Tools:
①2mm hex wrench
②2.5mm hex wrench
A. Unload the Filament in the Extruder
When you are ready to unload the filament, make sure you have paused or completed the printing task.
1. Select the “Utilities” tab on the screen.
Figure 1 Enter the “Utilities” tab.
2. Set the temperature of the nozzle to the proper loading temperature. For example, the Raise3D PLA default loading temperature is 215℃. In this guide, we demonstrate how to perform this procedure using the left nozzle as an example. We set the left nozzle temperature to 215℃.
Figure 2 Set the temperature of the nozzle to the proper unloading temperature.
3. Select "Unload", and the printer will start heating. When the printer reaches the target temperature, select "Unload". The extruder will pre-extrude the remaining filament and start to withdraw the filament.
Figure 3 Unload the filament.
4. Press the quick connecter, and pull out the filament guide tube.
Figure 4 Press the quick connector, and pull out the filament guide tube.
5.Gently pull the filaments out of the extruder. After the filament is completely removed from the extruder, select "OK" on the screen to end the unloading.
Figure 5 Gently pull out the filament from the extruder.
B. Move the Print Head to a Position Where You Can Easily Operate It
Adjust the print head to a position where you can easily operate this procedure on it.
Note: We demonstrate how to replace a nozzle using the left extruder as an example.
1. Select the “Utilities” tab on the screen.
Figure 6 Select the “Utilities” tab on the screen.
2. Select the “Unlock” button on the upper left corner on the screen.
Figure 7 Select the “Unlock” button.
3. Push the print head carrier to move the extruder to a position suitable for operation.
Figure 8 Push the print head carrier to move the extruder to a position suitable for operation.
C. Remove the Steering Engine
1. Turn off the printer and cut off the power.
Figure 9 Turn off the printer and cut off the power.
2.Remove the extruder that needs to be replaced, we demonstrate how to perform this procedure using the left extruder as an example.
Release the red buckle, and hold the red handle on the front of the interchangeable hot end to remove it from the printer. For details, see How to Install and Disassemble Interchangeable Hot Ends V1.0
Figure 10 Release the red buckle, and remove the interchangeable hotend from the printer.
2）Remove the back cover and remove the 7 screws from it. 6 of the screws require a 2mm hex wrench to remove them and are indicated with a red circle in the image below. One of the screws requires a 2.5mm hex wrench to remove it and is indicated with the green circle in the image below.
Figure 11 Remove the back cover and remove the 7 screws from it.
Figure 12 Remove the back cover.
3）Locate the position of left extruder motor cable and pull out the left extruder motor cable by pressing on the left buckle.
Figure 13 Pull out the left extruder motor cable by pressing on the left buckle.
、4）Locate the position of the hot end connecting cable, press the small buckle above, and pull out the hot end connecting cable.
Figure 14 Locate the position of the hot end connecting cable, press the small buckle above, and pull out the hot end connecting cable.
5）Remove the 3 screws on the side of the left extruder with a 2.5mm hex wrench. The 3 screws are indicated by the red circles in the image below.
Figure 15 Remove the 3 screws on the side of the left extruder with a 2.5mm hex wrench.
6）Remove the screw and lift out the extruder.
Figure 16 Remove the screw and lift out the extruder.
7）Remove the right extruder in the same way.
Remove the screw and lift out the extruder. Pay attention to the location of the wedge block as circled below, the right extruder is on the upper position.
After removing the right extruder, you will see the bearing circled in the picture (the left extruder has no bearing). You have selected to switch the nozzle to the left nozzle on the screen, and transfer the right extruder to the upper position, that will be easy for removal and installation, and can avoid misplacement.
Figure 17 Remove the screw and lift out the right extruder.
3. Use a 2mm wrench to remove a screw on the damper of the steering engine and remove the damper.
Figure 18 Remove the damper of the steering engine.
4. Remove the two screws fastening the steering engine with a 2.5mm wrench and remove the old steering engine component.
Figure 19 Remove the old steering engine component.
5. Remove the two screws on the steering engine with a 2.5mm wrench.
Figure 20 Remove the two screws on the steering engine with a 2.5mm wrench.
D. Install the New Steering Engine
1. Put the coil spring on the 2 screws.
Figure 21 Put the coil spring on the 2 screws.
