Installing a Shimano FC-4700 [paid link] crankset can seem like a straightforward task for experienced cyclists or mechanics. However, several common mistakes can compromise the performance, longevity, and safety of your bike. This article outlines the key installation errors that can ruin your ride, ensuring that you avoid them during your crankset installation process.
1. Incorrect Bottom Bracket Installation
The bottom bracket is a critical component that directly affects the installation of your Shimano FC-4700 [paid link] crankset. One of the most common mistakes during installation is improper bottom bracket installation, which can cause the crankset to misalign or become loose. This misalignment can lead to inefficient power transfer, creaking sounds, or even damage to the crankset over time.
How to Avoid This Mistake:
- Ensure that the bottom bracket is compatible with the Shimano FC-4700 [paid link] crankset. The FC-4700 uses the Shimano Hollowtech II system, so ensure you install the correct bottom bracket for this specific system.
- Clean the bottom bracket shell thoroughly before installation to prevent dirt or debris from interfering with the seal.
- Apply appropriate grease to the bottom bracket threads (if required by your frame) to prevent seizing and creaking. Do not over-grease, as this can attract dirt.
- Tighten the bottom bracket to the manufacturer’s specified torque setting, ensuring it is secure and free of any play.
2. Using the Wrong Crankset Bolts or Tightening to Incorrect Torque
The crankset bolts that attach the Shimano FC-4700 crankset to the bottom bracket spindle must be both the correct size and tightened to the appropriate torque specification. Using incorrect bolts or not torquing them properly can result in the crankset loosening during rides or cause damage to the threading.
How to Avoid This Mistake:
- Always use the recommended Shimano FC-4700 crankset bolts. These are designed to work with the crankset and spindle, providing the right fit and strength.
- Check the recommended torque value for the crankset bolts—usually around 12-14Nm for the FC-4700. Use a reliable torque wrench [paid link] to ensure the bolts are properly tightened without overtightening, which can damage the crankset or spindle.
- Make sure that the bolts are properly greased to prevent seizing, but be cautious not to use excessive amounts of grease.
3. Misalignment of Crankset and Chainring
One of the most overlooked mistakes during Shimano FC-4700 crankset installation is misaligning the crankset relative to the chainring. This can lead to poor chainline alignment, which negatively affects drivetrain performance. It can cause issues such as inefficient power transfer, chain drop, and excessive wear on the chain and cassette.
How to Avoid This Mistake:
- Ensure that the crankset is installed with the correct orientation, with the chainring positioned correctly relative to the bike frame.
- For double or compact chainrings, ensure that they align properly with the front derailleur. Any misalignment can cause shifting problems or cause the chain to rub against the derailleur cage.
- Before tightening the crankset bolts completely, verify the chainring alignment and make adjustments as necessary to achieve a smooth chainline.
4. Improper Use of Anti-Seize Lubricant
Anti-seize lubricant is often recommended for specific parts of the crankset installation, but applying it incorrectly can lead to problems down the road. Overusing anti-seize lubricant can result in excess grease in areas that need precise torque applications, or cause dirt and grime to collect in the system, affecting performance.
How to Avoid This Mistake:
- Use anti-seize lubricant sparingly. Apply it only to the threaded parts where metal parts make contact, such as the crankset bolts and the bottom bracket interface.
- Avoid applying anti-seize to areas like the chainring bolts or where the crank arm interfaces with the spindle, as these are designed to be torqued without any extra lubrication.
- Stick to the manufacturer’s recommended lubrication guidelines to ensure the longevity and performance of your crankset.
5. Not Properly Aligning the Left and Right Crank Arms
The Shimano FC-4700 crankset has specific alignment requirements for both the left and right crank arms. Failing to align the crank arms properly can cause the pedals to be positioned incorrectly, leading to inefficient pedaling, discomfort, or even injuries in the long run.
How to Avoid This Mistake:
- Carefully align both crank arms on the spindle before tightening the bolts. The left crank arm should sit flush with the bottom bracket spindle, and the right crank arm should be in line with the drivetrain.
- Ensure that the crank arms are oriented correctly and that there is no binding when rotating the crankset. Improper alignment can affect your pedaling efficiency and overall comfort.
6. Failing to Verify Bottom Bracket and Crankset Compatibility
Shimano FC-4700 cranksets are designed to work with the Hollowtech II bottom bracket system, but riders sometimes mistakenly install a bottom bracket that is incompatible with the crankset. Using an incompatible bottom bracket can result in poor performance, noise, or even damage to both the crankset and frame.
How to Avoid This Mistake:
- Before beginning installation, confirm that your bike frame is compatible with Shimano’s Hollowtech II bottom bracket system.
- Ensure that you are using the correct bottom bracket for your bike’s frame type, whether it’s threaded, press-fit, or another system.
7. Overlooking Pedal Thread Lubrication
When installing pedals onto the Shimano FC-4700 crankset, many riders fail to apply the right type of lubrication to the pedal threads. This can lead to the pedals seizing in the crank arms or causing creaks and noise during rides.
How to Avoid This Mistake:
- Use a light coating of grease or anti-seize lubricant on the pedal threads to prevent corrosion and ensure that the pedals are easy to remove when necessary.
- Tighten the pedals securely but do not overtighten, as this could damage the threads in the crank arm.
- Always install the pedals on the correct sides—left pedal to the left crank arm (reverse threads) and right pedal to the right crank arm.
8. Ignoring Proper Crankset Inspection After Installation
After installing the Shimano FC-4700 crankset, it is crucial to inspect the system for any signs of improper installation, such as play in the crankset, unusual noise, or lack of smooth pedaling. Ignoring these signs can lead to more severe damage or performance issues in the future.
How to Avoid This Mistake:
- After installation, check the crankset for any play or unusual movement. The crank arms should be tightly attached to the spindle with no wobbles.
- Rotate the crankset by hand and check for smooth pedaling action. If you notice any resistance, creaks, or unusual sounds, double-check the installation.
- Test the bike on a stationary stand or during a short ride to ensure everything is functioning smoothly before heading out on a longer ride.
Proper installation of the Shimano FC-4700 crankset is essential for a smooth, efficient ride. By avoiding these common mistakes, you can ensure your crankset is installed correctly, maximizing performance and minimizing the risk of damage.