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)

3.4.11 Rotary pump discharge rate (water tank truck M50A2). The pump shall eject all water from itself and from its piping within two minutes, when installed with the gate valve in the suction line partly open, with the discharge port at the side of the pump open and the tank emergency valve closed. With suction port 16 feet above the water source, and the discharge hose placed in a filler opening of one compartment, the pump shall prime itself when starting dry, and shall produce a flow of water of not less than 70 gallons per minute at its discharge outlet, with the water at not more than 50°F temperature, using 40 feet of 2-inch suction hose with a foot strainer, and 25 feet of 1 1/2 inch discharge hose. The dispensing system shall operate without malfunction or leaks.

3.4.12 Dump trucks (M343A2). With the hydraulic system filled with engine oil of the type and grade specified in Table IV for the applicable temperature, and adjustments completed shall demonstrate performance requirements with loads specified herein during dumping operations. The hydraulic system controls shall control and actuate the system to raise and lower the dump body and hold body in any position during the raising and lowering range of operation. The controls shall operate without binding, interference, or failure using hand effort only.

3.4.13 Drop side cargo body. The drop sides and tailgate shall be capable of being raised and lowered freely without binding. The locking devices shall retain the sides and tailgate

rigidly in closed position without chatter or failure using hand effort only. The drop sides on

model 35A2C shall be interchangeable from left to right sides and from right to left.

3.4.14 Winches. Unless otherwise specified (see 6.2) winches conforming to

MS 51352-1, controls and equipment shall be installed in accordance with applicable drawings

on vehicles requiring winches. When specified (see 6.2) a snatch block conforming to

drawing 11631700 and a chain assembly conforming to drawing 7077063 shall be furnished with

each winch.

3.4.15 Wheel balance. Wheels, hubs, brake drums, tires and tubes shall be in balance to prevent front wheel vibration and tire wear.

3.4.16 Radio-interference suppression. Unless otherwise specified (see 6.2) each vehicle shall be radio-interference suppressed in accordance with the tactical vehicle requirements

Class IIIA of MIL-STD-461.

3.5 Wood treatment. All wood parts for vehicles furnished in accordance with this specification shall be cleaned and treated in accordance with the requirements of MIL-STD-193.

3.6 Undercoating. When specified (see 6.2), vehicles shall be undercoated in accordance with MIL-STD-193.

3.7 Painting, marking, and data plates.