Shimano 105 FD-5801 Dealer's Manual

Shimano 105 FD-5801 Front Derailleur manual cover

Pages 25

Year 2018

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Shimano 105 FD-5801 Front Derailleur Specification

The Shimano 105 FD-5801 Front Derailleur is designed for road cycling enthusiasts seeking precision and reliability. This component features a lightweight and durable construction, primarily crafted from aluminum and reinforced with steel, ensuring both performance and longevity. It supports a 2x11-speed drivetrain setup, allowing for efficient and smooth gear transitions. The FD-5801 incorporates Shimano's innovative cable routing technology, which reduces friction and enhances shifting performance. It is designed with an optimized cage profile to accommodate a wide gear range and is compatible with both standard and compact cranksets. The derailleur's toggle link construction significantly improves ergonomics, resulting in lighter, more responsive shifting under load. It also features an integrated cable tension adjustment, facilitating easy and precise setup without the need for additional tools. The wide inner link increases rigidity, contributing to more stable and accurate shifting. The FD-5801 is designed to work seamlessly with Shimano's STI (Shimano Total Integration) shifters for a cohesive and efficient cycling experience. Additionally, it is equipped with a clamp band or braze-on mount, providing versatility in terms of frame compatibility. Overall, the Shimano 105 FD-5801 Front Derailleur stands out as a high-performance component tailored for cyclists who demand reliability and precision in their gear shifting, making it a preferred choice for both amateur and competitive road cyclists.

Shimano 105 FD-5801 Front Derailleur F.A.Q.

How do I properly install the Shimano 105 FD-5801 front derailleur?

To install the Shimano 105 FD-5801 front derailleur, start by mounting it onto the frame's braze-on mount. Align the derailleur cage parallel to the chain and adjust the height so it's 1-3mm above the largest chainring teeth. Secure the mounting bolt and proceed to adjust the limit screws.

What are the steps to adjust the limit screws on the FD-5801 front derailleur?

To adjust the limit screws, set the low limit screw so the inner plate of the cage is close to the chain without rubbing when on the smallest chainring. Adjust the high limit screw so the outer plate is close to the chain when on the largest chainring, again without rubbing.

How can I troubleshoot chain rub on my Shimano 105 FD-5801 derailleur?

If you experience chain rub, first ensure that the derailleur is properly aligned and the limit screws are correctly set. Check cable tension as it can affect shifting performance. Fine-tune by adjusting the barrel adjuster on the shifter to increase or decrease tension.

What maintenance is required for the Shimano 105 FD-5801 front derailleur?

Regular maintenance includes cleaning the derailleur pivot points and lubricating them to ensure smooth operation. Inspect the derailleur for any signs of wear or damage and check cable tension periodically to maintain optimal shifting performance.

How do I fix a Shimano 105 FD-5801 front derailleur that won't shift properly?

Ensure that the derailleur is correctly aligned and that the limit screws are properly set. Check and adjust cable tension using the barrel adjuster. Inspect the derailleur for any dirt or debris that might impede its movement and clean as necessary.

What is the correct cable tension for the Shimano 105 FD-5801 derailleur?

The correct cable tension is achieved when the derailleur smoothly shifts between chainrings without hesitation. Fine-tune the tension using the barrel adjuster to ensure optimal performance. Proper tension usually requires a balance where the derailleur moves freely without rubbing.

How do I adjust the height of the Shimano 105 FD-5801 front derailleur?

To adjust the height, loosen the mounting bolt and position the derailleur cage so it is 1-3mm above the teeth of the largest chainring. Ensure that the cage is parallel to the chainring before tightening the mounting bolt securely.

Why is my Shimano 105 FD-5801 front derailleur making noise?

Noise can result from improper alignment, incorrect limit screw settings, or inadequate cable tension. Check these adjustments first. Also, ensure the derailleur is clean and lubricated to prevent noise from dirt or friction.

How can I prevent chain drop with the Shimano 105 FD-5801 derailleur?

To prevent chain drop, ensure the front derailleur is correctly aligned and the limit screws are properly set. Check that the chainring is not excessively worn and that the chain is the correct length and properly tensioned.

What tools do I need to adjust the Shimano 105 FD-5801 front derailleur?

You will need a 5mm hex key to adjust the mounting bolt, a screwdriver for the limit screws, and a set of pliers or a cable puller to adjust the cable tension. A torque wrench may also be helpful for precise adjustments.