1、MIL-T-2b5hLC 47 W 7977906 0247245 9 W c-11- I5 - a -*- i- I a 0 a XIL-T-2656X93JSAF) 21 Nov 84 SUPERSEDING MIL-T- 2 6 5 6 1B (U SAF ) 6 February 1979 MILITARY SPECIFICATION TESTER, TYPE MA-2 RECEPTION COUPLING BREAK-AWAY FORCE, PORTABLE This specification is approved for use by the Department of the
2、 Air Force, and is available for use by all Depart- ments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope, This specification covers the requirements for a portable tester used for checking the break-away force required to disengage the type MA-2 reception coupling. 2. APPLICABLE DOCUM
3、ENTS 2.1 Government documents. 2.1.1 Specifications and standards. Unless otherwise specified (see 6.2), the following specifications and standards of the issue listed in that issue of the Department of .Defense Index of Specifications and Standards (DoDISS) specified in the solicitation, form a par
4、t of this specification to the extent specified herein. SPECIFICATIONS FEDERAL PPP-B-601 Boxes, Wood, Cleated Plywood PPP-B-636 Box, Shipping, Fiberboard MILITARY MIL-P-116 Preservation, Methods of DOD-D-1000 Drawing, Engineering and Associated List STANDARDS FEDERAL FED-STD-151 Metal, Test Methods
5、Beneficial-comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: the Engineering Division, San Antonio ALC/MMEDO, Kelly AFB, Texas 78241 by using the self addressed Standardization Document Improvement Proposal
6、(DD Form 1426) appearing at the end of this document or by letter. FSC 4920 - PAGES THIS DOCUMENT CONTAINS Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-2b5bLC 47 M 7977706 02Ll724b O MIL-T-26561C(USAF) MILITARY MIL-STD-129 Marking for Shipme
7、nt and Storage MIL-STD-130 Identification Marking of U. S. Military Property MIL-STD-143 Standards and Specifications, Order of MIL-STD-889 Dissimilar Metals MS24536 Tester, Type MA-2 Reception Coupling Break- Precedence for the Selection of Away Force, Portable * (Copies of specifications and stand
8、ards required by manufacturers in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting officer.) * 2.1.2 Other publications. The following document(s) form a part of this specification to the extent specified herein. The is
9、sues of the documents which are indicated as DoD adopted shall be the issue listed in the current DoDLSS and the supplement thereto , if applicable. * AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D 3951 Standard Practice for Commercial Packaging, (Application for copies of ASTM publication
10、s should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelphia, Pennsylvania 19103.) * 2.1.3 Order of precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this speci- fication shall take pr
11、ecedence. 3. REQU IREMENT S * 3.1 First Article. When specified, a sample shall be subjected to first article inspection (see 4.6 and 6.3). 3.2 Selection of specifications and standards. Specifications and standards for necessary commodities and services not specified herein shall be selected in acc
12、ordance with MIL-STD-143. 3.3 Mat erials. 3.3.1 Metals. Metals shall be of the corrosion-resistant type or suit- ably treated to resist corrosion due to fuels, salt spray, or atmospheric conditions likely to be encountered in storage or normal service. 3.3.1.1 Dissimilar metals. Unless suitably prot
13、ected against electro- lytic corrosion, dissimilar metals shall not be used in intimate contact with each other. Dissimilar metals are defined in MIL-STD-889. * e i a a Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-* 3.5 Performance. The tester sha
14、ll be capable of operation by one man and perform its functions as required herein, 3.5.1 Calibration accuracy. The tester shall maintain an accuracy within plus or-minus 5 percent of the correct reading in the range of 25 to 800 pounds when tested in accordance with 4.5.2. MIL-T-2656LC 49 7779906 0
15、2472Lt7 2 W rn-T-26561 (USAP) 3.4 Design and construction. The design and construction of the tester shall conform to MS24536. The tester shall be as light as possible consistent with good rugged construction-and shall incorporate a calibrated pressure gage reading directly in pounds force from O to
16、 1,000 pounds. hydraulically actuated by the turning of a hand wheel. leakage of hydraulic fluid. The tester shall be There shall be no 3.4.1 Maintenance. The tester shall have a minimum number of parts con- sistent with reliability. assembly, disassembly, location of trouble sources, and maintenanc
17、e with tools and equipment normally available commercially, by service maintenance personnel with a minimum of training. Its design shall, where practical, permit easy 3.5.2 Temperature range. The tester shall operate satisfactorily from -65F to 1130F. than 40 pound-inches. more than 10 pound-inches
