1. Gear-4 driven gear snap ring
2. Gear-4 driven gear
3. Gear-3 driven snap ring
4. Gear-3 driven gear
5. Gear-2 driven gear
6. Gear-2 synch ring
7. Gear-2 needle roller bearing
8. Gear-2 needle roller bearing bush
9. Gear-1 and gear-2 synchronizer assembly
10. Gear-1 synch ring
11. Gear-1 driven gear
12. Gear-1 needle roller bearing
13. Fixing bolt of bearing seat
14. Closing ring of gear-1 needle roller bearing
15. Intermediate bearing seat of output shaft
16. Differential gear assembly
17. Damping ring
18. Spreader spring—damping ring
19. Output flange
20. Disk-shape gasket of output flange
21. Snap ring of output flange
22. Blind cover of output flange
23. Fork shaft
24. Gear-5 fork bushing
25. Gear-3 and gear-4 forks
26. Gear-5 fork guide board
27. Guide board of reverse gear fork
28. Gear-1 and gear-2 forks
29. Input shaft assembly
30. Idler shaft
31. Idler assembly
32. Clutch housing assembly
9