Hi to quote and old mentor of mine "If a man can build a machine then men can dismantle it".
Reasonably easy to stip and clean an X2 mill be careful and lock the head at the top of it's travel.
with block of wood under the head casting to stop it crashing down.
The carefully remove the "Gubbins" by releasing the tension spring first.
Remember RTFMF and study the exploded parts diagram as to what goes where.
The head should be resting on the wood block
Remove the stop from the column and remove the clamp screw and the gib adjustment screws and the gib strip will fall out.
You can now lift the head up and off the column.
DO NOT seperate the the two castings that make up the spindle head.
Have fun with your new mill
Eric