I recently purchased some vintage 6-speed Shimano 600 downtube shifters. The package came with all the parts in a ziploc bag and it looks a bit bewildering. Any idea where I can find an installation diagram for this assembly?
Originally these levers came with three parts per side - the concave bit that goes on the downtube, the lever and the screw to hold it all together. The concave bit only goes on one way - turn them 180 degrees if it is not screwing together. And that should be it, see:
But you have them in pieces. You need these instructions:
The way they are set up is:
- Chrome concave plastic piece goes on first, concave side toward frame, Flat side faces out
- Brass washer
- Thin steal washer, 2 little protrusions toward frame, Make sure not to bracket the 2 little protrusions between the little metal tab on frame. Things won't fit or shift if you do this. The tab on the frame is a stop for the lever.
- Shift lever, Make sure the tab on the inside of the lever goes in the notch between the 2 little protrusions
- Relatively thick rubber\metal washer. Metal side faces frame
The Shimano Techdocs site has installation manuals and exploded diagrams of Shimano components. While it's possible your shifters may not be on the site, you can probably find a set that's similar enough.