TM 10-4320-310-14
Section III. TECHNICAL PRINCIPLES OF OPERATION
1-15. CENTRIFUGAL PUMP UNIT
ENGINE - Bolted to frame assembly. Provides the power necessary to drive the pump. Includes:
LUBRICATION SYSTEM - oil splash lubricates the entire drive and governor mechanisms.
COOLING SYSTEM - includes a blower ring, mounted to the flywheel, which blows cool air through crankcase
housing ports onto the cylinder
FUEL SYSTEM - includes a fuel lift pump, fuel injection pump, venting pipe, fuel tank, filter and fuel pressure pipe.
The fuel lift pump pumps fuel from the fuel tank through its filter, to the fuel injection pump, then to the injector through
the fuel pressure pipe.
EXHAUST SYSTEM - includes a muffler and protective screen. The exhaust system transfers exhaust gases from
the engine to the muffler. The muffler quiets the sound and reduces the temperature of the exhaust gases.
1-6
