TM 5-3805-258-24-1ENGINESYSTEMS OPERATIONFUEL SYSTEMOil also goes from the bottom of the front governorhousing through a passage to the fuel pump housingand to governor servo (2). The governor servo giveshydraulic assistance to move the fuel rack.The remainder of the oil goes through passagesto the rear of rear governor housing (3), through airfuel ratio control (1) and back into another passagein the rear governor housing. Now the oil goes intothe compartment for the governor controls. Drainhole (8) keeps the oil at the correct level. The oilin this compartment is used for lubrication of thegovernor control components and the oil is thesupply for the dashpot.The internal parts of the governor are lubricatedby oil leakage from the servo and the oil is thrown byparts in rotation. The flyweighting gets oil from the passagecamshaft.carrier thrust bear-at the rear of theOil from the governor returns to the oil panthrough a hole in the bottom of the front governorhousing and through passages in the support andcylinder block.GOVERNORThe governor controls the amount of fuel neededby the engine to maintain a desired rpm.The governor flyweights (8) are driven directly bythe fuel pump camshaft. Riser (10) is moved byflyweights (8) and governor spring ( 1). Lever (7)connects the riser with sleeve (2) which is fastened tovalve (3). Valve (3) is a part of governor servo (5) andmoves piston (4) and fuel rack (6). The fuel rackmoves toward the front of the fuel pump housing (tothe right in the illustration) when moved in theFUEL OFF direction.3 -7
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