What is the correct method to disengage a midship transfer driven pump?

The correct method to disengage a midship transfer driven pump involves reducing the engine speed to idle and placing the transmission in neutral. This process is essential because it ensures that the pump's operation is stopped safely without causing damage to the pump or the transmission. Bringing the engine to idle reduces the RPM, which minimizes hydraulic forces and decreases the risk of cavitation or other operational issues within the pump. Additionally, placing the transmission in neutral ensures that the vehicle is stationary and helps prevent any unintended movement, which could be hazardous during the disengagement process.

The other approaches suggested would not be safe or effective. For instance, reducing engine speed to maximum would likely increase pressure in the system, potentially causing damage during disengagement. Engaging the brake alone does not address the pump disengagement process effectively and could risk overheating or straining the mechanical systems involved. Turning off the engine before disengaging might lead to pressure buildup in the system or make it difficult to control the pump's disengagement safely. Lastly, simply pulling the pump lever does not take into account the necessary precautions that need to be taken to ensure a smooth transition and avoid mechanical failure.