Crank mechanism parts: 1 - crankshaft; 2 - connecting rod; 3 - piston; 4 - piston rings; 5 - piston pin; 6 - piston pin retaining ring; 7 - connecting rod bearing set; 8 - main bearing shell set; 9 - middle main bearing shell with thrust half rings; 10 - flywheel; 11 - primary shaft bearing of the gearbox; 12 - toothed pulley of the crankshaft; 13 - crankshaft pulley; 14 - rear crankshaft oil seal; 15 - crankshaft toothed pulley key