How to Fix a Shimano Derailleur (Even When It Looks Like This)

If your Shimano derailleur is bent, broken, or just not shifting right—this video will walk you through exactly how to fix it. I’m working on a donated bike where the rear derailleur is completely destroyed: the cage is bent, the jockey wheels are gone, and shifting is nonexistent.

In this step-by-step tutorial, I’ll show you how to:
😎 Diagnose a broken rear derailleur
😎 Safely remove the damaged derailleur
😎 Install a new Shimano Tourney derailleur
😎 Set your limit screws
😎 Adjust cable tension for smooth shifting
😎 Test the final setup on a repair stand

Rear derailleurs get damaged all the time, usually from tip-overs, poor storage, or simple accidents. The good news? You don’t need a bike shop to fix it. Just a few tools and the confidence to wrench.

🛠 Tools & Components Used in This Video Linking to Amazon:
Shimano Tourney TY300 Rear Derailleur 👉 https://amzn.to/3INSO9k
Feedback Sports Pro Mechanic Repair Stand 👉 https://amzn.to/44QTIul
Park Tool Derailleur Hanger Alignment Gauge (DAG-2.2) 👉 https://amzn.to/453skYN
Hex Key Set (Amazon) 👉 https://amzn.to/4lJoeMA
Shifter Cable & Housing Kit 👉 https://amzn.to/3H6BCeA
Park Tool CN-10 Cable Cutters 👉 https://amzn.to/3IQFWiI
Bike Chain Tools 👉 https://amzn.to/46s188B

💬 Questions or stuck on a step? Drop a comment and I’ll help you out.

👍 If this video helped, give it a like and consider subscribing for more DIY bike repairs and budget-friendly upgrades.

#ShimanoTourney, #BikeRepair, #DerailleurFix, #DIYBikeMechanic, #MTBRepair, #BudgetBikeBuild, #RearDerailleur, #ShiftingProblems, #BikeMaintenance, #FixYourBike


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I only recommend items I actually OWN and use. The links above may provide a small advertising commission at no added cost to you.