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TM 10-4320-343-14
SECTION III. PRINCIPLES OF OPERATION
1.14 FUNCTIONAL DESCRIPTION. The 350 GPM pumping assembly is a mobile pump that transfers gasoline, jet
fuels, and light liquid petroleum fuels. It is trailer mounted and is towed by a vehicle for short distances. When moved,
the 350 GPM pumping assembly is disconnected from the towing vehicle and then stabilized. Hoses are connected to the
equipment between the fuel source and destination. The engine is started and the fuel flow is controlled by gate valves.
The following paragraphs provide a detailed functional description of the 350 GPM Pumping Assembly.
1.14.1
Operator's Functional Description.
1.14.1.1 Exhaust System. The exhaust system consists of the muffler, exhaust tubing, and spark arrester. The exhaust
system provides a noise reduction.
1.14.1.2 Air Cleaner. The air cleaner provides filtered air to the combustion chambers of the engine. It consists of two
filter that filters the air before it reaches the intake manifold of the engine.
1.14.1.3 Electrical System. The electrical system provides the voltage and current required to start and operate the
engine.
1.14.1.4 Fuel System. The fuel system is attached to the fuel tank and provides fuel to the engine. The amount of fuel
going to the engine determines the engine speed. Two types of controls are used. One type uses a manually turned
knob to control engine speed and the other type controls engine speed automatically.
1.14.1.5 Engine Assembly. The engine assembly provides the drive to operate the pump assembly and is controlled by
either a mechanical or electrical control device.
1.14.1.6 Control Panel Assembly. The control panel assembly provides the controls and indicators required for pump
operation. The controls and indicators provided are described in chapter 2 and are as follows:
EMERGENCY STOP SWITCH
AMMETER
PUSH TO START SWITCH
SUCTION GAUGE
OIL PRESSURE BYPASS SWITCH
DISCHARGE GAUGE
OIL PRESSURE GAUGE
LIGHT SWITCH (RHEOSTAT)
TACHOMETER/HOURMETER
1.14.1.7 Regulator Assembly. The regulator assembly automatically controls the engine speed to ensure that the
output pressure is not changed.
1.14.1.8 Pump Assembly. The suction and discharge lines are connected to the pump assembly. The pump assembly
transfers fuel from one point to another.
1.14.1.9 Fuel Tank. The fuel tank provides storage for diesel fuel. It has a 19 gallon (71.9 liter) capacity. The tank has a
fuel level gauge, two fuel source selector valves, filler cap, drain plug, and overflow return fitting. The fuel level gauge
provides a visual inspection for the fuel level inside the tank. When the fuel level is low, fuel is added to the tank via the
filler cap. The fuel is routed from the fuel tank to the fuel system..
1.14.1.10 Wheel Mounted Frame Assembly. The wheel mounted frame assembly allows the 350 GPM Pumping
Assembly to be towed behind a mobile vehicle for short distances
Change 1 1-11
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