MIL-S-62294 Semitrailer, Stake: Two Level Decks, With Hydraulic Loading Ramp, 20 Ton, Modified CommercialThis specification covers a commercial, 20 ton stake semitrailer with upper gooseneck and lower main decks and a tandem axle. The semitrailer is fitted with a kickup gooseneck deck, lower main deck, hydraulic rear loading ramp, hydraulic winch, and an auxiliary engine. The semitrailer is intended for transporting cargo, fork lift trucks, and fork lift trucks with cargo. Each vehicle produced under this specification is a commercial item which is warranted by the manufacturer as specified in acquisition 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

MIL-S-62294B(AT)

4.3.7.1 Ramp load lifting test. A load of not less than 20,000 pounds shall be secured on the ramp with the load center of gravity positioned over the center of the ramp. The ramp shall be operated as specified in 4.3.7. Ramp operation shall conform to the requirements specified in 3.3 and 3.7.4. The test shall be conducted five times with mounted controls and repeated five times with remote controls when furnished.

4.3.8 Hydraulic winch test. The winch shall be tested for conformance to the line pull and line speed requirements as specified in 3.8 when the winch is powered by the hydraulic pumping system specified in 3.8.5. The winch cable shall be unwound from the drum until there are no overlapping strands of cable on the drum and shall be attached to a minimum of a 9,000 pound line pull load. The winch shall then be activated and shall pull the load at a speed of not less

than 14 feet per minute.

4.3.9 Remote control unit.

4.3.9.1 Reel assembly. The remote control unit cable shall be extended 60 feet and retracted. Cable extension, retraction, and reel latching shall conform to the requirements in 3.8.3. The test shall be repeated for cable extensions of 25 feet, 10 feet and 5 feet.

4.3.9.2 Control operation. The remote control unit shall be used to operate the rear ramp

and winch as specified in 4.3.7 and 4.3.8. Operation shall conform to the requirements specified in 3.8.3.

4.3.10 Electrical test. An electrical test shall be conducted on the first production vehicle to determine that all vehicle lights are functioning. In addition, when an interconnected 24-volt system is furnished, the circuits of the 12-contact receptacle shall be energized with not less than

28 volts dc regulated voltage for a time sufficient to stabilize the temperature of the resistor assembly for not less than 30 minutes in an ambient temperature of not less than 77°F. After the test, the resistor assembly, including resistors, wiring and adjacent components shall be

examined for evidence of overheating, deterioration or damage.

4.3.11 Engine sound level test. Engine sound level shall be measured during winch and ramp tests to determine conformance to 3.8.5.5.1.

4.3.12 Stake panel test. When stake racks are specified the racks shall be examined for conformance to 3.9. The front panel shall be able to be removed and replaced when unbolted from the chassis. Side sections shall be easily removable, and shall be interchangeable, by disengaging and engaging the locking devices. The use of small hand tools is permitted.

The front panel shall be subjected to an end thrust load of 50 pounds per square foot, when interlocked with the adjacent side racks, without deformation or failure of the interconnecting devices.