Robo E4 - Replacing the Filament Tube or Runout Detection Sensor

This video walks you through replacing both the filament tube and the filament runout detection sensor and can also be used to clear out clogs that occur in the tube system. Expect this process to take about 15 minutes.

You'll need the following:

• Scraper
• Needle-nose pliers
• Phillips-head Screwdriver
• Allen wrenches (2 & 2.5mm)
• Wire Cutters

After this video was recorded, another option for the filament runout detection sensor has been included with newer models which includes a spring as well as a pin. If you have that version, see the below graphics for information on reassembling the filament runout detection sensor:

• Collect the side of the detection housing with the circuit board and place the pin into the hole as show

• Then, place the spring over the pin. Ensure that the straight arm is down towards the housing, and sits in the channel between the circuit board and the screw hole.

• Place the paddle onto the pin as shown. Verify the orientation matches the picture. Rotate the paddle towards the circuit board. The spring hook will catch on the indention in the hook of the paddle and provide a little resistance. Continue rotating the paddle while providing slight downward pressure to keep the paddle underneath the black component on the circuit board. Once rotated far enough, the paddle should lightly click into place and should stay in position until the housing can be reattached.