MIL-DTL-62011E
TABLE IV. Endurance test schedule.
Fuel 1/
Temperature
Test period (hours)
77±10 °F (25±5°C)
Grade 2-D
1,450
-60±5 °F (-51±3°C)
Grade 2-D 2/
50
1/ As specified in A-A-52557.
2/ Same as note 1, except that the cloud point shall be -65 °F or lower.
4.6.12 Coupling capability (static) (see 3.5.10).
a.
The pump shall be mounted in the test apparatus and the tank filled with test fuel to a
level of at least 2 inches (51mm) above the fuel pump.
b.
The operating voltage (see 4.2.2) shall be applied to the pump and pump discharge
pressure shall be adjusted to 4 psig.
c.
This voltage shall then be removed and the pump delivery allowed to return to zero gph.
d.
Within a maximum of 30 seconds after the pump delivery returns to zero, a terminal
voltage of 32+0, -0.1 V dc shall be applied and the flow rate and pressure measured.
4.6.13 Coupling capability (dynamic) (see 3.5.11).
a.
The pump, without brackets and with a 12-inch (305 mm) (min.) discharge hose attached,
shall be installed in the test apparatus .
b.
The tank shall be filled with test fuel to a level at least 4 inches (102 mm) above the base
of the pump.
c.
The pump shall be adjusted to deliver 150 gph (568 lph) at the operating voltage (see
4.2.3).
d.
The pump shall be lifted at least 3 inches (76 mm) above the fuel.
e.
When the pump stops pumping, it shall be forcefully submerged in the fuel to
approximately the same depth and the time to start pumping measured.
f.
The test shall be performed three times.
In addition, the test shall be repeated three times with the vertical axis of the pump at 45°
g.
to the fuel surface.
4.6.14 Electrical continuity (see 3.5.12). The electrical resistance between the pump housing and the
wire braid on the power cable, and between the 0.4375-28 UNEF-2A thread and the wire braid, shall be
measured using an ohmmeter.
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