The X Axis assembly is attached to the X/Z trolleys with 4 M4 cap screws and T nuts.

Unplug the X End Stop then the X Motor (this can be done before or after X Axis removal depending on your access)

Remove the assembly by loosening the cap screws from the back of the machine. The T nuts just need to align parallel to the slot.

Hold on to the X Axis assembly with one hand. If not, it will fall onto the bed.

Be sure the X Motor is unplugged