My Shimano GRX RX-600 is suddenly not shifting anymore.
The shifting lever doesn't klick anymore.
I opened it up and saw that the there's a very small lever that is floating around and not attached to the gear wheel, where it should be. On the other shifter for the front derailleur it sticks to the gear wheel and can't be moved.
When I push the small lever (red circle on image) against the gear wheel, It shifts again, but it doesnt stick in place. With the case on top of it, still not.
Does anyone have an idea?
by loerks
2 Comments
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I had this happen to my left FD GRX800 shifter. Exact same pawl flap thingy. I went down a rabbit hole and never fixed it. I gave up and used my on a 1x set up and bought a new FD one, but yours being RD, might be out of luck if you can’t warranty it. If you’re in the U.S. Colorado Cyclist has 800 on close out sale now for $200. Shifters are stupidly priced.
see a few links here:
Diagnosing: [https://www.youtube.com/watch?v=t-iCoVAvXug](https://www.youtube.com/watch?v=t-iCoVAvXug)
[https://www.reddit.com/r/bikewrench/comments/q1z7nv/grx_810_rear_shifter_no_longer_shifting_up/](https://www.reddit.com/r/bikewrench/comments/q1z7nv/grx_810_rear_shifter_no_longer_shifting_up/)
[https://www.reddit.com/r/bikewrench/comments/135hucx/shimano_grx_shifter_not_working/](https://www.reddit.com/r/bikewrench/comments/135hucx/shimano_grx_shifter_not_working/)
“[smurfftastic6](https://www.reddit.com/user/smurfftastic6/)•[1y ago](https://www.reddit.com/r/bikewrench/comments/135hucx/comment/jimg5w3/)
Had this happen to a customer a couple weeks ago. There is a small spring that broke and is causing a pawl to not release completely. Since Shimano no longer offers arts for these the only solution in my case was a replacement.”