1、MIL-DTL-85405A 9999906 2053016 974 I INCH-POUND I MIL-DTL-85405A(AS) 22 SeDtember 1997 SUPERSEDING 28 July 1980 MIL-T-85405(AS) DETAIL SPECIFICATION TRAILER, MUNITIONS, MHU-l85/M This specification is approved for use by the Naval Air Systems Command, Department of the Navy, and is available for use
2、 by ail Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification establishes the requirements for the procurement of a munitions trailer designated as MHU-l85/M. 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3
3、 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for addtionai information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all
4、specified requirements 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 to the extent specified here
5、in. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). Beneficial comments (recommendations, additions, deletions) and any per
6、tinent data which may be of use in improving this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 414100B120-3, Highway 547, Lakehurst, NJ 08733-5100, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this d
7、ocument or by letter. AMSC N/A FSC 1740 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-85405A 9999906 2053037 800 MIL-DTL-85405A(AS) SPECIFICATIONS DEPARTMENT
8、 OF DEFENSE MIL-PW-2 104 - Lubricating Oil, Internal Combustion Engine, MIL-PRF- 10924 - Grease, Automotive and Artillery MIL-L-3572 - Lubricant, Colloidal Graphite in Oil MIL-W-21157 - Weldment, Steel, Carbon and Low Alloy MIL-W-22248 - Weldments, Aluminum and Aluminum Alloy MIL-V-62038 - Vehicles,
9、 Wheeled; Preparation for Shipment and Storage Of CombaTactical Service STANDARDS DEPARTMENT OF DEFENSE MIL-STD-129 - Marking for Shipment and Storage MIL-STD-41 O - Non-Destructive Testing Personnel Qualification and Certification (Eddy Current, Liquid Penetrant, Magnetic Particle, Radiographic, an
10、d Ultrasonic) (Unless othemise indicated, copies of the above specifications and standards are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19 1 1 1-5094.) 2.2.2 Other Government documents, drawings. and Dublications. The following other G
11、overnment documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation PUBLICATIONS NAVAL AIR SYSTEMS COMMAND (NAVAIRSYSCOM) DL1318AS100 - Data List - Trailer, Munitions 2.3 Non-Govemment
12、 Dublications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of documents
13、 not listed in the DoDISS are the issues of the documents cited in the solicitation (see 6.2). 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85405A m 999990b 20530L8 747 m AMERICAN SOCIETY FOR TESTMG AND MATERIALS (ASTM) ASTM-E1417 - Liqu
14、id Penetrant Examination? Standard Practice For (DoD Adopted) ASTM-E 1444 - Particle Examination, Magnetic (DoD Adopted) (Application for copies should be addressed to the American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) AMERICAN WELDING SOCIETY (
15、AWS) AWS-D1.1 - Steel - Structurai Welding Code, Standard For OD Adopted) (Application for copies should be addressed to the American Welding Society, 550 N.W. LeJeune Road, Miami, FL 33126.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cit
16、ed herein, 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 Design and construction 3.1.1 Construction. The trailer shall be constructed in accordance with NAVA
17、IR DLl3 18AS 1 O0 and all documents listed thereon. 3.1.2 Welding. All welding shall be in accordance with AWS-D1.l for structural steel, MIL-W-21157, Class 5, for steel weldments or MIL-W-22248 for aluminum weldments. 3.1.2.1 WeldinP insuection. During fabrication, all welding shall be inspected in
18、 accordance with ASTM-E1417 and ASTM-E1444 by personnel qualified under MIL-STD-410. 3.1.3 Lubrication. The trailer shall be lubricated with grease in accordance with MIL-PRF- 10924; lubricating oil, MIL-PRF-2 104; or graphite? MIL-L-3572, as applicable. 3.2 First article. When specified (see 6.2),
19、a sample shall be subjected to first article inspection in accordance with 4.2. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85405A = 999990b 2053039 683 Y 3.3 Performance reauirements. 3.3.1 Functioning. The trailer shall be examined fo
