Getting the top cover off isn't difficult. I used an engine hoist (cherry picker) to lift it off. The only thing I had trouble with was where to bolt the chains on so that I could lift in at least three places and keep things even. You might be able to make a lifting eye that would bolt into the seat mounting threads. 

One thing to keep in mind is that the hydraulic reservior pan is &quot;attached&quot; or sandwhiched between the top cover and the tub. When you lift off the top cover, chances are this will come up to and when you tip the top cover, you'll spill out the fluid. There may be a proper procedure in the IT shop manual to drain this out before removal.  I know my four digit tractors (1800 and 1650) you use the hydraulic pump within the tractor and put a line into a plug and &quot;pump&quot; it empty into a bucket. My 550 was already about empty so I just pulled it. 

It might help to remove the seat first, but pulling the cover is as simple as removing all the bolts in the perimeter and lifting it off. The lift system controls are all part of the cover so they'll come with it. You can remove the shifter before hand. Just take out the two bolts and it lifts out of the  shift rails.

The name Greenwalds sounds familiar. The big farmer was Jessup. I worked for them until I was old enough to drive and got a job that wasn't putting up hay.

Jeff