1、MIL-T-46744E m 0b 185itb70 b78 m NOT MEASUREMENT SENSITIVE 30 April 1993 SUPERSEDING MIL-T-46744D(AT) 26 February 1986 MILITARY SPECIFICATION TRAILERS, MAINTENANCE: 454 AND 910 KILOGRAM (1000 and 2000 POUND) PAYLOAD, TWO WHEEL, MODIFIED COMMERCIAL This specification is approved for use by the US Arm
2、y Tank- Automotive Command, Department of the Army, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers four types of modified commercial, two wheel, maintenance trailers. Vehicles procured under this specification are
3、commercial items which are required to be warranted by the manufacturer as specified in acquisition documents. 1.2 Classification. The trailer shall be one of the types listed in table I, as specified (see 6.2). Beneficial comments (recommendations, additions, deletions) and any pertinent data which
4、 may be of use in improving this document should be addressed to: US Army Tank-Automotive Command ATTN: AMSTA-UED, Warren, MI 48397-5000, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A DISTRIBUTION
5、 STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-46744E = 9999906 1854673 504 Type MIL-T-46744E(AT) TABLE I. Classification. Payload Body type Kilograms (kg) Pounds I II III I
6、V Cable splicer 454 (1000) Telephone utility 454 (1000) General purpose 454 (1000) Telephone utility 9 10 (2000) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a part of this specification
7、to the extent specified herein. 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). SPECIFICATIONS FEDERAL * W-B-131 STANDARDS
8、FEDERAL FED-STD-297 - Battery Storage: Vehicular, Ignition, Lighting and Starting. - Rustproofing of Commercial (Nontactical) Vehicles. MIL I TARY MIL-STD-1223 - Nontactical Wheeled Vehicles Treatment, Painting, Identification Marking and Data Plate Standards. Aerospace Fusion Welders. * MIL-STD-159
9、5 - Qualification of Aircraft, Missile and MS 51336 - Lunette-Coupler, Drawbar, Ring. MS 51339 - Coupler, Drawbar, Ring - Offset. * (Unless otherwise indicated, copies of federal and military specifications, standards, and handbooks are available from the Naval Publications and Forms Center, Militar
10、y Specifications and Standards, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-4b744E = 0b L854b72 440 W * 2.1.2 Other Government documents. drawinas. and miblications. The * 2, fol
11、lowing other Government documents, drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified, a the issues are those cited in the solicitation. * DEPARTMENT OF DEFENSE Department of Defense Index of Specifications and Standards (DODISS). (Copi
12、es of the DODISS are available on a yearly subscription basis either from the Government Printing Office for hard copy, or microfiche copies are available from the Director, Navy Publication and Printing Service Office, 700 Robbins Avenue, Philadelphia, PA 19111-5093.) DEPARTMENT OF TRANSPORTATION (
13、DOT) Federal Motor Carrier Safety Regulations (FMCSR). Federal Motor Vehicle Safety Standards (FMVSS). * (Application for copies of DOT publications should reference the Code of Federal Regulations, 49 CFR, and the Federal Register, and should be addressed to the Superintendent of Documents, U.S. Go
14、vernment Printing Office, Washington, D.C. 20402.) * OCCUPATIONAL SAFETY AND HEALTH ADMINISTRATION (OSHA) Code of Federal Regulations, 29 CFR. (Application for copies of OSHA publications should reference the Code of Federal Regulations, 29 CFR, and the Federal Register and should be addressed to th
15、e Superintendent of Documents, U.S. Government Printing Office, a Washington, D.C. 20402.) 2.2 Non-Government publications. 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 shall be thos
16、e listed in the issue of the DODISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN NATIONAL STANDARDS INSTITUTE, INC. (ANSI) ANSI STANDARDS ANSI A14.1 - Safety C
17、ode for Portable Wood Ladders. (Application for copies of ANSI publications should be addressed to the American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018. ) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-4b744E m
18、0b L854b73 387 m * AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) ASME Boiler and Pressure Vessel Code (BPVC) Section IX - Qualification Standard for Welding and Brazing Procedures, Welders, Brazers, and Welding and Brazing Operators. (Application for copies of ASME publications should be addressed
