Removal and installation of the primary shaft, secondary shaft, differential (VW Caddy 3)

List of components and parts of the primary shaft, secondary shaft, differential, gear shift mechanism and engagement forks with installation notes for Figure VC4.038:
1. Differential.
2. Gearbox housing.
3. Oil drain plug: 25 Nm.
4. Shaft with flange and spring.
5. Cone head screw: 25 Nm.
6. Screw: 5 Nm + 90° (is replaced by a new one).
7. Hexagon nut 23 Nm (is replaced by a new one).
8. Sealing ring.
9. Axis.
10. Screw: 5 Nm + 90° (is replaced by a new one).
11. Gear selection and engagement mechanism.
12. Screw: 5 Nm + 90° (is replaced by a new one).
13. Reverse light switch: 20 Nm.
14. Seal.
15. Gear shift mechanism.
16. Primary and secondary shaft assembled with support bearings.
17. Reverse gear support.
18. Reverse gear.
19. Screw: 25 Nm + 90° (is replaced by a new one).
20. Oil catch can.
21. Magnet.
22. Oil guide part.