Cykloteket Mektips - Avsnitt 8 - Byte av växelvajer

Introduction

In this tutorial, we will guide you through the process of replacing a bicycle gear cable. This is a vital maintenance task that can enhance your bike's shifting performance. Understanding how to change the gear cable can save you time and money on repairs, and it's a skill every cyclist should have.

Step 1: Gather Required Tools and Materials

Before you start, ensure you have the following tools and materials ready:

• New gear cable
• Cable cutters
• Allen wrenches
• Screwdriver (if needed for your bike model)
• Lubricant (optional, for smoother operation)
• Clean rag

Having everything prepared will streamline the process and prevent interruptions.

Step 2: Remove the Old Gear Cable

Follow these steps to safely remove the old cable:

1. Shift to the Smallest Gear: This releases tension on the cable, making it easier to remove.
2. Locate the Cable Anchor: Find where the cable is anchored to the derailleur. This is usually a small bolt.
3. Loosen the Anchor Bolt: Use the appropriate Allen wrench to loosen (but not completely remove) the bolt. This will allow you to detach the cable.
4. Remove the Cable from the Housing: Pull the cable out of the housing from both the derailleur and the shifter.

Step 3: Prepare the New Gear Cable

Now that you’ve removed the old cable, it’s time to prepare the new one:

1. Measure the Length: Compare the new cable with the old one to ensure it’s the same length.
2. Cut the New Cable: If necessary, cut the new cable to the correct length using cable cutters.
3. Install Cable Housing (if needed): If the cable housing is worn, replace it before installing the new cable.

Step 4: Install the New Gear Cable

Follow these steps to install the new cable properly:

1. Insert the New Cable: Start by threading the new cable through the shifter and then through the cable housing.
2. Attach to the Derailleur: Pull the cable tight and insert it into the anchor bolt on the derailleur.
3. Tighten the Anchor Bolt: Secure the cable by tightening the anchor bolt. Ensure that the cable is taut but not overly tight.

Step 5: Adjust and Test the Shifting

Once the new cable is installed, it’s crucial to adjust and test it:

1. Check Shifting Mechanism: Shift through all the gears to ensure smooth transitions.
2. Make Adjustments: If shifting is not smooth, adjust the barrel adjuster on the shifter or derailleur to fine-tune the tension of the cable.
3. Lube the Cable: For optimal performance, consider applying a light lubricant to the cable, especially where it exits the housing.

Conclusion

Replacing a gear cable is a straightforward process that can significantly improve your bike's shifting efficiency. By following these steps, you can perform this maintenance task with confidence. Regularly check your cables for wear and replace them as needed to keep your bike in top condition. Happy cycling!