19、 to the American Society of Mechanical Engineers, United Engineering Center, 345 East 47th Street, New York, NY 10017.) * AMERICAN WELDING SOCIETY (AWS) AWS 82.1 - Standard for Welding Procedure and AWS D1.l - Structural WeldFng Code-Steel. Performance Qualifications. (Application for copies of AWS
20、publications should be addressed to the American Welding Society, 2501 NW 7th Street, Miami, FL 31025.) * THE EUROPEAN TYRE AND RIM TECHNICAL ORGANISATION (ETRTO) Standards Manual. (Application or copies of ETRTO publications should be addressed to the European Tyre and Rim Technical Organisation, 3
21、2, Avenue Brugmann, 1060 Brussels, Belgium. SOCIETY OF AUTOMOTIVE ENGINEERS, INC. (SAE) SAE Standards and Recommended Practices 5551 - Performance Levels and Methods of Measurement of Electromagnetic Radiation from Vehicles and Devices (30 - 1,000 MHz). 5560 - Seven-Conductor Electrical Connector fo
22、r Truck-Trailer Jumper Cable. 51067 - Seven-Conductor Jacketed Cable for Truck-Trailer Connections. J1292 - Automobile, Truck, Truck-Tractor, Trailer and Motor Coach Wiring. (Application for copies of SAE publications should be addressed to SAE, Inc., 400 Commonwealth Drive, Warrendale, PA 15096.) T
23、HE TIRE AND RIM ASSOCIATION, INC. Year Book. * (Application for copies of Tire and Rim Association Publications should be addressed to The Tire and Rim Association, Inc., 175 Montrose West Ave., Copley, OH 44321.) 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license
24、 from IHS-,-,-. 999990b 1854b74 213 * (Non-Government standards and other publications are normally available from the organizations that prepare or distribute the documents. These documents also may be available in or through libraries or other informational services). * 2.3 Order of precedence. In
25、 the event of a conflict between the text of this document and the references cited 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 Standard vehicle
26、and accessories. Except as specified in 3.1.1 through 3.1.1.7, the vehicle, components, assemblies, and accessories to be delivered under the contract shall be standard or optional items which meet or exceed the requirements of this specification. All items shall be as represented in the trailer man
27、ufacturers technical data book. Special or mounted equipment shall be as represented in the equipment manufacturers technical data. Technical data shall be limited to specifications and technical material identical to that furnished to the authorized company representatives for selection of vehicle
28、models and components, and shall be available to the engineering offices of the procuring activity, prior to delivery of the items. The vehicle shall be a standard commercial trailer, of a model sold to a significant number of buyers other than the Government, in the course of normal business operat
29、ions. The model furnished shall be not older than the manufacturers current model on the date of invitation for bids. 3.1.1 Special requirements. In addition to the standard vehicle and components specified in 3.1, the vehicle shall be furnished with special equipment as specified herein. * 3.1.1.1
30、Treatment and painting. The vehicle shall be treated and painted in accordance with MIL-STD-1223. As specified by the procuring activity for the appropriate military service (see 6.2), the exterior color shall be in accordance with MIL-STD-1223. * 3.1.1.2 Marking and data plates. As specified by the
31、 procuring activity for the appropriate military service (see 6.2), identification markings and data plates shall be in accordance with MIL-STD-1223. * 3.1.1.3 Rustproofing. The vehicle shall be rustproofed in accordance with FED-STD-297. * 3.1.1.4 Brake lights. At least one pair of brake lights sha
32、ll override the four-way emergency flasher or the two systems shall be independent of each other. Modifications to the manufacturers standard product to accommodate this requirement shall not compromise conformance to any Federal 5 Provided by IHSNot for ResaleNo reproduction or networking permitted
33、 without license from IHS-,-,-MIL-T-4b744E m Ob L854b75 L5T m Motor Carrier Safety Regulation referenced herein or to any Federal Motor Vehicle Safety Standard. If additional lights are added to the vehicle, the lights shall be selected from the trailer manufacturers standard matching hardware. * 3.
