A worn or stretched shift cable can cause slow front shifting, inconsistent derailleur movement, and chain rub issues. The Shimano FD-4700 [paid link] front derailleur relies on precise cable tension to function properly, and over time, the shift cable may wear out or lose tension, leading to poor performance.
Replacing the cable is a simple but essential maintenance task that will restore smooth and reliable shifting. This guide will walk you through the step-by-step process of replacing the front derailleur cable on your Shimano FD-4700 [paid link].
For a full derailleur maintenance guide, check:
Shimano FD-4700 Maintenance Plan: How to Keep Your Set-Up Perfect for Years
1. Signs That Your Front Derailleur Cable Needs to Be Replaced
If you experience any of the following issues, your Shimano FD-4700 [paid link] shift cable may need replacement:
- Slow or delayed shifting when moving to the large chainring.
- Shifter feels loose or unresponsive when changing gears.
- Cable fraying or rusting, causing inconsistent shifting.
- Shifting requires extra force at the lever.
Ignoring a worn cable can lead to poor shifting performance and possible failure mid-ride, so regularly inspect the cable for wear.
2. Tools and Parts Needed for Shimano FD-4700 Cable Replacement
Before starting, gather these tools:
- New Shimano shift cable (recommended: stainless steel or coated cables)
- Cable housing cutter (to cut the cable cleanly)
- 5 mm Allen key (for cable clamp bolt)
- 2 mm Allen key (for fine adjustments)
- Phillips screwdriver #2 (for limit screw adjustments)
- Torque wrench [paid link] (for proper tightening)
- Cable end cap (to prevent fraying)
- Bike-specific lubricant (for smooth cable movement)
If your derailleur is also due for lubrication, see:
The Best Lubrication and Cleaning Routine for Your Shimano FD-4700
3. Removing the Old Shift Cable
Step 1: Shift to the Smallest Chainring
Before removing the old cable, shift to the smallest chainring to release tension.
Step 2: Loosen the Cable Clamp Bolt
Use a 5 mm Allen key to loosen the cable fixing bolt on the derailleur.
Step 3: Remove the Cable from the Shifter
- Shift into the lowest gear and locate the cable entry point in the shifter.
- Pull the cable out gently but firmly to avoid damaging the housing.
Step 4: Inspect the Cable Housing
- If the housing is cracked or worn, replace it along with the cable.
- If the housing is clean and intact, proceed with installing the new cable.
4. Installing the New Shift Cable
Step 1: Insert the New Cable into the Shifter
- Insert the new cable through the designated port in the shifter.
- Feed it through until it exits near the bottom bracket cable guide.
Step 2: Guide the Cable Through the Derailleur
- Route the cable through the front derailleur’s cable clamp.
- Ensure the cable sits correctly in the groove without twisting.
Step 3: Lightly Tighten the Cable Fixing Bolt
- Pull the cable snug but not overtight.
- Use a 5 mm Allen key to tighten the cable clamp just enough to hold the cable in place.
For cable tension adjustments, check:
Shimano FD-4700 Set-Up Quality: Why It Feels Off and How to Fix It
5. Adjusting Cable Tension for Smooth Shifting
Step 1: Use the Barrel Adjuster to Fine-Tune Tension
- If shifting feels slow or hesitant, turn the barrel adjuster counterclockwise to increase tension.
- If shifting is too aggressive or over-shifting, turn it clockwise to reduce tension.
Step 2: Check Shifting in Both Chainrings
- Shift between the small and large chainring while pedaling.
- Listen for chain rub and make fine adjustments as needed.
For troubleshooting shifting issues, visit:
Troubleshooting Shimano FD-4700: How to Fix Common Set-Up Issues
6. Adjusting the Limit Screws After Cable Replacement
Since cable tension may have changed, recheck the derailleur’s limit screws to ensure proper alignment.
| Limit Screw | Function | Adjustment |
|---|---|---|
| Low Limit (L) | Controls shifting to the smallest chainring | Ensure the chain is 0–0.5 mm from the derailleur cage |
| High Limit (H) | Controls shifting to the largest chainring | Ensure the chain is 0–0.5 mm from the outer derailleur plate |
For detailed adjustment steps, visit:
Shimano FD-4700 Limit Screw Adjustments: How to Get Them Just Right
7. Securing the Cable and Final Checks
Step 1: Trim Excess Cable and Install an End Cap
- Use a cable cutter to trim the excess cable, leaving 1–2 cm past the clamp bolt.
- Crimp a cable end cap to prevent fraying.
Step 2: Torque the Cable Clamp Bolt
- Use a torque wrench [paid link] to tighten the cable clamp bolt to 6–7 Nm.
Step 3: Test Shifting Under Load
- Pedal and shift between chainrings while riding to ensure proper function.
- If shifting feels inconsistent, fine-tune the barrel adjuster.
For tips on keeping shifting smooth, visit:
Shimano FD-4700 Maintenance Plan: How to Keep Your Set-Up Perfect for Years
8. Preventing Future Cable Wear
To extend the life of your shift cable, follow these maintenance tips:
| Maintenance Task | Frequency |
|---|---|
| Wipe down the derailleur and cables | After every ride |
| Lubricate the derailleur pivots | Monthly |
| Check and adjust cable tension | Every two months |
| Replace worn or frayed cables | Every six months |
| Fully clean and reapply lubrication | Every three months |
By regularly inspecting and maintaining your cables, you will prevent shifting delays and excessive wear, keeping your Shimano FD-4700 in peak condition.
Conclusion
Replacing the shift cable on your Shimano FD-4700 is a simple but essential task that restores smooth, precise front shifting. By following these steps, you can ensure your derailleur performs flawlessly for months to come.
If shifting problems persist, check for limit screw misalignment, derailleur height issues, or worn cable housing.
Would you like additional guidance on Shimano FD-4700 compatibility and upgrades? Let us know in the comments!