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 shells; 8 - main bearing shells; 9 - thrust half ring, limiting the axial movement of the crankshaft; 10 - flywheel; 11 - gearbox primary shaft centering bearing; 12 - toothed pulley of the crankshaft; 13 - crankshaft pulley; 14 - oil pump drive gear; 15 - rear crankshaft oil seal