Originally Posted by AndyBauer
Shop manual refers to a pin, retaining the gear to the shaft. Where is that mysterious pin??
Thanks.

you can see the pin just below the gear in this pic
http://rides.webshots.com/photo/2895236800098611668fkTCbP

https://picasaweb.google.com/gv50chevy/UntitledAlbum04#5544753611619320098
Others have posted on how to remove this distributor from the engine.

Good Luck