My 4.2TD came with a factory PTO winch. I know these come in at least two different flavors.

Mine hasn’t been run in at least six years (the previous owner said he never had use of it and did not know how or if it worked) so I thought I ought to change the oil.

Being new to the world of the PTO winch, I have no idea how to change the gear oil in the winch. Like, where it comes out, where to out in, how much, etc..

Also, can the locking hub on the winch be swapped for a broken front axle hub in an emergency? The hubs look the same from the outside.