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Steamtown's rangers receive a lot of questions about the Union Pacific "Big Boy" No. 4012. One of the most common questions is "what goes on up in the cab?" Join Ranger Alan as he provides a virtual tour of the locomotive's cab and learn just what a few of those red valves do!
Replacing the Tires of a Steam Locomotive
In March 2007, we had the opportunity to capture images to create this PowerPoint presentation (1.53MB) which explains the process of how a steam locomotive's tires are changed.
Last updated: September 15, 2022