231 M.F power steering

[toronto1]

I have a 231 Massey tractor and my power steering is just about gone. I see the pump bolts right into the front side of the motor . I'm wondering if this pump can be rebuilt and how big of a job it is to get off the tractor. Any advise would be appreciated .

 

[JSanders10]

231 or 231S, I believe the power steering pumps are different.
231 is this: http://cdn3.volusion.com/95emh.zyzq9/v/vspfiles/photos/119845-2.jpg?1419234181