While working on my non-functioning Onan generator I came across an interesting find. First of all, the check of the slip-ring resistance showed it to be way above the max spec (22 ohms I think). This is measuring at the plug. I cleaned the slip-rings with Scotchbrite and that brought the resistance down to 21-22 ohms. The value would vary some as I rotated the rotor. I decided to pull the brush block. The brushes had some residue on them. I'm assuming some was from running over the...
