Dremel 3D40 Manual page 3

Step 4: Nozzle Assembly Removal
a. Unscrew the nozzle assembly screw with 2mm Hex
wrench as shown in the picture below. Please ensure
that the screw once fully unscrewed, should still be left
inserted in the hole.
b. Unscrew the Torx screws that hold the fan baffle assem-
bly and pull down the assembly as shown in the picture
below.
c. Use flathead screw driver to disconnect heater wires
from extruder circuit board. Gently pull the wires out of
the green terminal block.
d. Unplug the thermocouple connector (white) from the ex-
truder circuit board as shown in picture below.
e. Push down nozzle tube and pull from bottom. (Note:
Ensure that sufficient time has been given for the nozzle
to cool). Grab the block heater as shown in the picture
to pull the nozzle assembly gently. Then, use your fin-
gers to straighten any bent wires and pull straight down
through the (encircled) cavity to remove the nozzle as-
sembly as shown below.
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