If it's a Delco generator, there's a small woodruff key that fits in a half-moon shaped cutout in the shaft. The pulley has a slot that fits over the key. You'll need to use a little penetrating oil on the pulley/shaft joint and do a little careful tapping with a small hammer to loosen it. Sometimes it's necessary to screw the nut on level with the end of the generator shaft thread and tap on the nut while holding onto the pulley to get it started moving. Just don't bulge the thread by hammering on it without the nut installed.
Jerry
Last edited by Hotrod Lincoln; 08/26/2009 8:59 PM.
