Which tanks should be filled first when refueling the T-54?

Filling the wing tanks first when refueling the T-54 is important because these tanks are typically positioned at a higher elevation compared to the fuselage and auxiliary tanks. By filling the wing tanks first, the fuel can flow more freely by gravitational force, allowing for a more efficient and complete fill of the system. Additionally, filling the wing tanks helps to ensure that the center of gravity is maintained during the refueling process, which is crucial for the tank's stability and handling characteristics on the battlefield.

When wing tanks are prioritized during refueling, it minimizes the risk of air being trapped in the system, ensuring optimal fuel distribution and reducing the likelihood of pump cavitation or other operational issues that could arise if lower tanks are filled first. This procedure is part of overall best practices for tank refueling, aiming for operational efficiency and safety.