20、r proper functioning of wheels, brake systems, and electrical systems (see 4.5.2). 3.3.2 Proof load. The trailer, when supported by its running gear, shall withstand a proof load of 8,000 (+loo, -0) pounds when subjected to the overload test specified in 4.5.5.1 3.3.3 Brake system. 3.3.3.1 Parking b
21、rakes. The parking brakes shall hold the trailer, loaded with a 4,000 (+loo, -0) pound test load, on a 15“ grade in either direction, front or rear when subjected to the test specified in 4.5.3.1. 3.3.3.2 Service brakes. The service brakes shall stop the trailer, loaded with a 4,000 (+loo, -0) pound
22、 test load, within 30 feet when traveling at 20 miles per hour, on level, dry concrete when subjected to the test specified in 4.5.3.2. 3.4 Towing force. The towing force required to move the trailer hm rest on a smooth, dry, level, paved surface, such as brushed concrete, shall be not greater than
23、50 pounds per ton of maximum gross weight, measured at the drawbar when subjected to the test specified in 4.5.4. 3.5 Mobilitv. The trailer shall be subjected to and pass the road tests (see 4.5.6.1), the maneuverability test (see 4.5.6.2), and the side slope test (see 4.5.6.3). 3.6 Workmanshit. The
24、 trailer, including all parts and accessories, shall be constructed to ensure that appearance, fit, and adherence to specified tolerances shall be within design limitations. Equipment having missing, inoperative, defective, bent, broken, or otherwise damaged parts, shall not be acceptable. The insta
25、llation of hardware parts, such as catches, pins, handles, nuts, bolts, shall not damage the hardware or the mounting surface. Hardware or mounting sdkes damaged in this way shall be touched up to provide a continuous protective coating. Screws, nuts, and bolts showing cross threading, mutilation, d
26、etrimental or hazardous burrs shall not be acceptable. Insulated wires shall be formed into cables or ducted. Wires, cables, and brake lines shall be routed, positioned, and protected to avoid contact with rough or irregular surfaces and sharp edges. All welds shall be fiee of harmful defects such a
27、s cracks, porosity, undercuts, voids, and gaps. There shall be no evidence of burn through. Fillets shall be uniform and smooth. Angular or thickness misalignment, warpage, or dimensional change due to heat from the welding operation shall be within permitted tolerances. There shall be no damage to
28、adjacent parts resulting fiom welding. 3.7 Marking. Marking for shipment shall be in accordance with MIL-STD-129. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-85405A E 0b 2053020 3T5 4. VERIFICATION 4.1 Classification of inspections. Th
29、e inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Conformance inspection (see 4.3). c. Sampling inspection (see 4.4). 4.2 First article insriection. First article inspection shall be performed on one complete trailer assembly. This inspec
30、tion shall include the tests in table I under First Article and in the sequence shown. 4.3 Conformance instection. Each trailer shall be subjected to the examinations and tests noted in table I under Conformance and in the sequence shown. 4.4 Samtiling inspection. Trailer components shall be inspect
31、ed using sampling plans noted on the components detail drawings or if none are specified, as directed by the procuring activity (see 6.2). 4.4.1 Reiection and retest. When a unit fails the inspections (see 4.2 and 4.3), no item still on hand or later produced shall be accepted until the extent and c
32、ause of failure are determined and resolved. 4.5 Test methods. 4.5.1 Examination of moduct. Each trailer shall be examined visually to determine compliance with the requirements of this specification for which tests are not specified, including materials and workmanship. Particular attention shall b
33、e given to routing protection and functioning of the lighting circuits and brake lines. 4.5.1.1 Conformance to drawings. Each trailer shall be inspected to determine conformance to the engineering drawings. Dimensions and attributes not in compliance with drawing tolerances shall not be acceptable.
