2. Replace the extruder bearing
block
2.2 lose the 2 extruder locking bolt from
the bottom side of extruder.
2.3 Move the extruder off the extruder
plate. So you can see the 6 bearing locking
bolts.
2.4 Unscrew the 6 bolts. So you can detach
the extruder plate and the aluminum
bearing blocks.
2.1 Lose the 2 Fan locking screws. So the
Fan cable can be moved freely.
2.5 lose the 2 set screw, so the X axis can
move freely.