I have a farmall 656 and was changing rear tire out and when I went to jack tractor up axle shaft move up or down a little was leaking a little hydraulic fluid but had been stained like that since I bought tractor. How much end play or is their suppose to be any end play I know the John Deere final drives dang near don t have any end play or at least that what I got told. I am assuming the seal is out , cause when I jack it up or let it down once the axle shaft moves it presses against seal and oozes out hydraulic fluid. I m just worried I have a loose bearing that will eat out the housing.