Avoid These Costly Shimano FC-5700 Crankset Mistakes That Can Wreck Your Drivetrain

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The Shimano FC-5700 [paid link] crankset is a durable and performance-oriented component designed for road cycling enthusiasts. However, like all bike parts, improper installation or maintenance can lead to costly mistakes, which might compromise the performance of your drivetrain. In this guide, we’ll explore the most common errors cyclists make when working with the Shimano FC-5700 [paid link] crankset and how to avoid them. Whether you’re installing the crankset for the first time or performing regular maintenance, understanding these pitfalls can save you time, money, and frustration.

1. Incorrect Crankset Installation

The installation of the Shimano FC-5700 [paid link] crankset seems straightforward, but there are a few key steps where mistakes can easily happen. These errors can cause the crankset to perform poorly or, in extreme cases, result in premature wear on the drivetrain.

Key Mistakes:

  • Improper Tightening of Crank Arm Bolts: One of the most common mistakes when installing the Shimano FC-5700 crankset is over-tightening or under-tightening the crank arm bolts. Tightening these bolts too much can cause damage to the threads, leading to instability. Conversely, under-tightening can result in a loose crankset, leading to slippage and eventual damage to the interface. Solution: Use a torque wrench [paid link] to tighten the crank arm bolts to the recommended torque specification (usually 12-14Nm for the FC-5700). This ensures optimal security without risking damage.
  • Failing to Use Proper Tools: Using incorrect tools, such as a generic crank puller or improper bottom bracket tool [paid link], can damage the crankset interface or the bottom bracket, leading to costly repairs. Solution: Always use the specific tools recommended by Shimano for the FC-5700 crankset installation. This ensures that the installation is precise and doesn’t damage any sensitive components.

2. Overlooking Bottom Bracket Compatibility

Another common mistake is neglecting to check the compatibility between the Shimano FC-5700 crankset and the bottom bracket. The FC-5700 is designed for use with Shimano’s Hollowtech II system, which requires a specific bottom bracket type. Using the wrong bottom bracket can lead to alignment issues and poor performance.

Key Mistakes:

  • Incorrect Bottom Bracket Installation: Installing an incompatible bottom bracket or failing to properly install the bottom bracket can lead to creaking, poor pedaling efficiency, and premature wear on both the crankset and the bottom bracket. Solution: Ensure you are using a Shimano Hollowtech II compatible bottom bracket, such as the Shimano SM-BB71-41B. This will ensure proper fitment and alignment with the FC-5700 crankset.

3. Misaligning the Crankset

The alignment of the crankset is crucial for efficient power transfer and smooth pedaling. Misalignment can cause the drivetrain to feel sluggish or inefficient. It can also lead to increased wear on the chainrings, bottom bracket, and pedals.

Key Mistakes:

  • Not Checking the Crankset’s Chainline: The Shimano FC-5700 crankset features a 110mm BCD, and it’s important to ensure the chainrings are aligned with the chainline. An incorrect chainline can cause issues with shifting performance, reduce power transfer, and increase drivetrain wear. Solution: Double-check the crankset’s chainline during installation, making sure the chainrings are properly aligned with the chain’s natural path. This ensures smoother shifting and better power transfer.

4. Not Lubing the Crankset Interface

Another costly mistake is neglecting to lubricate the crankset interface during installation. Without proper lubrication, the interface between the crank arms and the bottom bracket spindle can develop creaks or become difficult to remove during future maintenance.

Key Mistakes:

  • Dry Crankset Interface: Failing to apply anti-seize compound or grease to the crankset interface can cause rust or corrosion, especially if you’re in a humid environment. This makes future disassembly difficult and can lead to premature wear. Solution: Apply a light layer of grease or anti-seize compound to the crankset spindle during installation. This will help prevent rust, ease future maintenance, and ensure the crankset operates smoothly.

5. Ignoring Regular Crankset Maintenance

Proper maintenance is key to extending the lifespan and maintaining the performance of your Shimano FC-5700 crankset. A common mistake is neglecting regular checks and maintenance, which can lead to preventable issues like chainring wear, loose bolts, or creaky cranks.

Key Mistakes:

  • Not Checking Bolts Regularly: Over time, the bolts that secure the crankset may loosen due to regular use. If you don’t periodically check and tighten these bolts, the crankset may become unstable, leading to further damage. Solution: Regularly check the crank arm bolts, especially after long rides or races. Use a torque wrench [paid link] to ensure they are tightened to the correct specification.
  • Skipping Chainring Inspection: The chainrings on the Shimano FC-5700 crankset can wear out over time, particularly if you don’t regularly clean and inspect them for damage. Worn chainrings can cause inefficient power transfer and poor shifting. Solution: Inspect the chainrings for wear every few months or after intense riding sessions. Clean them thoroughly after each ride to remove dirt, grime, and debris that can accelerate wear.

6. Improper Crankset Removal

When removing the Shimano FC-5700 crankset, it’s essential to do so with the correct tools and techniques. Improper removal can damage the crankset or the bottom bracket.

Key Mistakes:

  • Forcing Crankset Removal: Some cyclists attempt to remove the crankset without using the proper tools, which can cause damage to both the crankset and bottom bracket spindle. Solution: Always use the correct crankset removal tool to safely remove the crankset. For the Shimano FC-5700, use a Shimano-compatible crank puller and apply appropriate force to avoid damaging any components.

7. Misunderstanding Crankset Wear

Lastly, failing to recognize when your Shimano FC-5700 crankset is starting to show signs of wear can lead to severe performance issues. Riding with worn components can make the drivetrain inefficient, leading to more expensive repairs down the line.

Key Mistakes:

  • Ignoring Wear Signs: Worn chainrings, loose crank arm bolts, or visible damage to the crankset interface are all signs that your Shimano FC-5700 crankset may need attention. Riding with worn components can cause more damage to your drivetrain. Solution: Pay attention to signs of wear, such as irregular shifting, visible damage to the chainrings, or strange noises while pedaling. Replace or service your crankset components as needed to maintain optimal performance.

Conclusion

The Shimano FC-5700 crankset is a high-quality, reliable choice for road cyclists, but its performance depends on proper installation, maintenance, and care. By avoiding the mistakes mentioned above—incorrect installation, compatibility issues, poor maintenance, and ignoring wear signs—you can ensure that your crankset operates smoothly for many miles. Follow the tips outlined in this guide to maximize the lifespan and performance of your Shimano FC-5700 crankset while keeping your drivetrain in peak condition.