Simple Green concentrate and a soft toothbrush cleaned up the Teletype really well. Stubborn oil residue came off with a fingernail or toothpick. There are several springs that probably could come loose with vigorous scrubbing so I was careful to use light pressure. I set these subcomponents in a plastic tub and sprayed and scrubbed for awhile, then rinsed and set them in the sun. There are small spots of rust sheen here and there, but ill very lightly coat surfaces with oil.
Disassembly of the subcomponents was surprisingly easy. Just a small handful of fasteners, two electrical disconnects and the typing unit and base/keyboard unit came out without a fuss. Now that it is clean and I am confident there are no exposed electrical contacts, I can reassemble and test after lubrication according to the manual – Teletype Bulletin 217B
