The National Iron & Steel Heritage Museum
The Parts of a Steam Locomotive

1. Firebox                             13. Valve Gear

2. Ashpan                             14. Regulator Rod

3. Water (Inside Boiler)      15. Drive Frame

4. Smokebox                       16. Rear Pony Truck

5. Cab                                   17. Front Pony Truck

6. Tender                             18. Bearing and Axlebox

7. Steam Dome                   19. Leaf Spring

8. Safety Valve                     20. Brake Shoe

9. Regulator Valve               21. Air Brake Pump

10. Superheater Header    22. (Front) Centre Coupler

11. Piston                             23. Whistle

12. Blastpipe                       24. Sandbox