2. Use a 2.5mm wrench to screw the two screws on the new steering engine. Note that the bottom of the screws is flush with the edge of the steering engine fixing frame, and it can be slightly pulled after being installed.
Figure 22 Use a 2.5mm wrench to screw the two screws on the new steering engine, and it can be slightly pulled after being installed.
3. Turn on the printer, click "Utilities" on the screen, then click "right" on the screen, hear the "squeak" of the motor to make sure that the right extruder is in the lower position.
Figure 23 Make sure that the right extruder is in the lower position.
4. Push the wedge to the innermost position.
Figure 24 Push the wedge to the innermost position.
5. Install the new steering machine component by installing the two screws with a 2.5mm wrench.
Figure 25 Install the new steering machine component by installing the two screws with a 2.5mm wrench.
6. Plug in the steering machine cable. Install the damper of the steering machine by installing a screw on it using a 2mm wrench.
Figure 26 Install the damper of the steering machine by installing a screw on it using a 2mm wrench.
7. Install the extruder. For the right extruder, align the bearing with the slot, and securely install the extruder.
Note: pass the right extruder cable through the empty slot on the device, and the hot end connecting cable through the empty slot on the device below, that will be easy for subsequent insertion.
Figure 27 Install the extruder.
8. Install and tighten the 3 screws on the side of the right extruder using a 2.5mm hex wrench.
Figure 28 Install and tighten the 3 screws on the side of the right extruder using a 2.5mm hex wrench.
9. Install the back cover in reverse by following the removal steps.
1）Locate the position of the hot end connecting cable, press the small buckle above, and insert the hot end connecting cable.
Figure 29 Locate the position of the hot end connecting cable, press the small buckle above, and insert the hot end connecting cable.
2）Locate the position of the left extruder cable, and insert the left extruder cable by pressing on the left buckle.
Figure 30 Locate the position of the left extruder cable, and insert the left extruder cable by pressing on the left buckle.
3）Put the back cover in place and tighten the 7 screws on it. 6 of the screws require a 2mm hex wrench to replace them and are indicated with a red circle in the image below. One of the screws requires a 2.5mm hex wrench to replace it and is indicated with the green circle in the image below.
Figure 31 Put the back cover in place and tighten the 7 screws on it.
4）Install the interchangeable hotend. we demonstrate with the left interchangeable hotend. Release the red buckle, and hold the red handle on the front of the interchangeable hot end to install it on the printer. For details, see How to Install and Disassemble Interchangeable Hot Ends V1.0.
Figure 32 Release the red buckle, and hold the red handle on the front of the interchangeable hot end to install it on the printer.
E. Check If the Right Extruder Lifts Normally
Click the Utilities, switch the positions of the left and right extruder, and check if the right extruder lifts normally.
Figure 33 Click the Utilities, switch the positions of the left and right extruder, and check if the right extruder lifts normally.
F. Check If the Extruder Runs Normally
1. Find the power switch at the bottom right on the back of the printer and turn on the switch.
2. Check if the extruder operates normally by performing the steps of loading the filament.
1）Select the “Utilities” tab on the screen.
Figure 34 Select the “Utilities” tab on the screen.
2）Set the temperature of the nozzle to the proper unloading temperature. For example, the Raise3D PLA default loading temperature is 215℃. Here, we use the left nozzle as an example of how to perform this procedure. We set the left nozzle temperature to 215℃.
Note: The recommended loading temperature for other filaments is typically 5-10℃ higher than its common printing temperature.
Figure 35 Set the temperature of the nozzle to the proper unloading temperature.
3）Select the “Load” button and the printer will begin to heat. When it reaches the target temperature, select "Load".
Figure 36 Load the filament.
4）The extruder gear will start to rotate. Gently push the filament into the extruder. When the filament extrudes from the nozzle, click "OK" to complete the loading.
Figure 37 Gently push the filament into the extruder.
5）Confirm that the filament can extrude evenly, and then insert the guide tube back into place. Now the extruder runs normally, you can start printing your model.
Figure 38 The extruder runs normally, insert the guide tube back into place.
G. Make offset calibration to adjust the printer accuracy
1) Please click “Setting>Maintenance>Offset Calibration” to enter the offset calibration screen, operate as prompt on the screen to adjust the printer accuracy.
Figure 39 Operate as prompt on the screen to adjust the printer accuracy.
[15.050.CN.20220509-Pro3 Series-How to Replace the Steering Engine]
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