New Bowthruster motor
We had a big issue with getting the flange loose from the driveshaft, finally we used a puller and the key was to put pressure on to the bearing and not to the driveshaft itself.
Once the flange was gone we could get the gearbox housing apart and could see why we couldn’t get the driveshaft all the way down to it’s original position.
As expected the sleeve with keyway had moved and the keys were not in place.
Hope this can help someone.
I´m attaching some pics and if someone is interested I have more.