TM 10-3930-669-34 2. LOW  ENGINE  OIL  PRESSURE  (OIL  PRESSURE  GAUGE  CONTINUOUSLY  READS  LESS  THAN  30  TO  60  PSI [207 - 414 KPA] AT 625 TO 750 RPM) (CONT). KNOWN INFO TEST OPTIONS Oil level OK Visual inspection. Oil suction tube OK. Oil tube OK REASON FOR QUESTION Oil pump OK. If oil pump seal is faulty. engine POSSIBLE PROBLEM Soil pressure will below. Oil pump seal faulty. Rod and main bearings faulty. Rifle lines clogged. Oil pump pressure valve faulty. KNOWN INFO TEST OPTIONS Oil level OK. Visual inspection. Oil suction tube OK. Oil tube OK. REASON FOR QUESTION Oil pump OK. Oil pump seal OK. If rod or main bearings are faulty, engine oil pressure will POSSIBLE PROBLEMS below. Rod and main bearings faulty. Rifle lines clogged. Oil pump pressure valve faulty. Replace oil pump (Para 3-12).  Go to Step 7 of this Fault Replace faulty bearings or engine(para 3-3). Go to Step 7 of this Fault 2-28