Printhead Stuck in Home Position

[eric-rea 3]

I've had my UM3 for a while now and it has been continuing to pump out prints reliably for years.

 

Theres nothing wrong with the print quality, but the printhead gets stuck at the home position at the beginning of a print and requires a lot of force to dislodge it. If I dont physically move the head out of the home position at the beginning of the print, the head will bind up and throw an ER18 error. Once the printhead is free it seems to move on all axis fine. 

 

I've searched the forums but dont see anyone with the same issue. PLEASE HELP! I don't want to lose my amazing my UM3.

[Enigma_M4 119]

Hi,

the first things that come in mind are lack of lubrication or build-up of debris at one or more of the main shafts, at the home position.

Regards

[Dustin 129]

The follow repair guides come to mind..

https://support.makerbot.com/s/article/1667411043559
https://support.makerbot.com/s/article/1667411552850
https://support.makerbot.com/s/article/1667411151233

[eric-rea 3]

Thank you for the help! Turns out the bars had gathered some debris from the grease I had put on them. The head seems to be moving freely now. :)