Zwatt53,
To The Forums.
You probably have a better chance for responders, if You post this question on The Classic Toy trains site. This site here is mostly N & HO scale Modelers.
Here is an O scale site dealing with Your Transformer, maybe You could also read and get some info that may be useful to You. Just click on link:
http://ogrforum.ogaugerr.com/topic/lionel-type-r-110w-transformer
Good Luck!
Frank
BTW: You can get to that site at the bottom of this page in the black area next to Kalmbach Publishing, the other sites will be in White lettering....just click on Classic Toy Trains.
I have a Lionel Type R 110W transformer which has a broken potentiometer. Any suggestions where I can purchase replacement parts ?????