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Changes to Step #16

Edit by Michael Hackney

Edit approved by Michael Hackney

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[title] Install Drive Gear
[* red] Install the ''drive gear'' on the ''stepper motor'' shaft with the set screw closest to the motor as shown in the photo.
[* red] Align the end of the ''drive gear'' with the end of the shaft.
[* red] Align the set screw with the flat on the ''stepper motor'' shaft and tighten the set screw with a 1.5mm Allen wrench.
[* red] Rotate the ''drive gear'' (it will be hard to turn but it willturn) to align the ''stepper motor'' as shown in the second photo. You want the set screw aligned with the ''extruder body'' slot and the ''stepper motor's'' mounting flanges on the ''stepper motor'' aligned withso that the wire harness comingcomes out the top (the photo in the next step shows this more clearly).
[* red] Rotate the ''drive gear'' (it will be hard to turn but it willturn) to align the ''stepper motor'' as shown in the second photo. You want the set screw aligned with the ''extruder body'' slot and the ''stepper motor's'' mounting flanges on the ''stepper motor'' aligned withso that the wire harness comingcomes out the top (the photo in the next step shows this more clearly).
[* red] Insert the ''drive gear'' and ''stepper'' assembly into the ''extruder body''. This is a tight fit and may require wiggling and some force. Don't push the gear and stepper all the way in, stop when the groove in the ''drive gear'' aligns with the filament guide in the ''extruder body'' as shown with the red arrow.
[* red] Loosen the set screw on the drive gear at least two complete turns. You need to loosen it enough that it won't interfere with the round part of the stepper shaft.
[* red] Insert a 1.5mm Allen wrench into the filament guide as shown in the third photo. This will help you align the ''drive gear'' groove and keep it in place while you install the ''stepper motor'' in the next step.