The other day, I was riding up a hill and crack, something happened to my front derailleur. The chain rings now wobble back and forth on the horizontal axis as I pedal.
I decided to take a look and took off the dustcaps and 14mm bolts. I now see the following on both sides.
It says shimano on the chain stays but can't see a marking on the front chainset. Does anyone know what I need to do next to remove? I don't have a crank extractor but happy to purchase if I knew the right one.
I'm guessing the roller in this broke. e.g.
Do I need a new chainset or is possible to buy the complicated looking roller thingy? How would I even find out what I need (eurotrek bike but model unknown).