Hello all.
I just wanted to add a little tid bit to the conversation on Hammonds. I have found through some digging of my own, that it was recommended to take a hair dryer to the tone generator to loosen up and emulsify any oils that may have gotten coagulated inside the tone generator.
THIS WORKED! I have a Hammond CV organ, (which I recently have put on the market), and I was able to get that grinding generator sound to go away after weeks and weeks of trials.
I believe the problem was that the oiling funnels themselves were gummed up, and the oil I was putting in to the funnels was not reaching the tone generator.
So try this if you are having trouble! Ttyl,