¶ What is the extruder motor
The extruder motor is installed on the tool head and used to drive the extruder to move. It is a 36-series circular stepping motor.
¶ When to use
- The motor is burnt out and cannot operate
- The after-sales team confirmed the fault of the extruder motor through log analysis.
¶ Tools and materials required
- New extruder motor
- H2.0/H1.5 hex key
- Silicone glue
¶ Safety warning and Machine state before starting operation
Turn off the power and remove the power cord.
¶ Operational guide
¶ Step 1 - Remove the TH board assembly
Refer to the video in Replace the TH board assembly to disassemble to toolhead and remove the TH board assembly.
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¶ Step 2 - Remove the LED light cable
Remove the tool head system LED light cable.
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¶ Step 3 - Remove the bambu micro lidar
Remove 2 screws with an H1.5 hex key and remove the micro lidar assembly.
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¶ Step 4 - Remove 8 screws
Remove 8 screws with an H2.0 hex key in sequence.
¶ Step 5 - Remove the front cover assembly of the toolhead slider
Remove the front cover assembly (with the extruder) of the toolhead.
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Note: At the upper position of the copper sleeve, the back cover of the tool head slider is equipped with 4 springs, preventing it from falling off.
¶ Step 6 - Remove the extruder
Remove the 3 screws with an H2.0 hex key, and remove the extruder and the hot end.
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¶ Step 7 - Remove the extruder motor
Remove 2 screws with an H2.0 hex key and remove the extruder motor.
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¶ Step 8 - Install the extruder motor
Install the new extruder motor on the front cover of the slider, while paying attention that the motor cable should be on top, then lock in 2 screws to secure the motor.
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¶ Step 9 - Install the extruder
Install the extruder and the hot end together on the front cover of the slider, and then fix it with 3 screws.
¶ Step 10 - Install the front cover assembly of the toolhead
Before installation, confirm that the springs are in place at first and that both the copper sleeves are placed in the corresponding grooves on the back cover of the slider, and then install the front cover assembly of the slider, taking care not to press the motor cable.
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¶ Step 11- Lock screws (4+4)
Lock the screws to fix the front cover assembly of the slider. Please tighten the screws in the order of 1~8 as shown in the figure below.
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¶ Step 12 - Install the bambu micro lidar
Install the bambu micro lidar under the toolhead and fix it with 2 screws.
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¶ Step 13 - Install the LED cable
Install the system LED connecting cable.
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¶ Step 14 - Install the TH board assembly, assemble the toolhead
Refer to the video in Replace the TH board assembly to install the TH board assembly and assemble the toolhead.
¶ How to verify completion/success
- Power ON the printer.
- On the screen, click the extruder button to confirm that the motor can drive the extruder normally.
- Run a self-test and confirm that there is no error message related to the toolhead.
Otherwise, check the connections, and try it again. If still you have errors, contact the service team for solution advice.