Checked over the condition of the Cummins ISX engine. Removed the sump, oil pump and piping from the engine. Removed and inspected the engine crankshaft, main and big end bearings. Found the bearings had normal wear and the crankshaft journals were in good condition. Cleaned all components. Fitted a new set of main, thrust and big end bearings to the engine crankshaft. Torqued to spec. Refitted the oil pump and piping to the engine. Refitted the sump to the engine with a new gasket. Removed the engine valve cover and inspected the camshafts and components for wear, found no faults. Cleaned and refitted the valve cover. Changed the oil filter and filled the engine with new oil. Connected a temporary water and fuel supply to the engine. Ran the engine and checked over, all ok. Connected the diagnostic computer and downloaded the engine data.