1、Comments, suggestions, or questions on this document should be addressed to U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501 E. 11 Mile Road, Warren, MI 48397-5000 or emailed to DAMI_STANDARDIZATIONconus.army.mil. Since contact in
2、formation can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 2910 METRIC MIL-PRF-62678B 19 January 2010 SUPERSEDING MIL-PRF-62678A 22 November 1995 PERFORMANCE SPECIFICATION PUMP, FUEL, ELECTRICAL:
3、12 AND 24 VOLT DIRECT CURRENT (METRIC) This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers two types of electrically operated, in-line fuel pumps for use with 12 and 24 volt direct current (Vdc) automotive
4、 electrical systems (see 6.1). 1.2 Classification. Pumps are classified according to type, voltage, polarity, and metric thread designation, as specified (see 6.2 and 6.3). Type I - Standard duty (630 hours) Type II - Long life (5040 hours) Grade: 1 - 12 Vdc nominal 2 - 24 Vdc nominal Class: 1 - Neg
5、ative ground 2 - Positive ground Thread designation: 1 - 1/8-27 NPTF Female 2 - 1/4-18 NPTF Male 3 - 1/4-18 NPTF Male Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62678B 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this s
6、ection are specified in sections 3 and 4 of this specification. This section does not include documents in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cauti
7、oned that they must meet all specified requirement documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this document
8、to the extent specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or contract (see 6.2). FEDERAL SPECIFICATIONS A-A-52557 - Fuel Oil, Diesel; for Posts, Camps, and Stations DEPARTMENT OF DEFENSE SPECIFICATIONS MIL-DTL-5624 - Turbine Fuel, A
9、viation, Grades JP-4, JP-5 and JP5/JP-8 ST. MIL-DTL-13486/1 - Cable, Special Purpose, Electrical: Low Tension, Heavy-Duty, Single-Conductor, Unshielded. MIL-PRF-680 - Degreasing Solvent DEPARTMENT OF DEFENSE STANDARDS MIL-STD-461 - Requirements for the Control of Electromagnetic Interference Emissio
10、ns and Susceptibility. MS27142 - Connector, Plug, Electrical - Pin Contact No. 12, 14, and 16 A.W.G., Waterproof. (Unless otherwise indicated, copies of the above specifications and standards are available from the Document Automation and Production Service, Building 4/D, 700 Robbins Avenue, Philade
11、lphia, PA 19111-5094 or website: http:/assist.daps.dla.mil/quicksearch/.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the is
12、sues of these documents are those cited in the solicitation or contract (see 6.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62678B 3 NUCLEAR REGULATORY COMMISSION (NRC) Code of Federal Regulations (CFR) - Title 10, Part 30 and 40 (Copi
13、es of the Code of Federal Regulations (CFR) are available from the U.S. Government Printing Office, 732 North Capitol St. NW, Washington, DC 20401 or website: http:/www.gpoaccess.gov/cfr/.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified
14、herein. Unless otherwise specified, the issues of the documents are those cited in the solicitation or contract (see 6.2). AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM B117 - Salt Spray (Fog) Testing, Method of. ASTM D235 - Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solv
15、ent) Specification For. ASTM D471 - Standard Test Method for Rubber Property-Effect of Liquids. ASTM D4814 - Standard Specification for Automotive Spark-Ignition Engine. ASTM G21 - Standard Practice for Determining Resistance of Synthetic Polymeric Materials to Fungi. (Application for copies of ASTM
16、 publications may be obtained from the American Society for Testing and Materials, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959 or website http:/www.astm.org/.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited here
17、in, the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accorda
18、nce with 4.3. 3.2 Materials. Materials used shall be in accordance with the manufacturers materials specifications for pumps. The materials shall be capable of meeting all the operational and environmental requirements specified herein. Asbestos, cadmium, and radioactive material shall not be used i
19、n this item. Radioactive material is defined by CFR, Title 10, Parts 30 and 40, and other radioactive material in which the specific activity is greater than 0.002 microcuries per gram or the activity per item equals or exceeds 0.01 microcuries (see 4.6.1). Provided by IHSNot for ResaleNo reproducti
20、on or networking permitted without license from IHS-,-,-MIL-PRF-62678B 4 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 oper
21、ational 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) an
22、d 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 sha
23、ll 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
24、 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
25、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
26、 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
27、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 voltage Minimum voltage Maximum voltage 12 24 6 18 18 30 3.4.2 Dielectric strength. When operating the pump with the internal ground and the radio suppressor ground strap
28、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). Provided by IHSNot for ResaleNo reproduction or networ
29、king permitted without license from IHS-,-,-MIL-PRF-62678B 5 3.4.4 Fuel resistance. The pump shall evidence no damage or leakage when submerged in fuel for 336 hours minimum and shall subsequently meet the performance requirements as specified in 3.4.1 (see 4.6.3.4). 3.4.5 Environmental. 3.4.5.1 Ext
