I had the same problem it used to be a shield to keep grease from going down the shaft on the slip yoke. They like to break off on the alum driveshafts just break it and take it out. I think we used a sawall and or a torch on it, it's been a while I don't remember.
Originally Posted by OTRtech
I need pics of this.
In over 40 years I have never seen an intact driveshaft that you could see inside of.
Then for 40 years you have never seen a driveshaft on alot of 4x4 vehicles that have a slip yoke in them you usually should grease them too.