So I have one of these things on my main bike, an 85 Trek 520. It's getting to be pretty whimsical, in the sense that it doesn't feel the need to stay in the gear I want it to stay in. I've tried two methods of degreasing; a pressure spray degreaser and also soaking overnight in water with dish soap. I've reoiled with tri flow, but things seem to be getting worse. The 'super plate' seems to be quite gross inside, but i've been unwilling to try taking it apart for fear that i wont be able to put it back together again. I am sentimentally attached to this device, and it looks way cooler on my bike than some modern thing would, so..
- are these things fixable?
- is there an exploded diagram somewhere?
- anybody have any advice on how to go about cleaning this thing super thoroughly and trying to restore it to 'like new' quality?
- does the fact that i can't find any examples of other people who've done the same thing and written about it online mean that i'm a hopeless nerd?
btw, it shifted very well before it stopped shifting very well.