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)

3.4.10.5 Rear window. A rear window shall be provided. The window and window operating mechanism shall be accessible to the driver in a seated position. The exterior of the window shall be provided with a screen. The screen shall be hinged and secured on the outside so as to enable maintenance of the window. The screen shall be of flattened, expanded metal, one-half inch opening and of 16 or 18 gage. The frame, screen and associated hardware shall be of corrosion resistant material.

3.4.10.6 Pocket for equipment record folder and manual. A pocket for the vehicle operator's manual and the Government Furnished Log Book Binder (NSN 7530-01-065-0166) shall be furnished in the vehicle cab. Equipment Control Record DD Form 2408-9 will be inserted in the Log Book Binder for each vehicle (see DD Form 1423).

3.4.10.7 Engine housing and cab aft guard plate. A 3/8 inch steel plate shall be furnished at the rear of the engine housing and the vehicle cab. The rear window shall not be obscured by the plate. The steel plate shall protect the housing, engine and the vehicle cab and driver from damage due to sliding loads on the towed vehicle and when coupling to a towed vehicle. Plate shall be bolted to the vehicle for removal of any vehicle component. Plate shall accept the acceleration factors of Federal Motor Carrier Safety Regulation 393.106.

3.4.10.8 Front bumper and bumper guard. Channel type heavy-duty front bumper and bumper guard as specified in 3.4.10.8.1 shall be furnished.

3.4.10.8.1 Front bumper guard. A front bumper guard shall be furnished. The bumper guard shall be hinged at the bottom and braced to allow the vehicle cab to be tilted forward. The guard shall at least be two-inch by three-inch steel square tubing haying a minimum wall thickness of

0.1875 inches, with equally spaced vertical uprights of two-inch square tubing having a

minimum, wall thickness of 0.1875 inches. The height of the bumper guard shall protect the lower front of the engine compartment and the area below the cab windshield. Bumper guard corners shall be rounded to protect personnel.

3.4.11 Power steering. Power steering shall be furnished. Power steering mechanism shall enable vehicle to be manually steered in event of hydraulic steering or engine failure. An oil filtering system shall be furnished. Sheaves where used, shall be aligned and of the correct pitch diameter to preclude belt from run-off. Belts shall be of the correct length and width to preclude belt interference with any component. Steering column shall be braced and secured and properly alined. Steering control system shall conform to Federal Motor Vehicle Safety Standard