34、4.5.2 Functioning;. Each trailer shall be examined to determine that wheels are correctly aligned, that all brake systems function, including back-up, and are correctly adjusted, that the electrical system is in proper working order, that all points requiring lubrication are properly lubricated, and
35、 the wheel bearings are properly adjusted and lubricated. To check alignment, the 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TEST Examination of Product Conformance to Drawings Functioning Towing Force Breakaway Side Slope Service Brake Mobili
36、ty Parking Brake overload TABLE I. First article and conformance inspection. TEST FIRST REQUIREMENT PARAGRAPH ARTICLE CONFORMANCE 3.1.1 4.5.1 X X 3.1.1 4.5.1.1 X X 3.3.1 4.5.2 X X 3.4 4.5.4 X 3.4 4.5.4.1 X 3.5 4.5.6.3 X 3.3.3.2 4.5.3.2 X 3.5 4.5.6 X 3.3.3.1 4.5.3.1 X 3.3.2 4.5.5.1 X X SEQUENCE 1 2 3
37、 4 5 6 7 8 9 10 t trailer shall be on a level surface and with front wheels straight ahead, measure the distance between the front wheels at hub height. Mark point where measurement was made. Roll trailer forward until these marks are on the opposite side of the axle (1 80O). Measure the distance be
38、tween the wheels at hub height at this point. The difference between the two measurements is the actuai toe-iq it should not be over 0.250 inch. If toe-in is not as stated, adjust to O to 0.250 inch. For adjustment, loosen jam nuts on both ends of the tie-rods and rotate tie-rods in or out as requir
39、ed. To adjust wheel bearings, jack or prop trailer to raise wheel off the ground. Spin the wheel and tighten adjusting nut until a heavy drag is felt. Then loosen nut until wheel rotates fkly and bearing end play does not exceed 0.002 to 0.003 inches. Install cotter pin through nut and axle and repl
40、ace grease cap. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-DTL-5405A 999990b 2053022 178 4.5.3 Brake system tests. 4.5.3.1 Parking brake tests. The trailer, loaded with a 4,000 (+loo, -0) pound test load (see 4.5.5.2), shall be placed on
41、a +5, -0 degree inclined ramp, facing uphill, and with parking brakes applied, the trailer shall not roll. The loaded trailer shall then be tested facing downhill. This test should be performed after all mobility testing to ensure that the brakes have been burnished to achieve a successful test. 4.5
42、.3.2 Service brakes. The trailer loaded with 4,000 (+loo, -0) pound test load (see 4.5.5.2), shall be connected to a prime mover and the trailer test brakes shall be tested in the following manner. 4.5.3.2.1 Brake stopping caDabilitv test. Tow the loaded trailer at a speed of 20 mph on level, dry co
43、ncrete. Stop by applying brakes of towing vehicle thus actuating the trailer inertia brake. The trailer shall stop within 30 feet or less from the point where the brakes were first applied. The trailer shall not exhibit any tendency to jackknife. At the end of five test cycles, inspect the service b
44、rakes and actuating mechanism. Failure to operate or evidence of excessive heating or distortion shall be cause for rejection. 4.5.3.2.2 Back-up test. After acceptance under 4.5.3.2.1, the trailer shall be subjected to a back-up force. The service brakes shall hold momentarily but with continued for
45、ce, shall release and allow unrestricted rearward travel. The test shall be performed five times, 4.5.4 Towing force test. A scale shall be placed between the prime mover and the towbar of the trailer, loaded with a 4,000 (+loo, -0) pound test load (see 4.5.5.2). The prime mover shall apply a gradua
46、l towing force through the scale to the loaded trailer, with its brakes released and with the trailer on level, dry concrete. The trailer shall roll before the scale registers 100 pounds. 4.5.4.1 Breakawav test. Manually tow the trailer loaded with a 4,000 (+loo, -0) pound test load. While under tow
47、, exert a pull on the breakaway cable to actuate the brake system. The wheels should lock, bringing the trailer to a halt. This test shall be repeated, but this time, actuating the brake system with the manual device affixed to the surge brake, to bring the trailer to a halt. 4.5.5 Load tests. 4.5.5
48、.1 Overload test. The overload test shall be accomplished by placing an 8,000 (+loo, -0) pound test load evenly distributed over the entire trailer deck for a 10 minute period. At completion of the test, evidence of permanent distortion such as warpage of trailer deck, or damage such as dents or bre
49、akage of component parts, or misalignment of wheels or other defects detrimentai to the intended end use, shall be cause for rejection. 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-85YOSA 9999906 2053023 004 D SURFACE SPEED I 4.5.5.2 4.000 wund test load. The 4,000 (+loo, -0) pound test load shall consist of bulk material, such as steel or concrete evenly distributed
