The pump is connected to the engine, and it pumps fluid (usual oil) into your torque converter. The turbine is connected to the gearbox, and it spins if the fluid within the pump hits it. Indicators of soiled transmission fluid include things like the presence of Grime and metallic shavings https://louismonll.blogchaat.com/34167742/5-tips-about-filter-gearbox-you-can-use-today