Thanks for the info. Now that I have it all apart and cleaned up I can see the small pin. The ½” lug was so chewed up by rust and probably more than a few arm replacements I did not see the pin before.

I got it apart by splitting a few ¼” flat washers and placing them between the chrome retaining nut and the lug. I then gingerly backed off the nut and it pushed the lug and its brass insert off of the 1/8” splined shaft.


1941 Chevy Master 3/4-Ton
In the Gallery
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Born to fish, the truck is only a hobby.