Dumont Ra-112 19"

[Radiotronman]

I just got a Dumont RA-112 last night and I've begun working on the frozen tuner. The little bolt on tuning shaft with gears is oiled and works very smoothly. The tuner utself is very tight and will only move and inch in each direction. I've tried oiling the front of the shaft by the gears with very little improvement. What am I missing here?

[bandersen]

Have you opened up the inductuner and flushed out the old, dried grease and relubed ?

Lots of good info and photos on Phil's site: http://www.antiqueradio.org/DuMontRA-113Television.htm

[Radiotronman]

I cleaned off excess old lube and added small amounts of oil to each joint. I used q-tips with contact cleaner on the coils and they're shiny.

[M3-SRT8]

Keep cleaning and oiling. Pay attention to the gears and shafts.

Careful of oil dripping into circuitry below.

[Radiotronman]

I've been cleaning and oiling it. I can now turn it it from one end to the other, but it's still stffl enough that it will round out the knob. Thank god the knob is more nylon and not Bakelite. I guess I'll just keep at it....

[bandersen]

I suggest carefully spraying with electrical parts degreaser down in to the grease and bearings to flush out all the last traces of old grease.

[Radiotronman]

Thanks guys. After much cleaning,lubricating the tuner and working it back and forth, it's finally working smoothly. Now I've got to see if I can remember how to restring the dial...

[Radiotronman]

Forgot to show pictures of my set..

[Radiotronman]

I've finally got the dial restrung and all back together. Now to put together a parts order and begin cleaning and testing tubes.

[Phil Nelson]

Good work! Petrified grease seems to be almost universal in those continuous tuners.

Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html

[MadMan]

Nice!

Also, Hogans Heroes!