34、1.1.5 Welders and welding. In addition to the requirements of 3.21.4, all welders employed in the fabrication of the trailer shall be certified, before any welding is accomplished, in accordance with MIL-STD-1595; the welding qualifications of the ASME BPVC, Section IX; or AWS B2.1 or D1.1. The cert
35、ification that the welders have passed the qualification test shall be on file at the contractors facility and shall be available for review by the Government. * 3.1.1.6 Lubrication chart. An illustrated or schematic diagram type lubrication chart shall be provided on the trailer. The chart shall di
36、rect attention to all lubrication fittings and specify the range and grade of lubricants required for critical temperatures. The chart shall be permanently attached to the trailer in a readily visible location. The chart shall be inscribed on a plate conforming to composition A (class 1 or 2) or com
37、position C of MIL-P-514. * 3.1.1.7 Lunette. The coupling device specified in 3.11 shall be a lunette conforming to MS 51336. The coupling device also shall be of the offset type conforming to MS 51339 or shall provide equivalent vertical adjustment of not less than 100 mm (4-inches). * 3.2 General d
38、esign. * 3.2.1 Federal Motor Vehicle Safety Standards. The vehicle shall comply with all Federal Motor Vehicle Safety Standards applicable to the type of trailer furnished and in effect on the date of manufacture. * 3.2.2 OSHA and FMCSR regulations. The vehicle, with only furnished attachments, acce
39、ssories and equipment, shall enable compliance by any user with all OSHA and FMCSR user regulations that are vehicle or vehicle equipment dependent. Regulations shall be those that are applicable to a commercial user of such a similar type, class and size of trailer for the same general use. See 6.1
40、. 3.2.3 Ratings. Vehicle ratings shall be the manufacturers published ratings. Component and vehicular ratings shall not be raised to meet the requirements of this specification. When published ratings are not available, verification of ratings shall be available to the appropriate engineering offic
41、e of the procuring activity. * 3.2.4 Dissimilar metals. All dissimilar metals used throughout vehicle shall be insulated from one another to prevent galvanic or electrolytic action. the 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-T-4b744E 9
42、999906 l1854676 O96 * 3.2.5 Prohibited materials. Asbestos materials shall not be used in any form in any part of the vehicle. No item, part or assembly shall contain e radioactive materials in which the specific activity is greater than 0.002 microcurie per gram or activity per item equals or excee
43、ds 0.01 microcuries. * 3.2.6 Accessibility. The design of the vehicle and optional equipment shall permit access for routine servicing and shall permit access for replacement and adjustment of component parts and accessories with minimal disturbance of other components and systems. * 3.2.7 Lubricati
44、on. All moving parts of the trailer normally requiring lubrication shall be provided with means or such lubrication. The lubrication fittings shall be standard commercial type with a surface-check ball. * 3.2.8 Safety. All equipment or exposed portions of the equipment which are subject to extreme t
45、emperatures and inclement weather and all rotating or reciprocating parts which are of such a nature or so located as to become a hazard to operating personnel shall be insulated, fully enclosed, or properly guarded. 3.2.9 Radio interference suppression. The vehicle shall be suppressed to limit elec
46、tromagnetic radiation in accordance with SAE 5551. * 3.3 Performance. The trailer shall evidence no part failure, deformation, permanent set or interference between parts when towed, both empty and when loaded as specified in 3.4: e (a) At speeds as great as 32 kilometers per hour (km/h) (20 miles p
47、er hour (mph) over unimproved roads and reasonably hard uneven terrain; (b) At speeds as great as 97 km/h (60 mph) over improved roads; and (c) At speeds as great as 16 km/h (10 mph) on 10 percent side slopes on unimproved roads and reasonably hard uneven terrain. * 3.3.1 Tracking ability. The trail
48、er, coupled to a towing vehicle, shall follow the towing vehicle under the conditions specified in 3.3 without exceeding the tracking deviation specified in Federal Motor Carrier Safety Regulation 393.70(a). * 3.3.2 Turning ability. When coupled to a towing vehicle operating in its minimum turning c
49、ircle, the trailer shall follow without cramping or side slipping. The trailer shall be capable of moving through an angle of not less than 60 degrees in relation to a 2590 millimeters (mm) (102-inch) wide towing vehicle without interference between the two vehicles. The angle shall be measured between the longitudinal axis of the trailer and the longitudinal axis of the towing vehicle at the lunette. The ability of the trailer to
