TY JOUR TI Analysis of the causes of damage to frame bearings and crankshaft of Caterpillar 3412 diesel-generator KW marine diesel generator KW causes of frame bearing damage KW causes of crankshaft damage KW Caterpillar diesel KW low quality lubricating oil KW diesel crankcase oil level below normal KW diesel crankcase oil level above normal JO Vestnik of Astrakhan State Technical University. Series: Marine engineering and technologies AU Pastukhov, S.. AU Sobolenko, A.. PY 2025 IS 2025 PB Astrakhan State Technical University