1、c e a MIL-T-46768D W 9999906 1489102 157 W NOT MEASUREMENT SENSITIVE MIL-T-46768D(AT) 5 November 1992 SUPERSEDING MIL-T-46768C(AT) 5 May 1986 MILITARY SPECIFICATION TRAILERS, LIVING QUARTERS: SELF-CONTAINED, MODIFIED COMMERCIAL This specification is approved for use by the US Army Tank-Automotive Co
2、mmand, 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 five sizes of self-contained, all metal aircraft type construction, travel trailers for use as living quarters. Trailers procured unde
3、r this specification are commercial items which are required to be warranted by the manufacturer as specified in acquisition documents. Beneficial comments (recommendations, additions, deletions) and any I pertinent data which may be of use in improving this document should be addressed to: US Army
4、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 I this document or by letter. AMSC N/A 1 FSC-2330 I DISTRIBUTION STATEMENT A. Approved for public release; distribution is
5、 unlimited. Licensed by Information Handling ServicesNIL-T-4b7bD m 99999Ob L489L03 093 Overall length (minimum) Size millimeters (mm) (feet) 21 6400 (21) 25 7600 (25) 29 8840 (29) 32 9750 (32) 34 10 360 (34) 1.2 Sizes. Size of vehicle shall be determined by the minimum overall length and minimum gro
6、ss weight rating, as specified in table I (see 6.2). Gross weight rating (minimum) i kilograms (kg) (pounds) 2500 (5,500) 3090 (6,800) 3090 (6,800) 3770 (8,300) 4041 (8,900) * TABLE I. Sizes. 2. APPLICABLE DOCUMENTS * 2.1 Government documents. * 2.1.1 Specifications, standards, and handbooks. The fo
7、llowing specifications, standards, and handbooks form a part of this document 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, ci
8、ted in the solicitation (see 6.2). SPECIFICATIONS FEDERAL * A-A-39 3 W-B-131 STANDARDS FEDERAL FED-STD-297 MIL I TARY MIL-STD-810 MIL-STD-1223 MS 51336 MS 51339 MS 75020 MS 75021 - Extinguishers, Fire, Dry-Chemical, - Battery, Storage: Vehicular, Ignition, (Hand-Portable). Lighting and Starting. - R
9、ustproofing of Commercial (Nontactical) Vehicles. - Environmental Test Methods. - Nontactical Wheeled Vehicles Treatment, Painting, Identification Marking, and Data Plate Standards. - Lunette-Coupler, Drawbar, Ring. - Coupler, Drawbar, Ring-Offset (Taper Shank). - Connector Plug, Electrical - 12 Con
10、tact, Intervehicular, 28 Volt, Waterproof. - Connector, Receptacle, Electrical, 12- Contact, Intervehicular, 28 Volt, Waterproof. 2 Licensed by Information Handling ServicesMIL-T-46768D W 9999906 1489104 T2T MIL-T-46 68D(AT) * (Unless otherwise indicated, copies of federal and military specification
11、s, standards, and handbooks are available from the Naval Publications and Forms Center, Military Specifications and Standards, Bldg. 4D, 700 Robbins Avenue, Philadelphia, PA 19111-5094.) * 2.1.2 Other Government documents, drawings, and publications. The following other Government documents, drawing
12、s, and publications form a part of this document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. * DEPARTMENT OF DEFENSE Department of Defense Index of Specifications and Standards (DODISS). (Copies of the DODISS are available on a yearly s
13、ubscription 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 (DOT) Federal Motor Carrier Safety Regulation
14、s. Federal Motor Vehicle Safety Standards. * Federal Regulations, 49 CFR, and the Federal Register, and should be addressed to the Superintendent of Documents, U.S. Government Printing Office, Washington, D.C. 20402.) (Application for copies of DOT publications should reference the Code of * 2.2 Non
15、-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 are those listed in the issue of the DODISS cited in the solicitation. Unless otherwise specified, the issues o
16、f documents not listed in the DODISS are the issues of the documents cited in the solicitation (see 6.2). * THE EUROPEAN TYRE AND RIM TECHNICAL ORGANISATION (ETRTO) Standards Manual (Application for copies of ETRTO publications should be addressed to the European Tyre and Rim Technical Organisation,
17、 32, Avenue Brugmann, 1060 Brussels, Belgium.) NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA) National Electric Code (Application or copies of NEMA publications should be addressed to the National Electrical Manufacturers Association, 2101 “L” Street, N.W., Washington D.C. 20037.) 3 Licensed b
