Dragging left rear disc brakes

John Deere would be no help. They sold that part of business to Oshkosh which was bought by Freightliner. Another poster gave me all the part numbers on an older post I made. The brakes front and rear are Meritor.

Thanks to all for the information. Total brake overhaul including hoses would probably be safest bet. All were getting a little warm but only left rear got smoking hot, literally.