The Shimano FC-6700 [paid link] chainring is a key component of the Shimano 105 series, designed for precise shifting performance and enhanced durability for road cyclists. Whether you are upgrading your drivetrain, replacing a worn-out part, or conducting routine maintenance, understanding how to properly install, adjust, and maintain your Shimano FC-6700 [paid link] chainring will ensure smooth and efficient rides for miles to come.
Tools Required
- 5mm Allen wrench [paid link]
- Torque wrench [paid link] (capable of 12-14Nm)
- Chainring bolts (specific to FC-6700 [paid link])
- Chain whip (for removing cassette if necessary)
- Bottom bracket tool [paid link] (for removing crankset)
- Grease or anti-seize compound
- Cleaning supplies (cloth, degreaser, brush)
- New chainring (if replacing)
- Chainring bolt tool (if necessary for installation)
Installation of the Shimano FC-6700 Chainring
Installing the Shimano FC-6700 chainring is a straightforward process, but precision is essential to ensure optimal performance and prevent any issues during use.
- Prepare the Crankset
Begin by removing the crankset from the bike if it is already installed. Use the bottom bracket tool [paid link] to remove the crankset bolts, and take off the crankset from the bottom bracket. If necessary, remove the old chainring from the crankset, noting the orientation of the chainring bolts for easy reinstallation. - Install the New Chainring
Place the new Shimano FC-6700 chainring onto the crankset. Ensure that the chainring is oriented correctly, with the correct bolt holes aligning with the crankset. The markings on the chainring should also match those on the crankset. The Shimano FC-6700 uses a four-bolt configuration, so make sure each bolt hole is correctly aligned. - Bolt the Chainring
Secure the chainring using the provided chainring bolts. Use the 5mm Allen wrench [paid link] to tighten each bolt evenly. Ensure that you follow the “star pattern” for tightening bolts: tighten one bolt slightly, then move to the opposite bolt, alternating in this manner to avoid putting too much pressure on one side of the chainring. - Torque the Bolts
Once all bolts are tightened, use a torque wrench [paid link] to ensure that each bolt is tightened to the recommended torque setting. For the Shimano FC-6700, the recommended torque is 12-14Nm. This ensures the bolts are tight enough to prevent any loosening during riding but not overtightened, which could damage the crankset. - Reinstall the Crankset
After the chainring is securely in place, reinstall the crankset onto the bike by aligning it with the bottom bracket and tightening the crankset bolts. Use a torque wrench [paid link] to tighten the bolts to the manufacturer’s specifications.
Adjusting the Shimano FC-6700 Chainring
Proper adjustment of the FC-6700 chainring ensures that it operates smoothly with the rest of your drivetrain, resulting in improved shifting performance.
- Check Chainline Alignment
The chainline is the path the chain follows when engaged with the chainring and cassette. A misaligned chainline can cause poor shifting and excessive wear. To adjust, you may need to reposition the crankset or chainring. Shimano recommends that the chainring be positioned directly in line with the cassette for optimal performance. - Test the Shifting Performance
After installation, perform a series of shifts using your bike’s front derailleur. Check if the chain moves smoothly across the chainring without skipping or dropping. If the shifting is rough or inconsistent, ensure that the front derailleur is aligned correctly and that the derailleur limit screws are adjusted properly. - Adjust the Front Derailleur
Fine-tune the front derailleur by adjusting the limit screws. The “L” screw controls the lowest gear, while the “H” screw adjusts the highest gear. Ensure that the derailleur moves freely across the entire range of the chainring without rubbing. This step is crucial for smooth shifting and preventing derailleur damage.
Maintaining the Shimano FC-6700 Chainring
Routine maintenance of the Shimano FC-6700 chainring is vital to ensure that it remains in top working condition throughout its lifespan. Regular cleaning, lubrication, and inspections can prevent premature wear and improve performance.
- Regular Cleaning
Clean the chainring regularly using a degreaser, a brush, and a cloth. Dirt, grime, and oil buildup can affect shifting performance and lead to faster wear. For best results, clean the chainring after every few rides or when you notice any debris buildup. Be sure to clean both the chainring surface and the teeth, as well as the area around the crankset. - Lubricate the Chainring
While the chainring itself does not require lubrication, it is essential to keep your chain clean and well-lubricated. Apply a high-quality chain lubricant to ensure smooth operation of the drivetrain and to reduce wear on the chainring. - Inspect for Wear
Regularly inspect the Shimano FC-6700 chainring for signs of wear, such as bent or chipped teeth. If the teeth appear excessively worn or damaged, it may be time to replace the chainring. Additionally, check the bolts and ensure they are tight and free from corrosion. - Chain Maintenance
A worn-out chain can cause excessive wear on the chainring. Replace your chain regularly to prevent damage to the chainring and other drivetrain components. Check for chain stretch and replace the chain before it becomes too worn.
Troubleshooting Common Issues with the Shimano FC-6700 Chainring
While the Shimano FC-6700 chainring is built for durability, issues can arise if not properly maintained or installed. Here are some common issues and how to troubleshoot them:
- Shifting Issues
- Problem: Poor or inconsistent shifting.
- Solution: Check for misalignment of the front derailleur and adjust the limit screws. Ensure the chainring is aligned with the cassette and check for any debris obstructing the chain’s movement.
- Chain Dropping Off the Chainring
- Problem: The chain frequently drops off the chainring during shifts.
- Solution: This could be due to the front derailleur not being properly adjusted or the chainring being worn. Ensure the derailleur is set to the correct height and angle, and check for any signs of chainring wear.
- Noisy Pedaling
- Problem: The chainring produces noise during pedaling.
- Solution: Clean and lubricate the chain and chainring. Inspect for damaged teeth on the chainring, which could be causing the noise. Replace the chainring if necessary.
Conclusion
The Shimano FC-6700 chainring offers excellent performance for cyclists looking for a durable and precise drivetrain component. By following proper installation, adjustment, and maintenance practices, you can ensure that your Shimano FC-6700 chainring continues to provide smooth and efficient shifting. Regular inspections and care will help extend the lifespan of the chainring and keep your drivetrain operating at peak performance.