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