My ender 3 V2 stock was squeaking on retracts. I am upgrading to a hemera and on dissasembling the stock extruder I noticed this part was cracked. Printer only few months old.
Printer too noisy: what to do - YouTube
Solved: How do I clean the print rollers to stop the squeaking noise... - HP Support Community - 7358237
Squeaking Noise Coming from the Left Side of the Multipurpose Feeder on a Lexmark T65x or X65x Series Printer | Lexmark T654