AIR FORCE MIL-M-7405 D-1986 MAINTENANCE PLATFORM AIRCRAFT TYPE B-5A《B-5A型航空器维修平台》.pdf

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1、MIL-M-7LI05D 37 777770b 0385738 - e- Aliphatic. Tags, Shipping and Stock. Boxes, Wood, Cleated-Plywood. Box, Shipping, Fiberboard. MILITARY MIL-P- 116 Preservation, Methods of. MIL-E -5 2 7 2 Environmental Testing, Aeronautical and Associated Equipment, General Specification for. msc NIA FSC 1730 DI

2、STRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. /- THIS DOCUMENT CONTAINS -9 PAGES. ,- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-M-?405D (USAFI MIL-C-5501 MIL-H-56 06 MIL-H-6083 STANDARDS MILITARY I Cap, Prot

3、ective, Dust and Moisture Sea1 for Resisto- flex Dynatube Fittings. Hydraulic Fluld, Petroleum Base; Aircraft; Missile, and Ordnance. Hydraulic Fluid, Petroleum Base, for Ereservation and Testing. MIL-STD- 12 9 Marking for Shipment and Storage. MIL-STD-130 MIL- STD- 1 62 Materials Handling Equipment

4、, Preparation for Identification Marking of US Military Property. Shipment, Storage, Cyclic Maintenance, Routine Testing and Processing. MIL-STD-1186 Cushioning, Anchoring, Bracing, Blocking, and Waterproofing, with Appropriate Test Methods. +: (Copies of speciications and standards required by manu

5、facturers in connec- tion with specific acquisition functions should be obtained from the contract- ing activity or as directed by the contracting officer.) * 2.1.2 Other Government documents , drawings, and publications, The follow- ing other Government documents, drawings, and publications form a

6、part of this cpecif ication to the extent specified herein. DRAWING AIR FORCE I 54 56279 Maintenance Platform Assembly, Aircraft Type B-SA Assembly of, * (Copies of speckfications, standards , drawings, and publications required by manufacturers in connection with specific acquisition functions shou

7、ld be obtained from the contracting activity or as directed by the contracting officer.) 2.1.3 Order o precedence. In the event of a conflict between the text of this specification and the references cited herein, the text of this specifi- cation shall take precedence. 2.2 Other publications. The fo

8、llowing document(s) form a part of this specification to the extent specified herein. The issues of the documents which are indicated as DoD adcpted shall be the issue listed in the current DoDISS and the supplement thereto, if applicable. 2 Provided by IHSNot for ResaleNo reproduction or networking

9、 permitted without license from IHS-,-,-MIL-M-7VOSD 17 7777706 0185720 b M a AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) D 3951 Standard Practice for Comercial Packaging. (Application for copies should be addressed to the American Society for Testing and Materials, 1916 Race Street, Philadelph

10、ia, PA 19103,) (Nongovernmental standards and other publications are normally available from the organizations which prepare or which distribute the documents. These documents also may be available in or through libraries or other informational services. 1 3. REQUIRENENTS * 3.1 First article. This s

11、pecification makes provisions for first article testing. Testing shall be performed at the contractors plant. First article testing shall be in accordance with paragraph 4.4. 3.2 General requirements. The requirements of drawing 5456279 apply as requirements of this specification with the exceptions

12、 and additions specified herein. When the drawing and this specification conflict, this specification shall govern. 3.3 Commercial parts. Commercial parts having suitable properties may be used where, on the date of invitation for bids, there are no suitable standard parts. In any case, commercial u

13、tility parts such as screws, bolts, nuts, and cotterpins, having suitable properties may be used provided: a. They can be replaced by the standard parts CMS or AN) without alteration. . . b. The corresponding standard parts are referenced in the parts list and, if practical, on the contractors drawi

14、ngs. I 3.4 Performance. Unless otherwise specified, the maintenance platform shall be capable of operating satisfactogily immediately following subjection to temperature ranging from -65 to +160 Fahrenheit. 3.4.1 Mobility. The maintenance platform shall be capable of being towed over equal distance

15、of sod, brick pavement, rough concrete, and rough macadam for a distance of 50 miles at an average speed of 15 miles per hour. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-il-7405D 17 m 377770b 0185721 3.5 Wheel locks. With all wheel locks

16、fully engaged, no damage to the locks or slipping of wheels shall result when the maintenance platform is moved a distance of 5 feet on smooth, dry concrete. 3.6 Hydraulic system. The hydraulic system shall be equipped with a reservoir and filler opening located on the top. A drain plug shall be pro

