How to Install, Adjust, and Maintain the FH-6700 Hub

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The Shimano FH-6700 [paid link] rear hub is a high-performance, lightweight hub designed for road cyclists who demand precision, smooth rolling, and durability. Whether you’re installing a new FH-6700 [paid link] hub, adjusting it for optimal performance, or maintaining it for long-term use, this guide will walk you through every step with expert-level [paid link] detail.

By the end of this article, you’ll know exactly how to install, adjust, and maintain your Shimano FH-6700 [paid link] hub for maximum efficiency.

Tools Required

Before getting started, gather the following tools:

  • Cone wrenches (14mm and 15mm)
  • 5mm Allen wrench [paid link]
  • Adjustable wrench
  • Grease (Shimano-approved or high-quality bicycle grease)
  • Cleaning cloths
  • Isopropyl alcohol or degreaser
  • Torque wrench [paid link]
  • Spoke wrench (for wheel truing if needed)

Installing the FH-6700 Hub

Step 1: Preparing the Hub and Wheel

Before installation, inspect the hub for any damage, especially if it’s a used or older model. Ensure the freehub body spins freely and that the bearings feel smooth.

  1. Place the FH-6700 hub in the rear wheel’s dropouts and align it properly.
  2. Check that the axle is centered in the dropouts before tightening the quick-release skewer.

Step 2: Mounting the Cassette

If you’re installing a cassette onto the FH-6700 hub, follow these steps:

  1. Apply a light coat of grease to the freehub splines.
  2. Slide the cassette cogs onto the freehub body in the correct order.
  3. Hand-tighten the lockring and then secure it using a cassette lockring tool [paid link].
  4. Tighten the lockring to the manufacturer-specified torque (usually 30-40Nm).

Step 3: Installing the Wheel onto the Bike

  1. Place the wheel into the dropouts, ensuring the axle seats properly.
  2. Insert the quick-release skewer, ensuring the lever faces outward for easy access.
  3. Tighten the quick-release nut until snug, then close the lever to secure the wheel.

Tip: The quick-release lever should require moderate force to close but should not be overly difficult to engage.

Adjusting the FH-6700 Hub for Optimal Performance

Proper adjustment of the hub ensures smooth rolling, minimizes wear, and prevents issues like bearing play or drag.

Step 1: Checking Bearing Adjustment

  1. Hold the wheel by the axle and wiggle it side-to-side to check for bearing play.
  2. If the axle moves noticeably, the cones are too loose. If the wheel feels rough, the cones are too tight.

Step 2: Adjusting the Hub Bearings

  1. Remove the wheel and use cone wrenches to loosen the locknut on one side.
  2. Slightly adjust the cone by turning it clockwise to tighten or counterclockwise to loosen.
  3. Hold the cone in place and tighten the locknut against it.
  4. Reinstall the wheel and check for free rotation without play.

Pro Tip: The FH-6700 hub uses cup-and-cone bearings, so proper adjustment is crucial to prevent premature wear.

Maintaining the FH-6700 Hub for Longevity

Regular maintenance keeps the FH-6700 hub running smoothly and extends its lifespan.

Step 1: Cleaning and Lubricating the Bearings

  1. Remove the quick-release skewer and take off the dust caps.
  2. Use cone wrenches to loosen the locknuts and remove the axle.
  3. Take out the ball bearings and clean them with isopropyl alcohol or degreaser.
  4. Repack the bearing cups with high-quality grease and reinsert the bearings.
  5. Reassemble the hub and adjust the cones as needed..

Step 2: Checking Freehub Performance

The freehub mechanism should spin freely and engage quickly when pedaling.

  1. Rotate the cassette backward and listen for smooth clicking sounds.
  2. If the freehub is sluggish, remove it and apply a light coat of oil to the ratchet mechanism.

Common FH-6700 Hub Problems and Solutions

Issue: Hub feels rough when spinning
Solution: Clean and repack bearings with fresh grease.

Issue: Excessive play in the axle
Solution: Adjust the cone tightness to remove lateral movement.

Issue: Freehub skipping or not engaging properly
Solution: Disassemble and clean the pawl mechanism, then re-lubricate.

Issue: Noisy or creaking hub
Solution: Ensure the lockring is properly torqued, and grease all contact points.

Conclusion

Proper installation, adjustment, and maintenance of your Shimano FH-6700 hub ensure smooth riding and long-lasting performance. By keeping the bearings well-lubricated, the freehub clean, and the axle properly adjusted, you can prevent common issues and enhance your cycling experience.