What must be done to engage the pump gear?

To engage the pump gear, it is essential first to ensure the vehicle is stationary and secure, which is why engaging the parking brake is a critical step. By engaging the parking brake, the driver ensures that the vehicle does not roll or move unexpectedly during the operation of the pump. Following this, engaging the pump shift control allows for the proper transfer of power from the engine to the pump, enabling it to function effectively for firefighting operations.

This process is designed to prioritize safety and operational integrity, ensuring that the vehicle remains stable while the pump is engaged. Performing the operation out of sequence, such as revving the engine or activating lights and sirens first, could lead to unsafe conditions and does not adhere to the proper protocol for operating the fire apparatus. Therefore, the combination of engaging the parking brake and the pump shift control is the correct procedure to engage the pump gear efficiently and safely.