The pump is connected to the motor, and it pumps fluid (common oil) in to the torque converter. The turbine is linked to the gearbox, and it spins in the event the fluid from the pump hits it. Your car is Ordinarily inaudible while you are sitting in neutral gear. https://jaidenkwelr.blogmazing.com/33236501/little-known-facts-about-filter-gearbox