17、- vided. An air vent shall be incarporated in the filler cap. Means shall be provided in the reservoir tank to prevent oil from splashing out when the maintenance platform is moved. An oil strainer shall be installed in the filler opening. conforming to MIL-H-6083 for shipment and storage. The hydra

18、ulic system and reservoir shall be filled with oil 3.6.1 Actuating pump. The actuating pump used in height adjustment of the. maintenance platform shall be designed for ease of maintenance, operation, and for resistance to the temperatures specified herein. the end of the handle of the pump to raise

19、 the platform from the low level shall not exceed 15 pounds with 150 pounds on the platform. hundred strokes shall be required to accomplish the first 4 feet of adjustment. The force required at A maximum of one 3.6.2 Hydraulic cylinder. Whenever practical, the hydraulic components shall conform to

20、AN standards. A seal shall be installed to prevent the entrance of moisture into the cylinder. (rubber and metali shall be suitable for operation in temperatures ranging from -65O to +160 F. The plunger or piston shall be chromium plated. All hydraulic fittings and lines Low-temperature, synthetic r

21、ubber-packing shall be used. 3.7 Bolts, nuts and pins. All bolts, nuts and pins used in the construc- tion of the maintenance platform shall be cadmium or zinc plated. otherwise specified, self-locking nuts shall be used in the construction of the maintenance platform. Unless 3.8 Identification of p

22、roduct. Equipment, assemblies and parts shall be marked for identification- in accordance with MIL-STD-130. 3.9 Workmanship. 3.9.1 General. The maintenance platform, including all parts and acces- sories, shall be constructed and finished in a thoroughly workmanlike manner. Particular attention shal

23、l be given to neatness and thoroughness of welding and brazing, painting, riveting, and freedom of parts from burrs and sharp edges. 3.9.2 Riveting, Riveting operations shall be carefully performed to insure that the rivets are tight and satisfactorily headed. 4 Provided by IHSNot for ResaleNo repro

24、duction or networking permitted without license from IHS-,-,-I MIL-M-7405D 37 7777706 0385722 T MIL-M-7405D (USAF ) 3.9.3 Welding. All welded joints shall be inspected to insure freedom from cracks, oxide inclusions, or injurious porosity. 3.9.4 Cleaning. The maintenance platform shall be thoroughly

25、 cleaned of loose, spattered, or excess weld, metal chips, and other foreign material during and after final assembly. Burrs and sharp edges, as well as resin flash that may crumble, shall be removed. 4. QUALITY ASSURANCE PROVISIONS * 4.1 Responsibility for inspection. Unless otherwise specified in

26、the con- tract or purchase order, the contractor is responsible for the performance of all inspection requirements as specified herein. Except as otherwise speci- fied in the contract or order, the contractor may use his own or any other facilities suitable for the performance of the inspection requ

27、irements speci- fied herein, unless disapproved by the Government. 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. The Government reserves the -k 4.2 Classification

28、of tests. The inspection and testing of the maintenance platform shall be classified as follows: a. First article (see 4.4). b. Acceptance tests (see 4.5). 4.3 Test conditins. The test conditions are described under the tests to which they apply. 4.4 First article testing. 4.4.1 Test sample. The fir

29、st article test sample shall consist of one It shall be tested at a model representative of the production equipment. laboratory designated by the procuring activity or, when so stated in the con- tract, at the contractors plant under the supervision of the procuring act iv it y. 4.4.2 First article

30、 tests, The first article tests shall consist of all the tests described under 4.6. 4.5 Acceptance tests. Acceptance test shall consist of: a. Individual tests. b. Sampling tests. 4.5.1 Individual tests. Each maintenance platform shall be subjected to the following test as specified under 4.6: Exami

31、nation of product (see 4.6.1). 4.5.2 Sampling plan and bests. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.5.2.1 Sampling plan. One maintenance platform shall be selected at ran- dom from every fifty or fraction thereof produced and subjected

32、to the follow- ing tests as specified under 4.6: a. Static load (see 4.6.2). b. Ten percent of the endurance test. filled with hydraulic fluid conforming to MIL-H-5606 for this test (see 4.6.3). The hydraulic system shall be c. Setting (see k.6-4). 4.5.2.1.1 Rejection and retest. When one or more ma

33、intenance platforms selected from a production run fail to meet the specification, maintenance platforms still on hand or later produced shall not be accepted until the extent and cause of failure are determined. , For operational reasons, indi- vidual tests may be continued pending the investigatio

