I removed the sliding coil assembly, often called a “catacomb coil” for cleaning and service. Needed it too, 80 some years of dirt, and old grease build up make it a mess.
Removed the coil sets, used a sharpie to id the location with small dots, and threw the aluminum housings, top and buttom, in the dishwasher. Worked like a charm, the reassembled, and carefully cleaned each coil set, and wiped down the pins with Deoxit. Lubricated the shaft that it slides on, and cleaned on the old nasty hardened grease out of the gear drive on the front. Tomorrow I have to paint the white band indicating tab, and reassembly. Or, I may go after the recap work first, the old wax paper caps aren’t too bad with the catacomb coil set out. Only a total of 21, should be an afternoon’s worth of work.