Hi all,first time poster here.. I have a Massey Ferguson MK1,,,Hydraulic oil was low,no problems at all with Hydraulics or transmission,,so decided it was a good time to change oil and Filter...drained oil and removed side plates (pto lever on one ,dipstick on the other side.....I have a good view of pump and there in NO Filter....Ive asked a few tractor mechanics and I Know by the way they look at me they think i am blind....Im looking for a spin off canister with an element inside. They have even shown me the filter cartridge..Please does anyone know if the early models didnt have a filter.......