FUEL FLOW TESTING

INSPECTION AND REPAIR - TM-9-2350-267-34_64

FUEL PUMP ELECTRICAL (FUEL TANK) REPAIR (CONTINUED)

TM-9-2350-267-34 Hull Powerpack Drive Controls Tracks Suspension and Associated Components Carrier Ammunition Tracked Manual
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FUEL PUMP ELECTRICAL (FUEL TANK) REPAIR (CONTINUED) TEST EQUIPMENT A 0 to 20 psig direct reading fuel pressure gage. B Fuel flow meter (variable restriction) 0 to 250 gallons per hour. C Fuel container. D Voltmeter (0 to 50 volts). E Switch. F DC power supply (manually variable from 18 to 28 volts). TEST SETUP Set up fuel pump and test equipment as shown in illustration above. FUEL FLOW TESTING A B C D E Close switch to allow current flow. Adjust power source to 27.5-volt reading on voltmeter. Read pressure gage and fuel flow meter for fuel pressure and fuel flow rate. Enter pressure and flow rate readings on performance chart. Project pressure reading across chart and flow rate reading up chart (eg, pressure 5.5 psi and fuel flow rate 110 gph). Evaluate fuel pump performance from chart. If not within range, repair or replace pump. TA309703 TM 9-2350-267-34 4-7

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