Rebuilding this alternator and I’ve got new bearings and the brushes have loads of life left in them, but I got an issue. When taking it apart, a funny looking stepped washer fell out and I don’t know where it goes. More precisely, I think i know where it goes but not which way around. It fell out with all the banging and bashing and tapping and drumming to get it into pieces. I think it goes on the main shaft as that’s pretty much the only place it looks to fit, right up to where the shaft reduces. It is actually a perfect fit under the bearing retaining plate apart from it stops the bearing from spinning.