<![CDATA[SoliForum - 3D Printing Community — ISSUE: A knocking/thumping sound is coming from the extruder stepper.]]> 2015-02-27T14:12:58Z PunBB https://www.soliforum.com/topic/10183/issue-a-knockingthumping-sound-is-coming-from-the-extruder-stepper/ <![CDATA[Re: ISSUE: A knocking/thumping sound is coming from the extruder stepper.]]> The Solidoodle website has a how-to on this.

http://support.solidoodle.com/hc/en-us/ … Drive-Gear

Hope this helps.

]]> https://www.soliforum.com/user/2942/ 2015-02-27T14:12:58Z https://www.soliforum.com/post/87455/#p87455 <![CDATA[ISSUE: A knocking/thumping sound is coming from the extruder stepper.]]> I know this is in the Stickied thread, but I don't understand how to fix it.

ISSUE:  A knocking/thumping sound is coming from the extruder stepper. 
CAUSE:  This is because the grub/set screw on the hobbed gear can be loose.
FIX: Check that it is aligned with the flat part of the shaft & tighten it with a 1.5mm wrench.  If you move the wires on the left (where the probe is) you can access it through the heat sink fins.  If it is missing, Solidoodle confirmed that it is an m3 x 3 set screw.

Does someone have a picture of what I must tighten? I can't find this screw.

-Zach

]]> https://www.soliforum.com/user/9792/ 2015-02-27T05:29:57Z https://www.soliforum.com/post/87431/#p87431