18、. The torque required to actuate the tester shall not be more The torque required to reset the tester shall not be 3.5.3 Endurance. The tester shall operate satisfactorily throughout the endurance test with no leakage or other malfunction. 3.5.4 Corrosion resistance. The tester shall withstand 50 im
19、mersion and heat cycles to a temperature of 130“ plus or minus 5F as specified in 4.5.6.1 and salt spray for a period of 50 hours as specified in 4.5.6.2 3.6 Interchangeability. All parts having the same manufacturers part number shall be functionally and dimensionally interchangeable. The drawing n
20、umber requirements of DOD-D-1000 shall govern changes in the manufacturers part number s. 3.7 Dimensions. The dimensions ahall be as shown on MS24536. 3.8 Weight. The weight of the tester shall not exceed 10 pounds. 3.9 Identification of product. The tester, and all parts, shall be marked for identi
21、fication in accordance with MIL-STD-130. 3.10 Workmanship. All details of workmanship shall be in accordance with the best commercial practice covering this type of equipment. * 3.11 Reclaimed materials. The use of reclaimed materials shall be encour- aged to the maximum extent possible. 4. QUALITY
22、ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise specified in the contract, the contractor may use his own or any other facilit
23、ies suitable for the performance of the inspection requirements specified herein, unless 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NIL-T-2b561C 47 m 797970b 0247248 4 m MIL-T-26561C(USAF) disapproved by the Government. The Government reserves
24、 the right to perform any of the inspections set forth in the specification where such inspections are deemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Classification of tests. The inspection and testing of the tester shall be classified as follows: a. Accepta
25、nce tests See 4.3 I b. First Article Inspection See 4.6 4.3 Acceptance tests. Acceptance tests shall consist of individual tests. 4.3.1 1ndividual.tests. Each tester shall be subjected to the following tests as described under 4.4. l a. Examination of product b. Calibration tests 4.4 Test conditions
26、. The test conditions shall be as specified herein for each separate test. 4.5 Test methods. 4.5.1 Examination of product. Each tester shall be examined for conform- ance to this specification with regard to materials, workmanship, dimensions, and markings; The tester shall be mounted in a vertical
27、position, with the dummy nozzle down and the unit supported by the nozzle withdrawal spider, and operated through one cycle to check for binding of other malfunction. 4.5.1.1 Cycle. A test cycle shall consist of the tester being operated, by turning the hand crank, so that the dummy nozzle travels f
28、rom the extended or normal engagement position to the retracted position, a minimum travel of 0.75 inch, and is returned to the extended position. 4.5.2 Calibration accuracy. The calibration accuracy shall be checked by The tester shall be using dead weights of 25, 100, 300, 400, 600, and 800 pounds
29、. Each weight shall be accurate within plus or minus one-fourth pound. mounted as specified in 4.5.l.and the weight shall be hung by means of a cable attached to the fitting inside the dummy nozzle. The weight should be support- ed so that there will be no load exerted on ehe cable when the tester i
30、s in the extended position. The tester shall be cycled once with each of the calibrat- ing weights. As the dummy nozzle is retracted the weight shall be lifted from its support and the gage must read within plus or minus 5 percent of the dead weight. 4.5.3 Low temperature. The tester shall be mainta
31、ined at a temperature of -65F for a period of 12 hours. of the calibrating weights listed in 4.5.2. There shall be no evidence of leakage of the hydraulic fluid or other malfunction. within the limits specified in 4.4.2. The tester shall then be cycled once with each The gage reading must be 4 Provi
32、ded by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-ELL-T-25561C (USAI?) 4.5-4 High temperature. The tester shall be maintained at a temperature of 130“ for a period of 12 hours. The tester shall then be operated once with each of the calibration weights list
33、ed in 4.5.2. There shall be no evidence of leakage of hyraulic fluid or other malfunction. The gage reading must be within the limits specified in 4.5.2. 4.5.5 Endurance. The tester shall.be operated through 1,000 cycles at room temperature using the 800-pound calibration weight. 4.5.6 Corrosion res
