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13.
To reassemble the extruder, pull the filament out of
the nozzle while the extruder is hot.
14.
Reattach the filament driver. (the side with the set
screw should be closest to the motor)
Align the flat on the extruder motor with the set
screw on the filament driver.
You may need to use
the front EXT disable switch to allow manually
moving the drive wheel, and then rotate the driver so
the set screw is at an easy to access position
15.
Now reattach the idler wheel.
16.
Reattach the cooling fan and shroud.
The fan tilts in around the extruder heat sink.
Do not allow the wires to be pinched on the side of
the shroud when reassembling.