Thanks - unfortunately the bucket is dropped so I can't really get it to budge much on my own. I will see what I can do though. That may be an option.You can also bump the engine over with a geared transmission and a dry clutch,
by simply putting the tractor in it's highest gear and rocking the whole machine back and forth.
With a front mounted hydraulic pump your options are a bit limited.
A large pry bar to the flywheel teeth or rock the tractor.
Or you can try to rotate it by engaging the pto and turning the shaft but thats only 5 to 1 or so ratio.
Pulling the glow plugs or injectors will remove the compression so it should turn over easily.