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TM 55-2915-335-30&P
2-25. FUEL BOOST PUMP / CARTRIDGE - FINAL TEST (Cont)
2-25
(3)
(4)
(5)
(6)
Read and record fluid pressure at pressure gage (21). Read and record current draw at ammeter (22).
Cartridge is acceptable if fluid pressure is from 13 to 25 psig (89 to 172 kPa gage), and current draw is no
more than 6.0 amps.
Adjust fluid flow to 300 PPH. Record fluid pressure and current draw. Cartridge is acceptable if fluid pres-
sure is from 12.5 to 25.0 psig (86 to 172 kPa gage), and current draw is no more than 5.0 amps.
Close flow control valve (17). Check that flowmeter (20) reads 0 PPH. Record fluid pressure and current
draw. Cartridge is acceptable if fluid pressure is no more than 25 psig (172 kPa gage), and current draw is
no more than 6.0 amps.
Reduce voltage setting to 0 volts. Turn power switch (18) OFF. Disconnect power supply leads from pump
cartridge.
d. Shutoff Valve Leakage Test - Assembled Cartridge and Housing Only
(1)
(2)
(3)
(4)
Place catch basin below cartridge. When cartridge is removed from pump housing, a small amount of
leakage will occur from the pump housing.
Remove cartridge from pump housing. Refer to paragraph 6.b.
Some leakage from the pump housing may occur. If pump housing does not leak a steady flow of fluid, the
housing is acceptable. A steady flow or fluid leaking from the housing indicates a defect in the pump hous-
ing.
Reinstall the cartridge into the pump housing using new preformed packings.
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