The pump is connected to the motor, and it pumps fluid (typical oil) into your torque converter. The turbine is connected to the gearbox, and it spins when the fluid with the pump hits it. A bad transmission filter will lead to your gears to grind on one another plus https://filter-gearbox41974.blogproducer.com/41137055/an-unbiased-view-of-filter-gearbox