Hopefully, the machine will be in a box and not on a stand.
If it is “bare” and on a stand, remove it so that it can moved when as low as possible.
Get help to steady / push/secure.
A pallet truck can be used to move the box within the van, so that it can be secured safely.
It may be worth taking a few pry bars and wood blocks, even a low car jack, such as a scissor jack, just in case they are needed.
A long pry bar could lift one end of the machine far enough to put a block of wood under it, before doing the same at the other end. Then you start “jack and pack” until the pallet truck will go underneath..
When you get home, with the box on the floor, weight can be reduced by dismantling the box and removing any “Extras” such 4 jaw chuck, Faceplate, Steadies, etc, even the 3 jaw off the spindle.
If you do use an engine crane, be careful how the sling is routed, so that no shafts get bent.
Do not knot slings, which should be adequate for the job, preferably 1 ton capacity.
Avoid rope like the plague, unless you are ABSOLUTELY sure of its capacity and condition.
Once the load is clear of the floor, keep it low. As long as it just clears the floor, the centre of gravity is low, and risk of toppling is minimised, but not removed, so still be very careful.
Better to be slow rather than injured or late (As in dead).
Hope that this is some help
Howard