MIL-PRF-62678B
3.2.1 Recycled, recovered, or environmentally preferable materials. Recycled,
recovered, or environmentally preferable materials should be used to the maximum extent
possible provided that the material meets or exceeds the operational and maintenance
requirements, and promotes economically advantageous life cycle costs (see 4.6.1).
3.3 Design and construction. The design and construction of the pumps shall be in
accordance with figure 1 with the exception of the thread designation for inlet/outlet connections
(see 6.2) and the electrical connector, which shall conform to MS27142-2 (see 4.6.1 and 4.6.2).
3.3.1 Filter. The pump shall incorporate a filter to protect the fuel supply system. The
filter shall be freely removable for cleaning (see 4.6.1).
3.3.2 Inlet/outlet connections. The inlet and outlet connections shall be threaded to
interface with the mating threaded part and shall protrude from pump body enough to facilitate
mechanical connection of fittings. Installation design shall allow 7.92 ±0.790 millimeters (mm)
(0.312 ± 0.031 inch (in.)) variation between planes of faces of inlet and outlet (see 4.6.2 and 6.2).
3.3.3 Electrical connector and cable. The electrical connector shall be as specified in the
applicable drawing or standard (see 6.2). Cable shall be No. 14 American Wire Gauge (AWG)
and shall conform to MIL-DTL-13486/1-5 or equivalent. A separate cable ground shall be used,
with installation clearance as indicated in figure 1, view A. Cable shall exit pump within or
before area marked "CABLE CLEARANCE". Both cable and cable ground shall be exterior to
pump body (see view A). Installation shall allow for cable assembly clearance (see 4.6.2).
3.3.4 Interchangeability. All pump parts shall be interchangeable with parts of other
manufacturers having the same military part number.
3.4 Performance.
3.4.1 Output. The pump output for all types shall equal or exceed the performance
curves specified in figure 2. The pump shall operate at a nominal voltage of 12 or 24 Vdc within
the voltage range listed in table I. During testing, the load current shall not exceed 1.75 amperes
(see 4.6.3.1).
TABLE I. Voltage.
Nominal Minimum Maximum
voltage
voltage
voltage
12
6
18
24
18
30
3.4.2 Dielectric strength. When operating the pump with the internal ground and the
radio suppressor ground strap disconnected, insulation shall show no loosening, cracking,
charring, burning or smoking (see 4.6.3.2).
3.4.3 Electromagnetic interference suppression. The pump shall meet the requirements
of MIL-STD-461 for the applicable methods (see 4.6.3.3).
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