The one you can't find is probably the suction filter, it is usually located inside the transmission housing. There will be a small plug type cover over it. Mine is located on the same side as the cartridge filter and a bit to the rear. I have to remove the loader subframe element that runs from the left loader tower to the rear axle housing in order to pull the suction filter all the way out of the transmission case. The suction filter on mine just needs to be cleaned and inspected, not replaced.