The Plunger Shaft in a governor control air actuator works in the functioning of the governor system, which is responsible for controlling the speed or output of an engine. The primary function of the plunger shaft is to convert the air pressure signals from the governor control system into mechanical movement that adjusts the fuel supply to the engine.

Attributes:
• Converts air pressure signals into mechanical movement.
• Withstand operational stresses and environmental conditions.
• Actuates the engine's fuel control mechanism.

Applications:
The Plunger Shaft is used to control the position of internal components within the governor-control air actuator. It moves in response to changes in air pressure to regulate the actuator's function.