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Unresolved EXTRUDER GEAR AND MOTOR GRINDING

Discussion in 'Troubleshooting' started by momoe, Sep 20, 2016.

  1. momoe

    momoe Member

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    Anyone want to take a shot? When extruding, my main gear or motor, not sure which, is making a buzzing/grinding noise. This causes the gears to reverse direction. it goes back and forth between extrude and retract. it wont just extrude. everything looks straight and I can spin by hand without binding. is the motor shot? is the main gear shot? what gives?
     
    #1 momoe, Sep 20, 2016
  2. KTMDirtFace

    KTMDirtFace Well-Known Member

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    Can you extrude by hand by turning the gear? ( when its hot )
     
    #2 KTMDirtFace, Sep 20, 2016
  3. momoe

    momoe Member

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    I sure can. I've cleared it thinking it was a jam. I feel no tension when turning by hand either
     
    #3 momoe, Sep 20, 2016
  4. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Sounds like perhaps the stepper driver is going bad for the extruder stepper.
    Cheap part so not a big deal to swap and test. Under warranty I would still get them to sort it. of course.

    If it isn't the stepper driver then it is the stepper motor itself most likely
     
    #4 mark tomlinson, Sep 20, 2016
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  5. Ocsff

    Ocsff Active Member

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    Mark is on the right track . Also check the wiring While refurbishing printers for ROBO3D I have found a few with this same issue that were loose wires at the connectors. Pull on the wires and make sure the ends are crimped on tight as well as making sure they are attached to the motor on the extruded and the ramps board
     
    #5 Ocsff, Sep 22, 2016
  6. momoe

    momoe Member

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    If the motor is bad, can I use the old z lift motors I replaced for the upgraded rods?
     
    #6 momoe, Sep 22, 2016
  7. Ocsff

    Ocsff Active Member

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    yes but you may need to lengthen the wires. All the motors are interchangeable.
     
    #7 Ocsff, Sep 22, 2016
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  8. Geof

    Geof Volunteer Moderator
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    I believe thats the same motor. @mark tomlinson can probably verify that
     
    #8 Geof, Sep 22, 2016
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  9. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yes, all of the motors in the Robo are interchangeable.
     
    #9 mark tomlinson, Sep 22, 2016
  10. 0ryanx

    0ryanx New Member

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    I had a similar issue with mine, and found out that the z-step value within the EEPROM was set too high. If the motor swap doesn't fix it, you might check the EEPROM settings.
     
    #10 0ryanx, Sep 26, 2016

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