Operating propellers in the reverse range resets what aspect of the fuel system?

The operation of propellers in the reverse range influences the fuel-topping governor, which is a critical component in managing engine power and efficiency. When propellers are set to operate in reverse, the fuel-topping governor adjusts itself to a maximum setting that prioritizes higher propeller RPM. Selecting 95% propeller RPM allows for optimized performance and responsiveness from the engine, ensuring that the propeller can effectively counteract propulsion and operational demands in reverse.

This adjustment of the fuel-topping governor is designed to maximize power output while in reverse, which is essential for maneuvers such as stopping or reversing direction efficiently. Understanding the significance of this setting helps in the operational procedures of the T-54A's propulsion system, ensuring that it operates within the safe and effective parameters established by its design.