How to Install, Adjust, and Maintain the Shimano BR-4700 Brakes

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The Shimano BR-4700 [paid link] brakes are a part of the Tiagra 4700 groupset, offering a balance of affordability and performance for road cyclists. These dual-pivot caliper brakes provide reliable stopping power and compatibility with modern road bikes. However, proper installation, adjustment, and maintenance are critical to ensure optimal braking performance and longevity.

In this guide, we’ll cover everything you need to know about the Shimano BR-4700 [paid link] brakes, from installation and adjustment to troubleshooting and maintenance.

Tools Required

Before starting, gather the following tools:

  • 5mm and 4mm hex keys [paid link]
  • Torque wrench [paid link] (for precise tightening)
  • Phillips screwdriver
  • Cable cutters
  • Rubbing alcohol and a clean cloth
  • Brake pad alignment tool (optional)

Installing Shimano BR-4700 Brakes

Correct installation ensures that the Shimano BR-4700 brakes function efficiently without misalignment or excessive wear.

1. Positioning the Brake Calipers

  • Locate the center-mount hole on the fork (front) and seat stays (rear).
  • Insert the brake caliper bolt through the hole, ensuring the caliper arms are evenly spaced on both sides of the rim.
  • Lightly tighten the mounting bolt using a 5mm hex key [paid link]—do not fully torque yet.

2. Aligning the Brake Arms

  • Squeeze the brake calipers by hand to check that they remain centered over the wheel rim.
  • If necessary, adjust the centering screw (small Phillips screw on the caliper) until both brake pads are evenly spaced.

3. Installing the Brake Cable

  • Thread the brake cable through the barrel adjuster and into the cable clamp.
  • Pull the cable taut while holding the calipers closed against the rim.
  • Secure the cable using a 5mm hex key [paid link], ensuring there is enough tension for firm braking without excessive tightness.

4. Torquing the Mounting Bolt

  • Use a torque wrench [paid link] to tighten the caliper mounting bolt to 6–8 Nm, preventing movement while ensuring correct alignment.

Adjusting Shimano BR-4700 Brakes

Proper adjustment ensures maximum braking power and prevents premature wear.

1. Brake Pad Positioning

  • Loosen the brake pad fixing bolt using a 4mm hex key.
  • Align the brake pads so that they sit flush against the rim without touching the tire.
  • Ensure the pads contact the rim evenly and simultaneously when applying the brake lever.
  • Tighten the fixing bolt securely to 5–7 Nm.

2. Cable Tension Adjustment

  • Check lever feel by squeezing the brake lever—there should be immediate braking response without excessive lever travel.
  • If the brakes feel too loose, turn the barrel adjuster counterclockwise to increase tension.
  • If they feel too tight, turn the barrel adjuster clockwise to decrease tension.

3. Brake Centering

  • If one brake pad contacts the rim before the other, use the centering screw to fine-tune alignment.
  • Turn clockwise to move the left pad closer or counterclockwise to move the right pad closer.

Maintaining Shimano BR-4700 Brakes

Routine maintenance keeps your brakes in peak condition.

1. Cleaning the Brake Pads and Rims

  • Wipe brake pads and rims with a clean cloth and rubbing alcohol to remove debris and brake dust.
  • Inspect for embedded metal shards or excessive pad wear, replacing pads if necessary.

2. Checking for Brake Pad Wear

  • Brake pads have wear indicators—if the grooves are no longer visible, replace them immediately.
  • Install new pads following the positioning steps above.

3. Lubricating the Brake Pivot Points

  • Apply a small drop of lightweight lubricant to the pivot points (avoid getting oil on the brake pads or rim).
  • Work the brakes by squeezing the lever several times to distribute the lubricant.

4. Inspecting Brake Cables

  • Check for frayed or corroded cables—replace if damaged.
  • Lubricate cable housings for smoother braking performance.

Troubleshooting Common Shimano BR-4700 Brake Issues

1. Weak Braking Power

Causes:

  • Worn brake pads
  • Improper cable tension
  • Dirty brake pads or rims

Solution:

  • Replace pads if worn
  • Adjust cable tension using the barrel adjuster
  • Clean pads and rims thoroughly

2. Brake Lever Feels Spongy

Causes:

  • Loose cable tension
  • Contaminated brake pads
  • Excessive brake arm flex

Solution:

  • Tighten the cable using the barrel adjuster
  • Clean or replace contaminated brake pads
  • Check for brake caliper damage and replace if needed

3. Brakes Make a Squealing Noise

Causes:

  • Dirty pads or rims
  • Misaligned brake pads
  • Glazed brake pads

Solution:

  • Clean pads and rims
  • Adjust pad toe-in (angle slightly inward)
  • Lightly sand brake pads to remove glazing

Conclusion

Proper installation, adjustment, and maintenance of the Shimano BR-4700 brakes will ensure reliable and powerful braking performance. By following these steps, you can prevent premature wear, avoid common issues, and keep your road bike in top condition.