Use the 2.5 mm hex wrench to loosen the two bolts at the lower corners of the front
extruder fan. Remove the bolts, fan guard, fan, spacers and heat sink as one piece and
set them to the side.
5. Remove the motor assembly.
Removing the fan assembly frees the motor
assembly. Unplug the motor cable connector and
set the motor assembly aside.
6. Unplug the heater wires.
There are three wires coming out of the back of the
thermal core -- the square block covered in Kapton
tape that holds the extruder nozzle. The two white
wires are the heater wires. Follow them to the black
connector next to the active cooling fan. Unplug the connector. There is a black plastic
tab at one side of the connection that will release the connector easily.
7. Remove the bar mount.
The bar mount is attached to the
active cooling assembly with two
black bolts. Use the short end of the
2.5 mm hex wrench to loosen these.
It's difficult to get at the bolts, so once
they're loose it will probably be easier
to loosen them the rest of the way
with your fingers.
8. Snip the zip tie securing the end
of the extruder cable to the extruder
cap.
Be careful not to cut any of the wires
inside.
9. Remove the black wire wrapping from the extruder cable.
Find the seam in the black cable and unroll the wrapping. The wrapping will easily pull
off of the entire cable.
10. Flip the MakerBot Replicator 2 so that it rests on its left side and the bottom of
the machine faces you.
11. Remove the electronics bay cover.
Use the 2.5 mm hex wrench to remove the eight M3x6 bolts holding it on. Set the bolts
aside.
