I have the 48v motor out of my sons 2015 20 lite. But I cannot find a way of removing the drive side bearing. I can't get a puller on it due to restricted access. See photo. 
 
	The bearing is totally shot, the back wheel of the bike can hardly turn. I figure replacing a £4 bearing has to beat a £360 motor! 
 
	I look forward to any help you can give.