1. Introduction
This manual provides detailed instructions for the installation, adjustment, operation, and maintenance of your TEKTRO R559 Dual-Pivot Caliper Brake. Please read this manual thoroughly before use to ensure safe and optimal performance of your bicycle's braking system.
2. Safety Information
WARNING:
- Improper installation or maintenance can lead to brake failure, resulting in serious injury or death. If you are unsure about any part of the installation or adjustment process, consult a professional bicycle mechanic.
- Always wear appropriate safety gear when riding a bicycle.
- Regularly inspect your brakes for wear and damage. Replace worn brake pads and damaged components immediately.
- Ensure brake levers are easily accessible and provide adequate stopping power.
- Braking performance can be affected by weather conditions (e.g., rain, snow) and road surfaces. Adjust your riding style accordingly.
3. Setup and Installation
The TEKTRO R559 is a long-arm dual-pivot caliper brake designed for bicycles requiring extended reach. It is constructed from melt-forged aluminum for durability and strength.
3.1 Component Overview
Image: Overview of the TEKTRO R559 caliper brake, highlighting the quick release (Q.R) mechanism, lock device, and brake reach measurements (55mm to 73mm).
3.2 Installation Steps
- Mounting the Brake: Insert the brake bolt through the brake bridge (rear) or fork crown (front) of your bicycle frame. Secure it with the appropriate nut and washer, ensuring the brake is centered over the wheel rim.
- Attaching the Brake Cable: Route the brake cable from your brake lever through the barrel adjuster and cable anchor bolt on the caliper. Pull the cable taut and secure it firmly with the anchor bolt.
- Adjusting Brake Pad Position: Loosen the brake pad fixing bolts. Position the brake pads so they are centered on the rim's braking surface and are parallel to the rim. Ensure they do not touch the tire or dip below the rim. Tighten the fixing bolts.
- Adjusting Brake Reach: The R559 offers a reach range of 55mm to 73mm. Ensure the brake pads make full contact with the rim within this range. Adjust the brake caliper's position if necessary to achieve proper pad alignment.
- Setting Brake Lever Tension: Use the barrel adjuster on the caliper or brake lever to fine-tune the cable tension. The brake pads should be close to the rim but not touching when the lever is released. There should be a small amount of free play in the lever before the pads engage.
- Using the Quick Release (Q.R) and Lock Device: The brake features a quick release mechanism (labeled "Q.R" in the image) to easily open the calipers for wheel removal. The "Lock Device" secures the quick release in the closed position. Ensure the lock device is engaged after closing the quick release for riding.
- Final Check: Squeeze the brake levers firmly several times to seat the cable and pads. Re-check all bolts for tightness and ensure the brake operates smoothly and effectively.
4. Operation
To operate the TEKTRO R559 brake, gently squeeze the corresponding brake lever on your handlebars. The brake pads will engage the rim, slowing or stopping the bicycle. Apply both front and rear brakes simultaneously for balanced and effective stopping. Avoid sudden, hard braking, especially with the front brake, as this can cause loss of control.
The quick release mechanism allows for easy removal and installation of the wheel. To open the calipers, disengage the lock device and flip the quick release lever. To close, reverse the process and ensure the lock device is engaged before riding.
5. Maintenance
- Regular Cleaning: Keep the brake calipers, pads, and rim braking surfaces clean from dirt, grime, and oil. Use a clean cloth and a mild degreaser if necessary.
- Brake Pad Inspection: Regularly check brake pads for wear. Replace pads when the wear indicators are no longer visible or when the pad material is significantly reduced. Worn pads reduce braking performance and can damage rims.
- Cable Inspection: Inspect brake cables and housing for fraying, kinks, or corrosion. Replace damaged cables and housing to maintain smooth brake operation.
- Pivot Points: Periodically apply a small amount of light grease to the caliper pivot points to ensure smooth movement.
- Bolt Tightness: Check all mounting and adjustment bolts regularly to ensure they are securely tightened.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Weak braking power | Worn brake pads, loose cable, contaminated rim/pads, incorrect pad alignment. | Replace pads, tighten cable, clean rim/pads, adjust pad alignment. |
| Brake squealing | Contaminated pads/rim, incorrect pad angle (toe-in), loose caliper. | Clean pads/rim, adjust pad toe-in, tighten caliper mounting bolt. |
| Brake lever feels spongy | Stretched cable, worn cable housing, insufficient cable tension. | Adjust cable tension, replace cable/housing if worn. |
| Brake pads rub rim constantly | Too much cable tension, caliper not centered, quick release not fully closed. | Loosen cable tension, center caliper, ensure quick release is closed and locked. |
7. Specifications
- Model: TEKTRO R559
- Type: Dual-Pivot Caliper Brake
- Material: Melt Forged Aluminum
- Reach: 55mm - 73mm
- Weight: Approximately 179g (per wheel)
- Package Dimensions: 14.2 x 13.4 x 7.4 cm
- Package Weight: 240 g
8. Warranty Information
TEKTRO products are manufactured to high standards. For specific warranty terms and conditions, please refer to the official TEKTRO website or contact your authorized dealer. Keep your proof of purchase for any warranty claims.
9. Customer Support
For technical assistance, spare parts, or further inquiries, please visit the official TEKTRO website or contact your local TEKTRO distributor. You can often find detailed product information, FAQs, and contact forms on the manufacturer's website.
Note: Always ensure you are using genuine TEKTRO replacement parts for optimal performance and safety.