did you get it off?
there is one clip at the back of it, you need to get a flat head screwdriver and push it up otherwise its impossible to rotate the motor anti-clockwise to remove it
just have a feel of it, or else get a torch & look at it.
its a piece of piss once you see the clip.
mine use to rumble cause of a knackered bearing, so i just went to the scrappy and pinched one