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Home >> Cadillac >> 1977 >> Seville >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 260" OLDSMOBILE, 350" CADILLAC 350"(VIN Code R) & 403" BUICK, OLDSMOBILE & PONTIAC >> Engine Oiling >> Oil Pump

Oil Pump

Located on rear main bearing cap. Do not remove drive shaft extension washers (serviced as a unit). Pressure relief valve clearance in bore should be 0.0025 - 0.005". End clearance of gears should be 0.0025 - 0.0065".

Fig 1: Oil Pump Assembly
G09344351Courtesy of GENERAL MOTORS COMPANY
Fig 2: Engine Oiling System
G09344352Courtesy of GENERAL MOTORS COMPANY