![]() On the electric motor model, the impeller is mounted on the extended shaft of the electric motor. On the gasoline engine model tank and pump unit, the engine is connected to the pump by an intermediate coupler and the impeller is screwed on the extension of the engine crankshaft. The pump is a 50-GPM, self-priming, centrifugal pump. A governor controls the engine speed by varying the throttle opening to suit the pump load. A radio-shielded magneto supplies the ignition spark. The gasoline engine is a one-cylinder, four-cycle, air-cooled, hand-cranked engine. The electric motor is controlled by an ON-OFF toggle switch or an ON-OFF cable assembly connected to the junction box. Electrical connection is provided by an intervehicle power cable attached to the NATO slave receptacle of the vehicle on one end and the electric motor on the other. The electric motor is powered by the vehicle electrical system. The pumping assembly as shown in Figure 24-4 includes a pump and engine assembly, a filter/separator, a manifold, hose reels, a ground reel, hose and fittings, and related equipment. ![]() The 50-GPM pumping assembly is used to issue bulk petroleum. A general description of the components and installation procedures follows. A newer model tank and pump unit as shown in Figure 24-3, consists of tank control levers at the rear of the unit, a bottom loading port, 500-gallon fuel tanks, and a bottom loading valve that opens automatically when fuel pressure is applied and is closed automatically by the jet level sensor when the tank is full (when filled through bottom loading port ). The tank and pump unit can be used to refuel aircraft because the filter/separator complies with Military Specification MIL-F-8901E. It is necessary to transport the tank and pump unit on the 5-ton cargo truck because when the unit is filled with fuel it exceeds the load limits of the 2½-ton cargo truck. ![]() The unit is designed to be transported on the 5-ton, 6X6, cargo truck. However, the gasoline pump is being replaced by the electric pump when requisitioned. ![]() One electric model and several gasoline models of the tank and pump unit are currently in use. The tank and pump unit as shown in Figures 24-1 and 24-2, consists of a 50-GPM pumping assembly, two 600-gallon aluminum tanks, and related equipment. UNIT AND VEHICLES USED TO TRANSPORT BULK PETROLEUM ![]()
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