuel tank supplyhose at engine primary fuel filter. Remove quickdisconnect. Place a 5-gallon (gal) (19-liters [L] )container in a suitable position to collect fuel fromhose. Turn MASTER and m-tank fuel pump switchesto ON position. Time fuel flow into container. Ifthere is no fuel flow or fuel flow is less than 3gallons per minute (gpm) (11 liters per minute[Lpm]), inspect fuel lines for restrictions. If there areno restrictions, troubleshoot electric fuel pump (seeparagraph 2-19).GDisconnect fuel line connecting primary fuel filterand main fuel check valve at main fuel check valve(check valve fuel inlet hose). Place fuel line in asuitable container. Place MASTER and fuel pumpswitches in ON position. If there is no fuel flow,replace primary fuel filter element (see paragraph 4-14).NOTEIf the cause of filter restriction is excessivealgae contamination, notify Direct SupportMaintenance to clean and dram fuel tanksand fill with uncontaminated fuel.H Disconnect fuel line connecting mechanical fuelpump assembly and fuel/water separator atfuel/water separator. Position a container to catchfuel. With MASTER and fuel pump switches in ONposition, crank engine. If there is no fuel flow fromdisconnected fuel line, replace mechanical (geartype) fuel pump assembly (see paragraph 4-5). Ifthere is fuel flow, reconnect fuel line and go to step I.Change 12 - 4 0 . 1
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