H-100 lube scheme

[indianajo]

Well, my squeak is back so I decided to tip the H100 tone generator up to see the "mythical" bearing threads. (like unicorns). Took a couple of hours to remove the tube preamp and a day of pondering to find the screws to remove the custom preset wiring rack on the low key end. (two screws are in the tab switch box underneath the screwed down wire harness. The two you can see on the back of the key enclosure take a 1/4" combination wrench to reach). I put a drop of food grade oil about ISO 32 weight on each bearing. I can see the threads running down to the mainshaft bearings, but I can't see anything running to the jackshaft bearings. All those little gear driven shafts off to the side. I put my reading glasses on and with a 7 W flourescent light right there, I still can't see anything. Are these "permanently lubricated?". They appear to be solid brass bearings, not sintered metal bronze bearings or anything modern. The squeaking was a lot slower than 1200 RPM, I think it was probably one of these jackshaft bearings.
I've got food grade penetrating oil (CRC 03086) but the squirt I put on the plastic bag evaporated in 4 days, so I don't think I will bother with that. Just letting the tone generator marianate a day on regular weight oil before reassembly and test.

[SimonB]

You might have to tip the TG up higher or put a mirror under there. There should be one thread for each pair of bearings. The thread goes round the uppper bearing then through a hole in the plate and then round the lower bearing.
See the pic here http://s722.photobucket.com/albums/w...t=DSCN0304.jpg and the other TG pics in my bucket album. Notice that the middle bin has threads but the bins either side have no threads. Might be different in yours, the pics are from a T200.
Keep looking, they must be there.
Simon.

[indianajo]

Thanks for the description and link to your picture. The TG won't go any higher without unsoldering. I have it up about 6" in the back; it's bumping the back of key enclosure in the middle. The color difference between string & brass is not enough for me to see it, especially in greenish light, But I can see the string running through the hole in between the upper & lower shafts, and I can see the bearings are wider on one side on top, and on the other side on the bottom.
If the regular oiling scheme is going to work, I'm going to have to measure out the full 4 fluid ounces some way. The second organ I bought for the undamaged case has the felt TG cover removed. I wonder maybe the "tube swapping" serviceman was spraying oil down through the TG capacitors, since removing the obstructions to tipping up are so time consuming on this model. Dangerous to tip up, too, if I don't get a good connection on all 60 pins going back together.