My memories of lifting a ML7: (last time was 14 years ago)
The complete machine can be lifted pretty easily by two men, one at each end, BUT bear in mind that the motor REALLY unbalances it. It's one big ambition is to roll over so that the motor is underneath! So beware!
It is unwieldy, rather than too heavy.
If you have a fixed steady, you could clamp this, firmly, to the bed, near to the chuck, (Adjust position to balance, aided by positioning the Saddle and Tailstock) and sling it onto the crane from there
(MAKE SURE THAT NOTHING IS GOING TO SLIP, or Open UP!) And keep it steady to prevent it rolling over , motor down.
The suggestions for moving it (if on a stand) are good. As are the ones of bolting plates to the mounting feet, and using as sliders. If you sling from such plates, you are below the C of G, so thing will try hard to topple over!
There is a lot to be said for bolting to a pallet, or heavy timber, positioning it close to the final location, and then jacking and packing until it is high enough to slide into place, before removing the timber, and the steel plates.
Then, eventually, you will have the "joy" of taking any twist out of the bed. The ML7 bed is sufficiently flexible, that even changing the torque on a holding down nut will affect the twist. Resign yourself to many iterations before removing all twist! The raising blocks effectively allow you to do what I did with it's heavier successor. This sits on studs with a nut below and above each mounting foot. Careful adjustment will reduce the twist fairly quickly.
Then you can start to enjoy yourself!
Howard
Edit for fat fingers and typos
Edited By Howard Lewis on 31/03/2018 18:27:48