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)

4.3.2.8.5 Cramping angle test. To determine conformance to 3.4.9 during tests the vehicle shall be cramped as specified and checked for requirements specified, in addition all steering controls, and steering of vehicle at all speeds shall be observed for ease of operation, and vehicle control.

4.3.2.8.6 Exhaust system check. To determine conformance to 3.4.3.2 the exhaust system shall be tested for conformance to U.S. Army Test and Evaluation Command, Common Engineering Test Procedure 2-2-614, Toxic Hazards Test for Vehicles. Tests shall be conducted with the hard top/soft top in place and windows rolled up. Test will be conducted when the Arctic Kit is installed.

4.3.2.9 Fuel dispensing filter separator system test (M49A2C). To determine conformance to 3.4.10 and 3.4.10.1, using number 1 diesel oil or solvent conforming to P-D-680 the fuel dispensing filter separator system shall be operated. The system shall meet the gallons

of discharge per minute, fuel cleanliness requirements, and the dump valve shall be tested for proper operation. The dispensing system shall operate without malfunction or leaks. After completion of the test new filtering elements and fuses shall be installed. This test shall be accomplished at place of manufacture and Government Proving Grounds (see table XI).

4.3.2.10 Water tank rotary pump operational test. To determine conformance to 3.4.11, the water rotary pump shall be operated as specified and checked for self priming ability and gallons per minute of discharge.

4.3.2.11 Dump truck operational test. To determine conformance to 3.4.12, with specified load in dump body the controlling and operating mechanisms shall be operated and checked for performance requirements.

4.3.2.12 Drop side cargo body interchangeability. To determine conformance to 3.4.13, the drop sides shall be changed from one side to the other and checked for interchangeability requirements.

4.3.2.13 Winch operational tests. To determine conformance to 3.4.14, the vehicles with winches installed shall have the winch functionally tested for conformance to requirements to specification for specified winch.

4.3.2.14 Body winch operational test (M764). To determine conformance to 3.3.11.1, demonstrate body winches and mountings ability to withstand 15,000 pounds rated line pull at first layer on bare drum. Pull shall be checked by raising a 15, 000 lb weight 3 to 5 ft high. It will also be demonstrated that the winch shaft shear pin, T.S., having been broken (between

15,000 and 16,000 pounds) by an overload, will provide for a free wheeling drive sprocket and may be replaced according to instructions found on the vehicle. Winch must demonstrate

capability of allowing a man to take off cable by hand. Cable must rewind evenly on drum under tension with power applied.