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.

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MIL-T-62255C(AT)

reflectance of MIL-E-52798 or MIL-E-52835, and informational markings shall be located as follows:

(a) Safety and instructional markings. Markings such as tire pressure, fuel type, fill level of liquids, towing, lifting, tiedown and center of gravity shall be black lusterless letters or numerals no larger than one inch.

(b) Concealed marking. When specified (see 6.2), concealed marking shall consist of the registration number only, and shall be applied as specified in 4.3 of MIL-STD-642.

(c) Vehicles supplied to foreign nations. When specified (see 6.2), vehicles supplied to foreign nations, temporary registration numbers shall be furnished as specified in 4.4 of

MIL-STD-642.

3.1.1.1.3 Data plates and warranty notice. Instruction, caution, identification, military model designator and National Stock Number (NSN), operating and data plates shall be furnished and installed. The plates shall be in accordance with Type III, Composition A or Composition C of MIL-P-514, or standard commercial practice. When foil is employed for Composition C, the plate shall be in accordance with Type I, Class I of GG-P-455. Foil shall not be used for exterior plates. Vehicle data plates and warranty notice shall be in accordance with MIL-STD-1223.

3.1.1.2 Rustproofing. Vehicle shall be rustproofed in accordance with MIL-STD-1223. Undercoating is not acceptable. In addition, all chassis frame members, enclosed areas, boxed-in areas, such as lights and under floor pan, and the vehicle cab shall be rustproofed. The material may be applied by using an atomized spray, pressure gun or brush. Metal surfaces shall be cleaned prior to the application of rustproofing. Dissimilar metals shall be installed as specified in 5.8 and Table IX of MIL-STD-193. Certified test report shall be furnished to the engineering office of the procuring activity.

3.1.1.3 Heavy duty cooling system. Heavy duty cooling system shall be furnished. The cooling system shall maintain the coolant at a temperature below the boiling point, with the vehicle loaded to the rated GVWR and operated at sea level, and in an ambient air temperature of not less than 125°F. Cooling system radiator shall be of at least 1400 square inches and of sufficient depth to meet the cooling requirements specified. Certify that the cooling system is matched and rated in conjunction with interfacing components.