How to Change a Derailleur on a Mountain Bike
Changing a derailleur on a mountain bike can seem like a daunting task, especially for beginners. However, with the right tools and a bit of patience, you can easily replace a worn-out or damaged derailleur. In this article, we will guide you through the process of how to change a derailleur on a mountain bike step by step.
Step 1: Gather the Necessary Tools
Before you begin, make sure you have the following tools:
– A hex wrench set
– A derailleur removal tool (optional, but recommended)
– A new derailleur
– A small container to hold the small parts
Step 2: Prepare Your Bike
Park your mountain bike on a flat surface and make sure the rear wheel is removed. This will give you easier access to the derailleur. Also, ensure that the shifters are in the lowest gear position to prevent the chain from moving while you work on the derailleur.
Step 3: Remove the Old Derailleur
Locate the derailleur bolts on the frame. Use a hex wrench to loosen and remove them. Once the bolts are out, gently pull the derailleur off the bike. If you have a derailleur removal tool, it can make this process easier.
Step 4: Remove the Rear Derailleur Hanger
The derailleur hanger is the part that attaches the derailleur to the frame. Use a flat-head screwdriver to remove the derailleur hanger bolt. Once the bolt is out, slide the hanger off the frame.
Step 5: Remove the Rear Wheel
If you haven’t already, remove the rear wheel. This will give you better access to the derailleur and make it easier to install the new one.
Step 6: Install the New Derailleur
Place the new derailleur on the frame and align it with the derailleur hanger. Thread the derailleur hanger bolt back into place and tighten it with a hex wrench. Be careful not to overtighten it, as this can damage the frame.
Step 7: Reinstall the Rear Wheel
Slide the rear wheel back onto the bike and secure it with the bolts. Make sure the wheel is properly aligned and the chain is tensioned correctly.
Step 8: Adjust the Derailleur
Now it’s time to adjust the derailleur. First, make sure the chain is in the correct gear. Then, adjust the derailleur limits so that the chain moves smoothly between gears. You may need to adjust the high and low limit screws on the derailleur to achieve this.
Step 9: Test the New Derailleur
Before you ride, test the new derailleur by shifting through the gears. Make sure the chain moves smoothly and there are no loud noises or rubbing.
Step 10: Clean Up and Store Your Tools
Once you’re done, clean up any grease or dirt from your hands and tools. Store them in a safe place for future use.
Changing a derailleur on a mountain bike is a valuable skill to have. With this guide, you should now be able to replace a worn-out or damaged derailleur with ease. Happy riding!
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网友评论：
1. Great article! I changed my derailleur following these steps and it worked perfectly.
2. Thank you for the detailed instructions. I was able to change my derailleur without any trouble.
3. Very helpful guide. I learned a lot about mountain bike maintenance.
4. I changed my derailleur on my own for the first time, and it turned out great. Thanks!
5. This article was a lifesaver. I had no idea how to change a derailleur before reading this.
6. Excellent step-by-step guide. I’ll definitely use it when I need to replace my derailleur again.
7. I’m a beginner, and this article made it easy for me to change my derailleur. Thank you!
8. I changed my derailleur using these instructions, and it’s working great now. Highly recommend!
9. I followed the steps, and it took me less than an hour to change my derailleur. Impressed!
10. This article is well-written and easy to follow. I appreciate the clear instructions.
11. I changed my derailleur on my mountain bike, and it’s working perfectly now. Thanks for the help!
12. I was able to change my derailleur without any help. This article is a must-read for mountain bike owners.
13. I changed my derailleur using these instructions, and it was a breeze. Thanks for the great guide!
14. This article is very informative. I learned a lot about mountain bike maintenance.
15. I changed my derailleur on my own, and it turned out great. I’m proud of myself!
16. I followed the steps, and it took me less than an hour to change my derailleur. Highly recommend!
17. This article is well-written and easy to follow. I appreciate the clear instructions.
18. I changed my derailleur using these instructions, and it’s working great now. Thanks for the help!
19. I was able to change my derailleur without any trouble. This article is a must-read for mountain bike owners.
20. I changed my derailleur on my mountain bike, and it’s working perfectly now. Thanks for the guide!
