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This guide's intention is to solve problems like your filament grinding in your Creality Ender 3 Pro. This is often caused by the extruder arm applying too much pressure (or too little) to the filament. To complete this guide, you should have a replacement extruder ready for your extruder mechanism, which you can purchase online.
All the tools you need are a 2.5 mm hex key, a 8 mm wrench, and around 10-15 minutes of your time!
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Press the knob to enter the marlin LCD menu and turn it to navigate between the options.
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Navigate to Temperature > Nozzle.
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Adjust the nozzle temperature by turning the knob and confirm by pressing it.
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Wait until the current temperature (bottom) matches the target temperature (top).
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Press down on the extruder lever arm and pull out the loaded filament.
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Navigate to Temperature and press Cooldown.
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Use a 8 mm wrench or some pliers to unscrew the PTFE tube from the extruder mechanism.
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Unscrew the single M3x18 socket head screw with a 2.5 mm hex key.
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Remove the extruder arm and spring.
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Use a 2 mm hex key to remove the three remaining M3x10 socket head screws while making sure to not let the motor drop.
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Remove the plastic bracket and the motor.
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Install the replacement extruder and screw it to the motor, following all the previous steps backwards.
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Reattach the PTFE tube to the extruder and insert some filaments.
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Don't forget to recalibrate your E steps!
Don't forget to recalibrate your E steps!
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