Stator replacement with hall sensors and board. This product fits for 68 mm version of BBSHD (bottom bracket size 68-75 mm).
You need to change the core if you have hall sensor error or your motor was overheating too much or shorted.
unmount the controller
remove the silicone
and all the rubber sealings
open the screws of the stator side and replace it. Replace also the gaskets, if they are damaged
Clean the old silicone, insert the rubber seals or replace them.