Rear brake: 1. Brake drum. 2. Retainer. 3. Clamping spring pads. 4. Secondary brake pad. 5. Spacer spring 6. Lower return spring. 7. Automatic gap adjuster. 8. Brake shoe return spring. 9. Top return spring 10. Primary shoe. 11. Rear working brake cylinder. 12. Air outlet. 13. Air outlet cap. 14. Brake pipeline. 15. Wheel speed sensor 16. Base plate bushing. 17. Spring washer. 18. Clamping pin. 19. Bushing of the base plate. 20. Brake base plate