Should I be able to open the main loop of a Shimano Sora front derailleur? Servicing my bike today. My chain does NOT have a master link but I was hoping to take it off and degrease it with popping out a pin. I've taken the rear derailleur side plate off so the chain is free on that end. I thought I could open this connection on the front (Sora) derailleur: ![enter image description here]( However, looking at the back it just appears to be a rivet: ![enter image description here]( Am I missing something? Is there no way to free the chain from this FD without breaking the chain either with a master link or chain tool? Thanks.

No, you’re not missing anything. That model of derailleur doesn’t split.

Split the chain with a chain tool this time and take the opportunity to install a master link.

Buy some master link pliers also when you do. Master links are hard to break by hand.