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Prusa Research a.s.
Prusa Research a.s.

1. Begin assembly

Step 1 of 14 (Chapter 5 of 8)
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How to replace a hotend PTFE tube (MK3S+/MK3S/MK2.5S/MMU2S)

  • Difficulty

    Moderate

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Contents

Printer maintenance

Comments

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ImAlias
•
Maybe try this first - it worked for me when I couldn't reload filament after I ran out of filament during a print.  Release the M3x40 idler screw from the left side of the extruder as described in Step 4.  Open the flap on the other side and look for a bit of filament sticking out of the PTFE tube.  I was able to pull it out with minimal force using some needle nose pliers. No need to replace the PTFE tube. 
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VisualReversal
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Thanks for putting this comment here at the top. You saved me a bunch of time. 🤙
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petej
•
Brilliant tip. Thanks. Saved me unnecessary dismantling.
Similar experience, I completely removed the idler screw but then released the other screws as described so creating the gap in photo 1 of step 5, I could then see a very small piece of filament resting in the top of the ptfe tube which was preventing filament from loading, managed to remove it with a small pair of tweezers.
To be honest, careful use of a vacuum may also have got it out had i known in advance
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Claire Moffatt
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You're a life saver! I tried this first and I could see a small piece of filament sticking out of the tube and it was off centre... probably from a bad unload. I took what I could out of the top then reloaded some filament while using the needle on the other end and boom, our popped the clog without having to replace anything! Thanks so much for the tip! 
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justbql
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Here is the actual link to the tube (Dec. 21)
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StevejUK
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The link to the PTFE trimming is wrong again, it's pointing back to this page. If you are looking for it, I used https://help.prusa3d.com/en/guide/how-to-trim-ptfe-tube-original-prusa-printers_22424To Prusa support - A year ago the sane issues was reported see above for that comments. Maybe it's the same internal redirection error.
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jamesreinders
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Slight correction for your linking above: the link above (as of April 16, 2020) has somehow gotten messed up and points to this page again (but with the 22424 part of the URL tacked onto the end).The correct link for "How to trim PTFE tube" is https://help.prusa3d.com/en/guide/how-to-trim-ptfe-tube-original-prusa-i3-printers_22424 -
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Jonathan Lin
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The link to your eshop for replacement PTFE tudes still points to the old URL https://www.shop.prusa3d.com/en/3d-printer-parts/… instead of the new one https://shop.prusa3d.com/en/3d-printer-parts/……

This causes Google chrome to display the following error

Your connection is not private

Attackers might be trying to steal your information from '''www.shop.prusa3d.com''' (for example, passwords, messages, or credit cards). Learn more

NET::ERR_CERT_COMMON_NAME_INVALID
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Jakub Dolezal
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Hi Jonathan,

this was some internal redirecting error. It is fixed now. Thanks for reporting it.
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