MIL-T-62255 Truck Tractor, Yard Type, 4 X 2, Xm878This specification covers diesel engine driven, four-wheel, two rear wheel drive truck-tractor, yard type, with a one man half cab, having a minimum gross vehicle weight rating GVWR of 43,500 pounds and a gross combination weight rating GCWR of 100,000 pounds. Vehicles under this specification shall be procured only from a manufacturer who meets the standard commercial and commercially proven component criteria. Vehicles shall be warranted by the manufacturer as specified in the procurement documents.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23 - 24 - 25 - 26 - 27 - 28 - 29 - 30 - 31 - 32 - 33 - 34 - 35 - 36 - 37 - 38 - 39 - 40 - 41 - 42 - 43

MIL-T-62255C(AT)

3.2.10 Materials. Material shall be as specified herein. All material shall be new and unused. Materials not specified shall be selected by the supplier as being compatible with the intended use in accordance with the engineering standards of the heavy truck and

construction equipment industry and as set forth in the following industry standardization

publications:

Society of Automotive Engineers (SAE) Tire and Rim Association (TRA)

American National Standards Institute (ANSI) Industrial Fasteners Institute (IFI)

Truck Trailer Manufacturer's Association (TTMA) American Society of Testing and Materials (ASTM)

Friction Materials Standards Institute (FMS)

3.2.11 Metric components in equipment. The use of metric components in equipment shall be identified. The contractor shall identify metric tool requirements for each level of maintenance. Metric usage shall conform to ASTM-E-380, Metric Practice Guide

(ANSI-Z-210). Metric equivalents may be used either as the primary standard of measurement,

or as the secondary standard, in parentheses. Where metric equivalents in parentheses are not considered practicable, a tabulation of equivalents shall be depicted.

3.2.12 Screw threads and fittings. Screw threads and fittings shall be based on United States

Standards and shall be identified when metric components are used.

3.2.13 Recycled, virgin and reclaimed materials. The use of recycled, virgin and reclaimed materials which meets or exceed the requirements of the applicable material specifications without jeopardizing the intended use of the end item shall be encouraged.

3.2.14 Fuel conservation. Engine and power train combinations selected shall be the most fuel efficient components which otherwise meet specified performance criteria. Engineering data and performance calculations submitted under requirements of the solicitation shall include fuel economy calculations based on a road speed of 30 miles per hour (mph) Class 1 Roads, Factor-Fair as specified in table 9 of SAE J688, at a gross combination weight (GCW) of the vehicle combination, with a gradeability of 0.5 percent, ambient temperature of approximately

60°F. In addition, fuel consumption shall be provided with the vehicle at idle speed. The coolant temperature of the engine and the transmission and converter shall be provided.