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1. Tensioner housing; 2. cap nut; 3. Tensioner rod; 4. Retaining ring; 5. Clamping crack of the rod; 6. Plunger; 7. Tensioner spring; 8. Washer; 9. Plunger spring; 10. Camshaft sprocket; 11. Thrust flange; 12. Camshaft bearing housing; 13. Camshaft; 14. Connecting rod bearing shells; 15. Connecting rod cap; 16. Connecting rod; 17. Bushing of the upper head of the connecting rod; 18. Retaining ring; 19. Piston; 20. Top compression ring; 21. Lower compression ring; 22. Oil scraper ring; 23. Piston pin; 24. Thermal control plate piston; 25. Connecting rod bolt; 26. Flywheel toothed rim; 27. Flywheel; 28. Rear thrust half ring; 29. Front bearing of the input shaft of the gearbox; 30. Front thrust half ring; 31. Inserts of the central (3rd) crankshaft bearing; 32. Crankshaft oil channel plug; 33. Inserts 1, 2, 4 and 5 of the crankshaft bearings; 34. Crankshaft; 35. Crankshaft sprocket; 36. Generator drive pulley and coolant pump; 37. Nut; 38. Inlet valve; 39. Intake valve guide; 40. Exhaust valve guide; 41. Exhaust valve; 42. Support washer of the outer spring; 43. Support washer of the internal spring; 44. Internal valve spring; 45. External valve spring; 46. Spring plate; 47. Valve crackers; 48. Oil cap; 49. Retaining ring; 50. Adjusting bolt bushing; 51. Locknut; 52. Lever spring; 53. Valve drive lever; 54. Lever spring retainer plate; 55. Valve adjusting bolt; a, b, c - marks c. m.t. pistons of the 1st and 4th cylinders