The Shimano PD-6700[paid link] pedals, a popular choice among road cyclists, are known for their durability and efficient power transfer. However, like any mechanical component, they can experience issues that affect performance. Identifying and resolving these problems quickly ensures your riding experience remains smooth and efficient. In this guide, we will cover the most common problems associated with the Shimano PD-6700[paid link] pedals and provide clear solutions to keep your pedals functioning optimally.

1. Pedal Binding or Stiff Engagement

One of the most frequently reported issues with the Shimano PD-6700 pedals is stiff engagement or difficulty clipping in and out. This problem typically arises when the pedal mechanism becomes clogged with dirt, debris, or when the springs become too tight or too loose.

Solution:

• Clean the Pedals: Regular cleaning of the pedal body and mechanism is essential to prevent dirt buildup. Use a soft brush and warm, soapy water to clean the pedal body and the mechanism, making sure to remove any dirt or grit that could hinder the cleat engagement.
• Adjust Tension: The Shimano PD-6700 pedals feature adjustable spring tension. If the engagement feels too tight or too loose, use a 3mm Allen wrench[paid link] to adjust the spring tension. Tighten the tension for a firmer hold, or loosen it for easier clipping in and out.
• Lubricate the Cleats: Apply a small amount of dry lubricant to the cleat interface to help reduce friction and ensure smoother engagement.

2. Noisy Pedals

A common complaint from cyclists is the squeaky or creaky sound coming from the pedals. This noise is usually due to a lack of lubrication or an issue with the pedal bearings.

Solution:

• Clean and Lubricate the Pedals: Dirt and grime can cause friction, leading to noise. Clean the pedal thoroughly and lubricate the axle with a bike-specific grease. Be sure not to over-apply the grease, as it could attract more dirt.
• Check Pedal Bearings: Over time, the bearings in the pedal can wear out, leading to noise or rough rotation. To diagnose this, rotate the pedal manually and listen for any grinding or clicking sounds. If the bearings are the issue, the pedals may need to be disassembled, cleaned, and re-lubricated or replaced.

3. Pedals Not Spinning Smoothly

If you notice that the Shimano PD-6700 pedals are not spinning smoothly, the cause is often either a lack of lubrication or a damaged bearing.

Solution:

• Lubricate the Pedal Spindle: If the pedal is hard to spin, start by removing the pedal from the crank arm and applying lubricant to the spindle. This should restore smoothness and prevent further friction.
• Inspect the Bearings: Check the pedal’s bearings for any roughness or excessive play. If the bearings feel rough when you rotate the pedal, they may need to be replaced. Shimano pedals are designed for easy bearing service, so replacing the bearings or servicing them is a straightforward process.

4. Pedal Slippage

Occasionally, you might experience pedal slippage, where the pedal feels loose or unsteady under load. This issue can arise due to incorrect installation or wear on the pedal interface.

Solution:

• Tighten the Pedals: Ensure that the pedals are properly tightened to the crank arm. Use a 15mm pedal wrench[paid link] to tighten the pedals securely. For the left pedal, remember that it is reverse-threaded, so turn counterclockwise to tighten. For the right pedal, turn clockwise to tighten.
• Check the Cleat Condition: If the pedal feels loose despite correct installation, check the condition of your cleats. Worn or damaged cleats can cause slippage. Replace them if necessary.

5. Loose or Wobbly Pedals

Over time, the pedals on your Shimano PD-6700 may feel loose or wobbly, indicating an issue with the pedal axles or bearings.

Solution:

• Tighten the Pedal Spindle: If the pedal is loose, it could be that the spindle has come slightly undone. Remove the pedal from the crank arm and inspect the spindle for tightness. Reinstall the pedal and tighten it securely.
• Check for Bearing Damage: If the pedal wobbles after tightening, the bearings inside the pedal may be worn out. A thorough inspection and possible bearing replacement will be necessary to restore the pedal’s functionality.

6. Pedal Engagement Issues with Cleats

In some cases, the problem may not lie with the pedals themselves but with the interaction between the pedals and the cleats. Improper cleat alignment, worn-out cleats, or excessive pedal tension can make clipping in and out difficult.

Solution:

• Ensure Proper Cleat Alignment: Make sure that your cleats are properly aligned with the pedal mechanism. If your cleats are out of alignment, it can make engagement difficult or inconsistent.
• Replace Worn Cleats: Cleats wear out over time, and this wear can prevent proper engagement. If your cleats are worn down, replace them with new ones to restore optimal performance.
• Adjust Cleat Tension: If you’re having trouble clipping in or out, adjust the tension of the spring in the pedal mechanism. Loosening the tension will make it easier to engage, while tightening the tension provides a more secure connection.

7. Pedal Wobbling or Unstable

If your Shimano PD-6700 pedals feel unstable while riding, this could indicate a problem with the pedal’s attachment to the crankset or internal components.

Solution:

• Check Pedal Installation: Ensure the pedals are installed correctly. If the pedal is not properly attached to the crankset, it can cause wobbling. Tighten the pedals using a 15mm wrench to ensure they are securely in place.
• Inspect the Pedal Axle and Bearings: Wobbling can also be caused by damaged axles or bearings. If tightening the pedal does not resolve the issue, disassemble the pedal and inspect the internal parts for any damage. Replace worn components as necessary.

By understanding and addressing these common issues, you can ensure your Shimano PD-6700 pedals continue to perform at their best. Regular maintenance, including cleaning, lubrication, and bearing inspection, will help extend the lifespan of your pedals, ensuring smooth rides for many miles ahead.