H;
Easy; drill a 1/4" hole in the center about 1" in and insert the metal screw from a 'slide hammer' & pull it flush again.
My Machine Shop pulled it out & tapped the hole for a pipe plug.
If It's out, leave it and use commercial SAE 30 oil & change @ 3,000 miles.
For the 'later ones' (there's 3 types) a connecting tube is needed and should be solid steel.
I was a "gutsy" guy @ age 20 but this would scare the hell out of anyone with 'good sense'. The local Fire Dept. kept photos of it posted in their #1 Station for years.
Good luck.
