MIL-T-46780 Truck, 2 1/2 Ton, 6 X 6, Military Design, M44A2 Multi-Fuel Engine SeriesThis specification covers M44A2 series general and special purpose 2 1/2 ton, multi-fuel engine driven, six-wheel six-wheel drive, military design truck chassis, trucks, and truck tractors.

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MIL-T-46780D(AT)

4.3.2.15  Boring machine check.  (M764)  To determine conformance to 3.3.11.2, demonstrate machine's ability bore vertical holes 30 inches in diameter and 10 feet in depth. Demonstrate ability to bore holes 5 feet deep with the 16-inch auger at an angle of 45° from vertical to the left or right.

4.3.2.16  Outrigger check.  (M764)  To determine conformance to 3.3.11.4, demonstrate stability of truck during boring and winching operations through the use of left-hand and

right-hand hydraulic outriggers.  Truck springs must be free of overload during working

operations.  Demonstrate ability to lock cylinders or outriggers to prevent drifting during vehicle travel.

4.3.2.17  Derrick operation test.  (M764)  To determine conformance to 3.3.11.5, with the aid of the winch, erect the derrick in an "on truck tripod" position using proper sheaves and spindle bars, etc., lift a weight of 5,000 pounds five feet from the ground.  Demonstrate ability to remove, install and straighten poles 45 feet in length.  Demonstrate ability to lift a 9,000 pound weight with the center leg on the ground and supported by the I beam.

4.3.2.18  Derrick support jack test.  M764)  To determine conformance to 3.3.11.6, remove 15-ton capacity jacks from truck body and demonstrate truck stability during derrick operations.  Do not move truck while a weight is suspended from the pole derrick.

4.3.2.19  Wheel chocks check.  (M764)  To determine conformance to 3.3.11.7 demonstrate wheel chocks ability to restrict movement of truck during derrick operations with brakes applied.

4.3.3  Comparison test.  The Government may select vehicles anytime during the contract production period and conduct comparison tests.  Test shall be conducted at a Government test site as outlined in Table XII and Table XIII as applicable.  Test vehicles loaded as specified in

3.4.2 and 6.6, with all on-vehicle material stowed in place, will be subjected to all previously performed examinations and all test in Table XI as applicable.

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