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7

The little riveted points you mention are pivots, there are a bunch of them. What you can do is spray a little lubricant in each pivoting part of the derailleur, then physically move it side to side by hand a number of times and it should loosen up. Pull it towards you and then push it back, 10, 20, 30 times. It might take a bit of force to start with and ...


0

It can be dirty, but it can be inside the cable and not on the derailleur itself. See solution here: Shimano Deore front derailleur occasionally sticking It can also be the L-screw, or the derailleur position, or even both. Check the L-SCREW ADJUSTMENT section of the ParkTool webpage. https://www.parktool.com/blog/repair-help/front-derailleur-adjustment


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