18、y Information Handling ServicesMIL-T-467bBD 999990b L489105 966 M NATIONAL FIRE PROTECTION ASSOCIATION (NFPA) NFPA NO. 501 - Standard for Recreational Vehicles. (Application for copies of NFPA publications should be addressed to National Fire Protection Association, Batterymarch Park, Quincy, MA 022
19、69.) SAE, INC. 5350 CAE Standards 5551 5560 5588 5684 51067 51292 and Recommended Practices. - Spark Arrester Test Procedure for Medium - Performance Levels and Methods of Size Engines (DoD adopted). Measurement of Electromagnetic Radiation from Vehicles and Devices (30-1000 MHz). - Seven-Conductor
20、Electrical Connector for Truck-Trailer Jumper Cable. - Turn Signal Lamps. - Trailer Couplings, Hitches and Safety - Seven-Conductor Jacketed Cable for - Automobile, Truck, Truck-Tractor, Trailer, Chains. Truck-Trailer Connections. and Motor Coach Wiring. (Application for copies of SAE publications s
21、hould be addressed to CAE, Inc., 400 Commonwealth Drive, Warrendale, PA 15096.) THE 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.) * (No
22、n-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 the event of a conflict between the text
23、 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 and accessories. Except as specified in 3.1
24、.1 through 3.1.1.6, the trailer shall be the manufacturers current standard commercial model of all metal aircraft type construction, with standard or 4 Licensed by Information Handling ServicesMIL-T-46768D optional items which meet or exceed the requirements of this specification. The trailer shall
25、 be travel type, intended for living quarters, and shall be completely self-contained. All items shall be as represented and rated in the manufacturers sales information, including special or mounted equipment. The model furnished shall be not older than the manufacturers current model on the date o
26、f 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 Treatment and painting. The vehicle shall be treated and painted in accordance with MIL-STD-122
27、3. As specified by the procuring activity for the appropriate service (see 6.2), the exterior color shall be in accordance with MIL-STD-1223. * 3.1.1.2 Markings and data plates. As specified by the procuring activity for the appropriate military service (see 6.2), identification marking and data pla
28、tes shall be in accordance with MIL-STD-1223. When specified (see 6.2), concealed markings shall be furnished. * 3.1.1.3 Rustproofing. When specified (see 6.2), the vehicle shall be rustproofed in accordance with FED-STD-297. 3.1.1.4 Coupling device. When specified (see 6.2), the trailer shall be eq
29、uipped with a lunette coupler ring conforming to MS 51336 and MS 51339. The lunette installation shall provide for a 100 mm (4-inch) vertical range of adjustment. * 3.1.1.5 Blackcut provisions. When specified (see 6.2), in addition to the manufacturers standard drapes (see 3.5.11(f), all windows and
30、 doors shall have blackout curtains, shades, or other means of preventing the interior light from being visible outside of the vehicle. * 3.1.1.6 3rake lights. At least one pair of brake lights shall override the four-way emergency flasher or the two systems shall be independent of each other. Modif
31、ications to the manufacturers standard product to accommodate this requirement shall not compromise conformance to any Federal Motor Carrier Safety Regulation referenced herein or to any Federal Motor Vehicle Safety standard. 3.2 General design. 3.2.1 Safety standards. The plumbing, heating and elec
32、trical systems shall conform to National Fire Protection Association (NFPA) Standard No. 501. The vehicle and all furnished accessories shall comply with all Federal Motor Vehicle Safety Standards in effect on the date of manufacture. 5 Licensed by Information Handling ServicesMIL-T-Yb768D 0b Lq8910
33、7 739 = * 3.2.2 Dissimilar metals. All dissimilar metals used throughout the vehicle shall be insulated from one another to prevent galvanic or electrolytic action. * 3.2.3 Prohibited materials. Asbestos materials shall not be used in any form in any part of the vehicle. No item, part or assembly sh
34、all contain radioactive materials in which the specific activity is greater than 0.002 microcurie per gram or activity per item equals or exceeds 0.01 microcuries. * 3.2.4 OSHA and FMCSR regulations. The vehicle, with all furnished attachments, accessories and equipment, shall enable compliance by a
