Ams won't feed filament past certain point (video attached)

Bambu Lab P Series Troubleshooting
1

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Been working on this ams’s issues for a while now, slowly starting to not push filament into the extruder all the way some of the time. Now, it wasn’t even pushing filament past the buffer tube. I disconnected the Pete form the buffer tube, and found that it won’t feed past a certain spot in the pfte tube, but will continue properly if I give it a slight tug. I’ve tried it on 3 different p1s’s so im sure its not the printers, or their buffers

p1s

ams1

ams has maybe 900 hours on it

https://youtu.be/GSuQnzl_svo

2

Have you changed the internal PTFE tubes in the AMS?
Depending what you’ve printed with 900 hours is a bit. PTFE is consumable.

3

yessir have changed them all out

4

Well if it does it on other printers then it’s either the internal hub/motor or the feeder. There’s a bracket on the hub that can come loose or break. There are prints for it on MW. 900 is too early for that but I guess it’s not unheard of.
I’d put in a ticket to see if BL will replace the hub/motor combo. I don’t think there’s any way to fix without taking apart. Both are easy fixes and for the feeder you can just order the funnel.
i think it’s the motor/hub if you’ve exhausted the main culprits.

5

thanks! really really appreciate the help!

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