MIL-T-62145 Trucks: Elevating Body, Diesel And Gasoline Engine Driven, 21,000 To 39,500 Pounds Gvw, 4X2 And 6X4, CommercialThis specification covers diesel and gasoline engine driven four-wheel, two-rear-wheel drive, and six-wheel, four-rear-wheel drive vehicles having minimum gross vehicle weights GVW of 21,000 to 39,500 pounds, for normal operating conditions. The vehicles are commercial trucks equipped with stake and platform or van bodies, capable of elevating the body and cargo to a specified height for loading and unloading the cargo into and out of aircraft. The vehicles procured under this specification are commercial items which shall be warranted by the manufacturer as specified in acquisition documents.

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MIL-T-62145E

3.4.3.1  Air cleaner.  An air cleaner shall be furnished.

3.4.3.2  Fuel tanks.  The fuel tank(s) for class A and B vehicles, shall be not less than

50 gallons total capacity (43 gallons for vehicles destined for California); and for class C, D and

E vehicles, shall be not less than 90 gallons total capacity.  When more than one tank is furnished

on diesel engine driven vehicles, means shall be provided to assure equalized fuel level in both tanks.  When more than one tank is furnished on gasoline engine driven vehicles, a selector valve connecting either tank to the engine fuel-intake shall be provided and means shall be provided to monitor the fuel level of either tank from a single fuel gage.

3.4.4  Exhaust system.  The exhaust system shall conform to Federal Motor Carrier Safety Regulation 393.83.  If vertical exhaust mufflers are furnished, a full exhaust heat shield shall be furnished to protect personnel loading cargo from the front of the body.  Vertical exhaust systems shall be provided with a hinged rain cap.  A spark arrester shall be furnished, except for vehicles with turbocharged engines.  The spark arrester shall have an 80 percent arresting efficiency when rated in accordance with SAE J350.

*    3.4.4.1  Exhaust system safety shield.  The exhaust system or hydraulic system shall be fully shielded so that, in the event of a hydraulic line rupture or hydraulic fluid leak, the hydraulic fluid will not come into contact with any part of the vehicle exhaust system.

*    3.4.5  Transmission.  Unless otherwise specified (see 3.4.5.3), a manually shifted transmission shall be provided.  The input torque capacity of the transmission shall be at least equal to the maximum torque delivered by the engine.  The transmission shall be provided with two power takeoff openings conforming to SAE J704.  The transmission shall provide for maximum ease of shifting in all speeds.

*    3.4.5.1  Speeds.  Vehicles with manual transmission shall be provided with the number of vehicle forward speeds specified in table VII.  When more than five forward speeds are required, a multispeed axle or an auxiliary transmission shall be furnished.  Gear ratios in the transmission and other gear selection equipment shall be matched to provide a progressive shifting pattern throughout the complete range, and shall provide the vehicle performance specified in 3.3.1 through 3.3.1.3.

TABLB VII.  Minimum number of vehicle forward speeds.

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