Pic. 3.53, Connecting rod and piston group: 1 - Nut of the bottom cover of the connecting rod; 2 - The bottom cover of the connecting rod; 3 - Lower insert; 4 - Piston and connecting rod; 5 - Top liner; 6 - Top compression ring; 7 - Lower compression ring; 8 - Oil scraper ring; 9 - Piston pin; 10 - Piston; 11 - Connecting rod; 12 - Bolt.