What should be regularly checked in a locomotive's fuel system?

Regular checks of the fuel lines for leaks in a locomotive's fuel system are crucial because leaks can lead to serious hazards, including fire risks and environmental contamination. Maintaining the integrity of the fuel lines ensures that fuel is delivered properly to the engine without any losses. Monitoring for leaks can also help prevent operational inefficiencies, as a leak can lead to reduced fuel pressure and performance issues in the locomotive.

In contrast, while oil pressure levels, brake fluid quality, and battery voltage status are important components of locomotive maintenance, they are not specific to the fuel system. Regular maintenance of these aspects is essential but falls outside the focus of the fuel system checks. Therefore, ensuring the fuel lines are free from leaks is a critical practice for safe and efficient locomotive operation.