What is one method for cooling an overheated pump?

Discharging water is an effective method for cooling an overheated pump because it allows for the removal of heat generated during the pumping process. When a pump overheats, it can lead to damage or reduced efficiency. By discharging water, the flow helps dissipate heat, enabling the pump to return to optimal operating temperatures. This method not only cools the pump itself but also aids in maintaining the overall system's integrity.

Increasing engine speed could potentially exacerbate the overheating issue by generating more heat rather than cooling the pump. Using a special lubricant may improve internal dynamics within the pump, but it does not directly address the immediate need for cooling as effectively as discharging water. Blocking the intake would restrict the flow and likely worsen the overheating problem, as it reduces the ability of the pump to cool itself through water circulation. Therefore, discharging water is the most direct and effective method for cooling an overheated pump.