35、ny 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 semitrailer for the same general use. See 6.1. * 3.2.5 Accessibility. The design of the vehi
36、cle 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. 3.2.6 Ratings. Vehicle ratings shall be the manufacturers published ratings. Compon
37、ent 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 office of the procuring activity. Minimum payload shall conform to 1.2 for the specified s
38、ize of the vehicle. 3.2.7 Gross weight. Gross weight shall consist of curb weight, personal cargo, and full complement of fuel and water. Minimum gross weight rating shall conform to table I. * 3.2.8 Weight distribution. The distribution of gross weight for the purpose of establishing suspension, ax
39、le, and tire capacities shall be determined with the payload distributed so that the load imposed on the hitch is between 10 and 15 percent of the specified gross weight rating. 3.2.9 Curb weight. The curb weight of the fully equipped trailer shall include the chassis weight and the weight of all at
40、tachments, accessories, and equipment and shall be the minimum practicable for the service intended. 3.3 Performance. Vehicle performance, as specified in 3.3.1 through 3.3.3, shall be met by the trailer when fully equipped with all attachments and accessories, completely serviced, and towed by a to
41、wing vehicle over improved and unimproved, hard, uneven terrain. The vehicle shall show no evidence of failure or malfunction of trailer, trailer components, attachments and accessories. 6 Licensed by Information Handling Servicesa a 0 MIL-T-4b7bD m 9999906 1489108 675 m * 3.3.1 Towing speed and tra
42、iling ability. While being towed over dry, level, smooth, improved and prepared hard-surfaced roads at sustaine speeds up to 97 kilometers per hour (km/h) (60 miles per hour (mph), and over dry, unimproved and gravel roads at speeds to 41 km/h (25 mph), the trailer shall follow the towing vehicle wi
43、thout exceeding the tracking deviations 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 circle, the trailer shall follow without cramping, and shall trail without interference with the towing veh
44、icle. The trailer shall be capable of moving through an angle of not less than 60 degrees in relation to a 2440 nun (96-inch) wide towing vehicle without interference between vehiclss. The angle shall be measured between the longitudinal axis of the trailer and the longitudinal axis of the towing ve
45、hicle at the lunette or ball nitch. 3.3.3 Service brakes. The service brakes shall comply with the performance requirements in Federal Motor Carrier Safety Regulation 393.52. The trailer brake system shall include an automatic breakaway feature conforming to Federal Motor Carrier Safety Regulation 3
46、93.43(d). * 33.3.1 Automatic actuation. The trailer shall be equipped with an automatically actuated device to apply the vehicle brakes upon breakaway from the towing vehicle. The breakaway system shall conform to Federal Motor Carrier Safety Regulation 393.43. * 3.3.4 Suspension system. The axle, s
47、prings, accessories and components of the suspension system shall withstand the imposed loads without evidence of permanent set, part failure or malfunctioning under the operating conditions specified. 3.4 Trailer components. 3.4.1 Frame. The frame shall be all steel construction and shall be design
48、ed to transport the weight of the trailer body with all equipment. The frame shall support the body full width. * 3.4.2 Hitch assembly. Unless otherwise specified (see 3.1.1.4), the trailer shall be equipped with a standard ball hitch assembly, conforming to SAE 5684, complete with mating ball for i
49、nstallation on the towing vehicle. Anti-sway bar(s) shall be provided. When specified, the trailer shall be equipped with a lunette coupler ring in accordance with 3.1.1.4. 3.4.3 Suspension. The suspension system and running gear shall have a rated capacity at least equal to the load imposed on each member, measured at the ground, with the trailer loaded as specified in 3.2.6. 7 Licensed by Information Handling ServicesMIL-T-467bD 9Ob L48l109 501 * 3.4.4 Axles. Size 21 through 32 trailers shall be of the four-wheel, tandem-axle type. Size 34 shall be of the six-wheel
