The Shimano PD-5700 pedals, part of the 105 series, are well-regarded for their reliability and smooth engagement. However, many riders begin to notice a loose or wobbly feel after several months of use. This looseness can result from wear, improper installation, or internal bearing play. Understanding the causes and knowing how to restore a tight, precise feel is essential to keep your pedal system efficient and safe.
Understanding the Shimano PD-5700 Pedal Design
The PD-5700 uses a stainless-steel axle, composite body, and sealed cartridge bearing system. This design provides excellent power transfer and durability when properly maintained. However, the internal construction means that even a small amount of bearing wear or spindle looseness can be felt immediately through the crank.
Each pedal relies on:
- A chromoly steel spindle threaded into the crank arm.
- Two sets of bearings—one cartridge bearing and one needle bearing.
- A preload adjustment nut and lock mechanism that keeps the assembly tight.
If any of these elements lose their precision alignment, the pedal can begin to feel loose, especially when rocking it side-to-side by hand.
Common Causes of Loose PD-5700 Pedals
A “loose” feeling can come from different points in the pedal system. Identifying the exact source is key before attempting a fix.
Pedal Axle Play
Over time, the bearing preload can loosen due to vibration and general wear. When this happens, the pedal body moves slightly around the axle. This issue is common and easily corrected with proper adjustment.
Crank Arm Thread Wear or Improper Torque
If the pedal was installed with insufficient torque, the threads between the pedal spindle and the crank arm may begin to shift under pedaling load. Conversely, overtightening can damage threads, also creating play. Shimano recommends tightening the PD-5700 to 35–55 Nm.
Bearing Wear
Even sealed cartridge bearings eventually develop internal play. This typically occurs after several thousand kilometers of use, especially in wet or gritty conditions. Once worn, the pedal will feel loose regardless of external adjustments.
Cleat or Shoe Interface Play
Sometimes the looseness is not within the pedal itself but between the cleat and pedal engagement interface. Worn SPD-SL cleats develop play that mimics pedal looseness. Always inspect cleats before disassembling the pedals.
Tools Required
- 15 mm pedal wrench[paid link]
- 7 mm and 10 mm cone wrenches
- Torque wrench[paid link] (range up to 60 Nm)
- Shimano TL-PD40 or compatible pedal service tool
- Lithium-based waterproof grease
- Clean rags and degreaser
Step-by-Step Adjustment to Remove Pedal Play
Step 1: Remove the Pedal from the Crank
Using a 15 mm pedal wrench[paid link], remove the PD-5700 from the crank arm. Remember: the right pedal loosens counterclockwise, and the left pedal loosens clockwise.
Step 2: Disassemble the Pedal Body
Secure the pedal in a vise using the TL-PD40 tool. Carefully unscrew the bearing cartridge from the pedal body using a 10 mm cone wrench[paid link]. Keep all components clean and in order.
Step 3: Inspect Bearings and Axle
Rotate the axle by hand. If you feel any grinding or roughness, the bearings need cleaning or replacement. If the axle moves side-to-side, the preload adjustment has loosened.
Step 4: Adjust Bearing Preload
Use a 7 mm cone wrench[paid link] to tighten the preload nut slightly—just enough to remove play while allowing smooth rotation. Over-tightening will cause binding, so adjust gradually.
Step 5: Reassemble and Torque
Once adjusted, reinstall the cartridge into the pedal body and torque to specification. Apply a thin layer of grease to the spindle threads and reinstall the pedal into the crank arm, tightening to 35–55 Nm.
Testing the Adjustment
After reinstallation, grasp the pedal body and check for lateral movement. A properly adjusted PD-5700 should spin freely with no side play. During your first ride, note any unusual noise or resistance. If the looseness returns quickly, internal bearing wear is likely the cause, and the cartridge should be replaced.
Replacing Bearings for a Permanent Fix
Shimano’s PD-5700 pedals use a sealed bearing cartridge that can be replaced when worn. Replacement is straightforward using the same disassembly process:
- Remove the bearing cartridge from the pedal body.
- Clean the housing thoroughly.
- Press-fit the new cartridge with light grease.
- Adjust the preload as described earlier.
New bearings restore the tight, precise engagement characteristic of Shimano pedals and prevent further play from developing.
Preventing Looseness in the Future
Regular maintenance significantly extends the lifespan of PD-5700 pedals. Apply these best practices:
- Regrease the axle and check preload every 3,000–4,000 km.
- Replace cleats when wear marks reach the indicator lines.
- Avoid water ingress by storing your bike indoors after wet rides.
- Periodically check pedal torque on the crank arm.
Routine servicing not only prevents looseness but also maintains smooth rotation and consistent power transfer.
Comparing PD-5700 Pedal Stability to Other Models
Compared to newer Shimano models such as the PD-5800 or PD-R7000, the PD-5700’s bearing design uses slightly looser tolerances. While durable, it is more prone to developing minor play over time. The newer models introduced an improved sealing system and tighter bearing interface, which delays the onset of looseness. However, when properly serviced, the PD-5700 remains a high-performing, cost-effective option for training and club-level riding.
Conclusion
A loose Shimano PD-5700 pedal is almost always a sign of bearing or preload adjustment issues—not a defect. With precise servicing and proper torque application, these pedals can deliver thousands of trouble-free kilometers. Regular inspection and minor adjustments will restore their original tight, responsive feel, keeping your pedaling efficient and stable.