MIL-T-740 Trucks; 5 Ton, 6X6, Military Design, M39, M39A1, M39A2 And M809 SeriesThis specification covers general and special purpose 5 ton, gasoline, multi-fuel, and diesel engine powered, six-wheel, six-wheel drive, military design truck chassis, trucks, and truck tractors having single front and dual rear wheels.

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MIL-T-740G

4.4.12 Truck, stake, bridge transporting examination. To determine conformance to 3.3.11, truck stake body shall be examined for proper installation of all components as specified on applicable drawings and Figure 1.

4.4.13 Drop side cargo body examinations. To determine conformance to 3.3.12, the sides and tailgage shall be examined for completeness of assembly, proper mounting, and locking.

4.4.14 Performance. Conditions for performance shall be as specified in 3.4 as applicable.

4.4.14.1 Special kits operational tests. To determine conformance to 3.4.1, specific kit when furnished with a vehicle, or subsequent to arrival of vehicle for testing, shall be installed on vehicle and tested for operational requirements.

4.4.14.2 Environmental operational tests. To determine conformance to 3.4.2, the vehicle, properly serviced and equipped, shall be operated and stored at specified temperatures. The vehicle shall experience no evidence of damage as a result of such operation or storages.

4.4.14.3 Vehicle loading tests. To determine conformance to 3.4.3, the specific vehicle furnished shall be loaded in accordance with table V, VI, or VII as applicable.

4.4.14.4 Engine tests. To determine conformance to 3.4.4 and 3.4.4.1, during tests, the engine and components shall be observed for performance requirements, in accordance with applicable engine drawing or purchase description (see 3.3.5).

4.4.14.5 Cross-country operation test. To determine conformance to 3.4.5 and 3.4.5.1, the vehicle(s) shall be operated over cross-country terrain at specified speeds and observed for performance requirements.

4.4.14.6 Highway speed tests. To determine conformance to 3.4.6 through 3.4.6.2, the vehicle shall be operated at specified speeds and observed for performance requirements.

4.4.14.7 Towing and recovery operation test. To determine conformance to 3.4.6.3, vehicles shall perform recovery operations as specified and shall be observed for performance requirements.

4.4.14.8 Fording test. To determine conformance to 3.4.7, the vehicle shall be operated through water crossings at dept and for the time specified. Vehicle and components shall subsequently be examined for water damage, or detrimental water contamination.

4.4.14.9 Longitudinal grades test. To determine conformance to 3.4.8.1, vehicle shall be operated on specified grades and observed for performance requirements.

4.4.14.10 Side slope operation. To determine conformance to 3.4.8.2, the vehicle shall be operated on 20 percent side slopes with each side of vehicle up slope and observed for performance requirements.