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CAUTION
TM 55-2915-335-30&P
(1)
(2)
(3)
2-25. FUEL BOOST PUMP / CARTRIDGE - FINAL TEST (Cont)
2-25
5. FLOW TESTING PUMP - BOOST PUMP, CARTRIDGE AND ASSEMBLY
a. Test Equipment Setup.
Apply pressure directly over valve spring when opening or closing
valve stem assembly. Trying to compress valve spring from free end
of valve arm will cause valve arm to bend. When removing or install-
ing shoulder screw, keep valve arm depressed.
NOTE
Calibration fluid temperature must be from 68° to 78°F (20 to 25°C)
to get accurate test results.
Fill test tank with calibration fluid (Item 2, Appendix C). Fluid level must be from 3 to 4 inches (76 to 102
mm) above the top surface of the pump canister.
Check that DC power supply switch is OFF. Connect positive power supply lead to positive terminal (16).
Connect negative power supply lead to valve stem (15).
NOTE
If harness is installed on pump and housing assembly, black lead is
positive and white lead is negative.
Check outside of pump, around housing and boost cartridge. Make sure there is no evidence of test fluid
leakage. Outside of pump should be dry.
LEGEND
17. FLOW CONTROL VALVE
18. POWER ON/OFF SWITCH
19. VOLTMETER
20. FLOWMETER
21. PRESSURE GAGE
22. AMMETER
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