

Question about Delco 10 SI rebuild.
I’ve watched several videos on how to rebuild one of these bad boys. Looks like mine is shot or at least the rectifier and regulator are but the innards are a mess and rusty so I’m going to replace everything. I found this diagram that says there should be a spacer on the rear of the rotor shaft before the needle bearing in the back. All the rebuild videos I’ve watched never had this spacer and neither does my unit. Does anyone know anything about this spacer? There is a dirty spot on the rear rotor shaft where a spacer could fit but it’s not there. Here are some pics of the spacer and the dirty spot on the rear of the shaft.