30、reme temperature resistance. Pump fuel flow, at any given pressure, shall be not less than 67 percent (%) of the value reflected by the performance curves of figure 2, in ambient temperatures ranging from -54 to +71 degrees Celsius (C) (-65 to 160 degrees Fahrenheit (F) (see 4.6.4.1). 3.4.5.2 Fungus
31、 resistance. If all materials used in construction are not metallic, the pump shall evidence no damage when subjected to fungus and high humidity conditions for 90 continuous days and shall subsequently meet the performance requirements as specified in 3.4.1 (see 4.6.4.2). 3.4.5.3 Vibration resistan
32、ce. The pump shall evidence no damage or leakage and shall subsequently meet the requirements as specified in 3.4.1 when subjected to a simple harmonic motion amplitude of 0.76 mm (0.03 in.) at a frequency range from 10 to 55 Hertz (Hz) and return to 10 Hz in approximately 1 minute. This motion shal
33、l be applied for a period of 2 hours in each of three mutually perpendicular axes (total 6 hours) (see 4.6.4.3). 3.4.5.4 Shock resistance. The pump shall evidence no damage or leakage and shall meet the requirements as specified in 3.4.1 when subjected to sawtooth wave shocks of 25 gravity units (g)
34、 at 18 milliseconds (ms) along three mutually perpendicular axes (see 4.6.4.4). 3.4.5.5 Corrosion resistance. The pump shall evidence no damage or leakage due to corrosion and shall subsequently meet the requirements as specified in 3.4.1, when subjected to a salt laden atmosphere for a minimum of 1
35、00 hours (see 4.6.4.5). 3.4.6 Endurance. The pump shall maintain a delivery versus pressure relationship not less than that specified in Figure 2 for a period described below (see 4.6.5.1): Type I - 630 hours Type II - 5040 hours 3.5 Marking. Pump marking shall include, as a minimum, the following i
36、nformation permanently marked on the exterior of the pump (see 4.6.2): a. Pump, fuel, electrical b. Manufacturers identification c. Military part number d. Polarity e. Voltage Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62678B 6 f. Federa
37、l stock number g. Manufacturers part number h. Date of manufacture i. U.S. j. Inlet shall be marked “IN” and outlet shall be marked “OUT.” 3.6 Workmanship. Workmanship shall be such as to assure a product free of chips, burrs, sharp edges, rust, loose or defective connectors, or faulty soldering and
38、 shall not compromise, limit or reduce the capability of the pump in the performance of its intended use (see 4.6.2). 4. VERIFICATION 4.1 Classification of inspections. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.3). b. Conformance inspe
39、ction (see 4.4). c. Control tests (see 4.5). 4.2 Inspection conditions. Unless otherwise specified (see 6.2), all inspections shall be conducted under the following conditions: a. Air temperature: 24 10C (75 50F) b. Barometric pressures: 96 (+7, -10) kilopascals (kPa) (13.9 (+1.04, -1.4) pounds per
40、square inch (psi) c. Relative humidity: 50 30% 4.3 First article inspection. First article inspection shall be performed on seven samples of each type, grade, and class when a first article sample is required (see 3.1 and 6.2). This inspection shall include the examinations of table V and the tests
41、of table II. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62678B 7 TABLE II. Classification of inspections. Conformance Title Requirement Inspec- tion First article Exami- nation Tests Con- trol Group A: Materials and construction 3.2 thru
42、 3.3.1 4.6.1 X Defects (see 4.6.2 and table V) 3.3, 3.5 and 3.6 4.6.2 X X X Group B (Performance): Output 3.4.1 4.6.3.1 X Dielectric strength 3.4.2 4.6.3.2 X X X Electromagnetic interference suppression 3.4.3 4.6.3.3 X X Fuel resistance 3.4.4 4.6.3.4 X Group C (Environmental): Extreme temperature re
43、sistance 3.4.5.1 4.6.4.1 X Fungus resistance Vibration resistance Shock resistance Corrosion resistance 3.4.5.2 3.4.5.3 3.4.5.4 3.4.5.5 4.6.4.2 4.6.4.3 4.6.4.4 4.6.4.5 X X X X X X Group D (Life): Endurance 3.4.6 4.6.5.1 X 4.3.1 First article test sequence. First article tests shall be conducted on t
44、he samples in accordance with the test sequence specified in table III. TABLE III. Order of first article testing. Sample No. Test Paragraph No. 1 Output Endurance Output 4.6.3.1 4.6.5.1 4.6.3.1 2 Output Dielectric strength 4.6.3.1 4.6.3.2 3 Output Electromagnetic interference suppression 4.6.3.1 4.
45、6.3.3 TABLE III. Order of first article testing - Continued. Sample Test Paragraph No. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-62678B 8 No. 4 Output Extreme temperature resistance Output 4.6.3.1 4.6.4.1 4.6.3.1 5 Output Fuel resistanc
46、e Output 4.6.3.1 4.6.3.4 4.6.3.1 6 Output Vibration resistance Output Fungus resistance Output 4.6.3.1 4.6.4.3 4.6.3.1 4.6.4.2 4.6.3.1 7 Output Shock resistance Output Corrosion resistance Output 4.6.3.1 4.6.4.4 4.6.3.1 4.6.4.5 4.6.3.1 4.4 Conformance inspection. Conformance inspection shall include
47、 the examinations of 4.4.2 and the conformance tests of table II. Failure of any tests shall be cause for rejection. 4.4.1 Sampling plan. Unless otherwise specified (see 6.2), the sampling plan specified herein shall be used for definitions of sampling inspection terms (see 6.4). 4.4.1.1 Lot formati
48、on. An inspection lot shall consist of all the pumps of a single type, grade, class, and part identification number (PIN), from an identifiable production period, from one manufacturer, from one manufacturing location, submitted at the same time for acceptance. 4.4.1.2 Sample. The sample for conform
49、ance inspection examinations and tests shall be randomly selected from the inspection lot in accordance with table IV. 4.4.2 Examinations. Samples selected in accordance with 4.4.1.2 shall be subjected to the examinations of table V. The acceptance number in all cases shall be zero. 4.4.3 Tests. Samples selected in accordance with 4.4.1.2 shall be subjected to
