Nextruder assembly noise - Have others encountered this?
Hello,
I have recently upgraded my MK4S to include the MMU3 (still utilizing the high-flow nozzle with the appropriate slicer profile). First two prints have been without issue, but since my last print a concerning loud noise is now coming from the Nextruder assembly (see included video for reference to the sound). Oddly enough there appears to be no impact at this time to print quality, extrusion, retraction, or jamming-related issues (new filament out of the box - PETG from Sunlu / Prusament). But, I am reluctant to ignore a sound as severe as this that may indicate an issue with the rotating assembly. I disassembled the portion of the assembly including the planetary gear set and could not find evidence of abrasion or obstruction occurring in the rotating parts. I cleaned out the parts (reapplied grease afterwards) and double-checked the assembly and torquing of screws without identifying any issue - the sound was still present. Has anyone else encountered this sound and is there a recommended place in the assembly to look next? Thank you!Video
RE:
That doesn’t sound good! Seems like you’ve already tried everything I could think of. I’d be curious to know what you figure out.
On further reflection, I remember something about a little thin flat washer that has to go somewhere in the assembly. Maybe check on that?
MK4S/MMU3
RE: Nextruder assembly noise - Have others encountered this?
Thank you for mentioning the washer on the shaft of the motor! I can confirm the washer is installed, but I will give a look more closely when I get back to investigating to see if there are any witness marks or foreign material in that area.