At the back of the AMS there is a black connector holding one end of the PTFE tube.
The internal rubber tube of the black connector inside my AMS is split, and the filament keeps coming out inside the AMS instead of going into the PTFE tube.
Is there a way to replace this without buying a whole new AMS unit bottom?
Can I repair it safely with tape or glue?
Thiis the wiki about the AMS and ptfe replacement. With maintenance tips also.
Thanks, but it’s not the PTFE tube itself that’s worn, it’s the separate tube in the AMS that the PTFE tube is inserted into.
It’s the tube attached to the black connectors that’s part of the AMS that is split.
Ok sorry I couldn’t help you.
Edit: i didnt like my previous answer.
So i went and torn down one of my AMSs. To see what was failing on your AMS box. The rubber piece is just a seal for air tightness. The ptfe tube should go thru that rubber piece and into a plastic part inside the AMS.
If you can pull out the ptfe without much effort it is not fully seated inside the AMS.
I hope that this your problem. I can’t see any other way for it to come out of the rubber part. .
Probably not since like a bowden coupler, it’ll grab and manages the alignment of the PTFE so that it lines up with the path. I’ve never had luck replacing other split plastic guides (not AMS) by tape as it either no longer holds well or the seam never closes properly and kicks things off to the side.
Just to be clear, this is the unit that’ll need replacing (not the entire bottom)? AMS Internal Hub Unit | Bambu Lab CA
Are you sure that’s the unit that needs replacing?
The tube that is damaged is an integral part of the AMS Bottom Cover Unit.
See
The damaged tube is located at the back of the bottom cover unit, above the power
connections for the AMS filament feeders. It is the inside end of the tube that connects the AMS to the PTFE tube leading to the printer.
Did you by chance sub a ticket to Bambu Lab and get a response? I just ran into the same issue.
Did you have any luck with this issue? Can’t seem to find much info on it and ran into the same problem.
The rubber nipple thing doesn’t actually guide the filament in. The Bowden tube goes all the way through it and into the link. Mine was doing the same thing and I thought I had a hole. I searched the web and saw your post, then I found a YouTube video to replace a gear in one of the guides in the AMS but for giggles I watched him reassemble the unit and he pushed the tube through the nipple. That’s when I realized it doesn’t serve as a guide. Push your tube in further