34、n of a sampling test failure. shall not be made until it is determined that the lot meets all the require- ments of the specification. Final acceptance of maintenance platforms on hand or produced later 4.5.2.1.3 Defects in maintenance platforms already accepted. The investi- gation of a test failur

35、e could indicate that defects may exist in maintenance platforms already accepted. curing activity of all defects likely to be found and methods of correcting them. If so, the contractor shall fully advise the pro- 4.6 Test methods. 4.6.1 Examination of product. The maintenance platform shall be ins

36、pected to determine compliance with the requirements specified herein with respect to material, workmanship, dimensions, marking and finish. Static load. 4.6.2 throughout its range in increments not to exceed 12 inches. increments, a uniformly distributed load of 1,000 pounds shall be placed on the

37、maintenance platform. depressed or deflected more than 1 112 inches under this load nor shall any permanent deformation or deflection of any member of the maintenance platform be evident after completion of these tests. for this test. The maintenance platform shall be tested at all heights At each o

38、f these No member of the maintenance platform shall be Safety pins shall not be installed 4.6.2.1 No point un the expanded metal deck shall be depressed or deflected more than 114 inch when subjected to a concentrated vertical load of 300 pounds distributed over an area of 25 square inches. 4.6.2.2

39、Steps or rungs shall be individually tested by applying a load of 400 pounds at or near the center of the step. permanent deformation of the steps shall be apparent at the conclusion of these tests. No evidence of damage or Provided by IHSNot for ResaleNo reproduction or networking permitted without

40、 license from IHS-,-,-I I c MIL-M-740 5D (U SAF ) 4.6.2.3 Upon completion of the tests specified in 4.6.2, 4.6.2.1. and 4.6.2.2, the maintenance platform shall be visually inspected. There shall be no leakage of hydraulic fluid, elongation of boltholes, or failure of welding, materials, or workmansh

41、ip. 4.6.3 Endurance. The maintenance platform shall operate satisfactorily after it has been subjected to a hundred cycles of raising a 500-pound load to maximum height and lowering the load to minimum height. - 4.6.4 Settling. With the platform raised 20. percent above the minimum height and with a

42、 platform load of 1,000 pounds, the rate of. settling of the hydraulic ram shall not exceed 0.020 inch per hour. installed for this test. Safety pins shall not be 4.6.5 Temperature tests. The maintenance platform shall be subjected to the following tests conducted in accordance with the specified pr

43、ocedures of MIL-E-5272. shall be subjected to 10 cycles of operation with a 500-pound load on the platf om. . Upon cornpletion of each exposure period, the maintenance platform 4.6.5.1 Low temperature. The low temperature test shall be in accordance with procedure I. mixture by volume of 60 percent

44、hydraulic fluid conforming to MIL-H-5606 and 40 percent fuel conforming to TT-N-95. For this test, hydraulic systems shall be filled with a 4.6.5.2 High temperature. The high temperature test shall be in accord- ance with procedure I, except that the temperature shall be reduced to 49O Centigrade fo

45、r 12 hours prior to operation and test. 4.6.6 Tow test. -The maintenance platform shall be towed for a distance of 50 miles at an average speed of 15 mph. as nearly as available conditions will permit, over equal distances of sod, brick pavement, rough concrete, and rough macadam. of casters shall o

46、ccur during these conditions. wear shall occur to the casters, platforms, or any components thereof as a result of this test, All components of platforms and casters, including immobilizing features, shall function properly after the tow test and shall show no evidence of failure. The tow tests shal

47、l be conducted, No appreciable shimmying No damage or appreciable 4.6.6.1 The maintenance platform shall be inspected for misalignment, dis- tortions, or other defects that may have developed or have been aggravated during this test. Following the tow test and without intervening recondi- tioning, t

48、he maintenance platform shall be subjected to the test specified in 4.6.2. 4.6.7 Wheel locks. With all wheel locks fully engaged, the maintenance platform shall be subjected to a drawbar pull sufficient to move the unloaded maintenance platform a distance of 5 feet on smooth, dry concrete. shall be

49、no indication of retraction, deformation, or damage to the locks or slipping of the wheels. There 4.7 Inspection of the preservation, packaging and marking for shipment and storage. Sample items or packs and the inspection of the preservation, packaging, packing and marking for shipment and storage shall be in accordance with the requirements of section 5, or the documents specified therein. i Provided by IHSNot for ResaleNo reproduction or networkin