34、istance. Corrosion resistance shall include both accelerated and salt spray tests. 4.5.6.1 Accelerated corrosion. She tester shall be immersed in a solution consisting of 2.5 percent sodium chloride in distilled water. Ater immersion, the tester shall be drained and heated to a temperature of 130F p
35、lus or minus 5F for a period of 1 hour. This immersion and heating cycle shall be repeated 50 times. The tester shall not be actuated at any time during the above test. Immediately after completing the immersion and heat cycles, the tester shall be washed with warm water to remove all salt accumulat
36、ions, after which the tester shall be dried and actuated as in normal service. The force required to operate the handle shall not exceed that specified in 3.5.2. There shall be no evidence of deterioration that might adversely affect subsequent operat ion. 4.5.6.2 Salt spray. The tester shall be sub
37、jected to a salt spray in accordance with FED-STD-151 for a period of 50 hours. At the end of the test period, the salt deposits shall be removed with warm water. The tester shall be dried and actuated as in normal service. The force required to operate the handle shall not exceed that specified in
38、3.5.2. Any evidence of corrosion that might adversely affect the operation of the tester shall be cause for rejection. 4.6 First Article Inspection. The first article tests shall consist of all the tests specified under 4.5. 5. PACKAGING 5.1 Preservation. Preservation shall be Level A or commercial,
39、 as specif ied (see 6.2) . 5.1.1 Level A. The tester shall be preserved and packaged one each, method IC2 of MIL-P-116 and shall be individually overboxed in a fiberboard unit container conforming to PPP-B-636, class domestic. 5.1.2 Commercial. Testers shall be preserved in accordance with ASTM D 39
40、51. 5.2 Packing. Packing shall be Level A, B, or Commercial, as specified (See 6.2). 5.2.1 Level A. Testers packaged as specified in 5.1 shall be packed in wood-cleated plywood shipping containers canforming to PPP-B-601, overseas type. Gross weight of the shipping container shall not exceed 200 pou
41、nds. Container closure and strapping shall be in accordance with the appendix to PPP-B-601. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-7 f MIL-T-265bLC 47 W 779770b 02471250 2 W MIL-T-26561C (USAF) I- 5.2.2 Level B. Testers packaged as specifi
42、ed in 5.1 shall be packed in wood-cleated plywood shipping containers conforming to PPP-B-601, domestic type gross weight of the shipping container shall not exceed 200 pounds. closure and strapping shall be in accordance with the appendix to PPP-B-601. Container * 5.2.3 Commercial. Testers preserve
43、d as specified in 5.1 shall be packed in accordance with ASTM D 3951. 5.3 Marking. or order, interior packages and exterior shipping containers shall be marked in accordance with the requirements of MIL-STD-129. In addition to any special markings required by the contract The nomenclature shall be:
44、“TESTER, TYPE MA-2 RECEPTION COUPLING, BREAK-AWAY FORCE, PORTABLE“ 6. NOTES 6.1 Intended use. The portable tester covered by this specification is intended for use in checking the toggle settings to determine the break-away force of the type MA-2 reception coupling. toggle settings either individual
45、ly or combined while either installed or removed from the aircraft. The tester can be used to check the J; 6.2 Ordering data. 6.2.1 Acquisition requirements. Acquisition documents should specify the following: a. Title, number, and date of this specification. b. Selection of applicable levels of pre
46、servation, packaging and packing (see 5.1 and 5.2). 6.3. First Article When a first article inspection is required, the item will be tested and should be a first article samp.le or it may be a standard production item from the contractors current inventory. The first article should consist of two te
47、sters. First articles should be identified with the manufacturers own part number and the contracting officer should include specific instructions for examinations, tests and approval of the first article. 6.4 Changes firom previous issue. The margins of this specification are marked with an asteris
48、k to indicate where changes (additions, modifications, corrections, deletions) from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these nbtations. Bidders and contractors are cautioned to evaluate the requ
49、irements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Custodian: Air Force - 99 Pr epar ing Act iv it y : Air Force - 82 (Pro j ec t 4 9 20-F3 9 6) 6 U.8. BOVERNMENT PRINTINB OFFICE: 1984 - SOS-gS/20024 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
