Shimano Tiagra Freehub FH-RS400 User's Manual

Shimano Tiagra Freehub FH-RS400 Brake manual cover
Pages 1
Year 2022
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Shimano Tiagra Freehub FH-RS400 Brake Specification

The Shimano Tiagra Freehub FH-RS400 is a component designed specifically for road cyclists seeking reliable performance and durability. This freehub is part of Shimano's Tiagra series, known for offering mid-range components that balance quality and affordability. The FH-RS400 features a high-quality aluminum alloy construction, which ensures a lightweight yet robust build, ideal for handling the stresses of road biking. It is compatible with 8, 9, and 10-speed cassettes, providing versatility to accommodate various gearing preferences and riding styles.

The freehub incorporates Shimano's advanced sealing technology, which helps protect the internal mechanism from dirt, moisture, and grit, thus enhancing longevity and reducing the need for frequent maintenance. The hub employs a cup-and-cone bearing system, a hallmark of Shimano's design, offering adjustability and smooth rotation for efficient power transfer and consistent performance. With a quick-release axle, the FH-RS400 allows for easy wheel removal and installation, facilitating straightforward maintenance and tire changes.

Designed for rim brakes, the FH-RS400 is tailored for use with traditional caliper braking systems, providing reliable stopping power. Its design ensures compatibility with standard rear hub spacing, fitting seamlessly into most road bike frames. Overall, the Shimano Tiagra Freehub FH-RS400 is an excellent choice for cyclists looking for a dependable, performance-oriented hub that delivers a balance of durability, ease of use, and compatibility with various setups in road cycling applications.

Shimano Tiagra Freehub FH-RS400 Brake F.A.Q.

How do I properly install the Shimano Tiagra Freehub FH-RS400?

To install the Shimano Tiagra Freehub FH-RS400, first ensure the wheel is clean. Attach the freehub body to the hub shell, ensuring the splines align correctly. Tighten the lockring to the manufacturer's torque specifications using a suitable torque wrench.

What should I do if the Shimano Tiagra Freehub FH-RS400 is making a clicking sound?

If the freehub is making a clicking sound, inspect the pawls and springs for damage or wear. Clean and lubricate them if necessary. Ensure the lockring is properly tightened and that the cassette is securely attached.

How often should I perform maintenance on the Shimano Tiagra Freehub FH-RS400?

It is recommended to perform maintenance on the Shimano Tiagra Freehub FH-RS400 every 3,000 to 5,000 kilometers, or more frequently if riding in wet or dusty conditions. Regular checks help ensure optimal performance.

What tools are needed for servicing the Shimano Tiagra Freehub FH-RS400?

For servicing the Shimano Tiagra Freehub FH-RS400, you will need a cassette lockring tool, a torque wrench, cone wrenches, and appropriate lubricants for reassembling.

How can I tell if the bearings in the Shimano Tiagra Freehub FH-RS400 need replacing?

Signs that bearings need replacing include roughness when spinning the wheel, excessive play, or hearing grinding noises. Inspect the bearings directly for pitting or wear during maintenance.

Can I use the Shimano Tiagra Freehub FH-RS400 with an 11-speed cassette?

Yes, the Shimano Tiagra Freehub FH-RS400 is compatible with 11-speed cassettes, as well as 9 and 10-speed systems, provided the proper spacers are used where necessary.

What type of lubricant should be used for the Shimano Tiagra Freehub FH-RS400?

Use a light, high-quality bicycle hub grease for the bearings and a suitable oil for the pawls and ratchet mechanism. Avoid using thick grease on the pawls, as it may impair engagement.

How do I adjust the hub bearings on the Shimano Tiagra Freehub FH-RS400?

To adjust the bearings, remove the wheel and loosen the locknut on one side. Adjust the cone nut until the wheel spins smoothly with minimal play, then retighten the locknut while holding the cone in place.

Why is the Shimano Tiagra Freehub FH-RS400 not engaging immediately when pedaling?

Delayed engagement can be caused by worn or sticky pawls. Remove the freehub body, clean the inside thoroughly, and apply appropriate lubrication to the pawls and ratchet mechanism.

What is the correct torque specification for the Shimano Tiagra Freehub FH-RS400 lockring?

The correct torque specification for the Shimano Tiagra Freehub FH-RS400 lockring is typically between 30-50 Nm. Always refer to Shimano's official documentation for the most accurate specifications.