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MMU NOT LOADING FILAMENT  

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ASPRINT
(@asprint)
Active Member
MMU NOT LOADING FILAMENT

Hi,

My MMU3 is not loading the filament. I can hear the motors turning and the idler lines up but the filament will not catch on even if the idler is tightened all the way. My MMU has worked before for the past three months and I don't know why it stopped working now! Please give me your thoughts.

 

ASPRINT

Sincerely,ASPRINTMK3S+ MMU3 Owner

Posted : 28/03/2024 10:08 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: MMU NOT LOADING FILAMENT

The idler MUST NOT be tightened all of the way

See Step 38 at this link   -  https://help.prusa3d.com/guide/6-pulley-body-assembly_328918

when loading you need to feed the filament into the MMU until it is grabbed by the pulley wheel...   sometimes there is a bit of a restriction at the MMU End of the Feed PTFE Tubes. cutting the filament end on a slope usually helps get past this. 

regards  Joan 

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 28/03/2024 11:07 pm
ASPRINT
(@asprint)
Active Member
Topic starter answered:
RE: MMU NOT LOADING FILAMENT

Hi Joan,

My idler is tightened just like in the instructions and I even adjusted it a few times but still no luck.

 

ASPRINT

Sincerely,ASPRINTMK3S+ MMU3 Owner

Posted : 29/03/2024 1:05 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: MMU NOT LOADING FILAMENT

can you manually load the filaments to the front of the MMU3  (behind thefilament cutter section, with the idler cover open?) then close the idler cover, and try a print?

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 29/03/2024 8:11 pm
Enigma
(@enigma)
Eminent Member
RE: MMU NOT LOADING FILAMENT

I am.having same issue and when loading it is a loud sound while loading...none of the filaments 1 to 5 will load with filament up to mmu3 with filament cut at a slant

Posted : 06/04/2024 12:05 pm
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