SHIMANO 105 ST-R7025 Hydraulic STI Shifter and Disc Brake Caliper Instruction Manual

Introducció

This manual provides essential information for the proper installation, operation, and maintenance of your SHIMANO 105 ST-R7025 Hydraulic STI Shifter and BR-R7070 Disc Brake Caliper. Please read this manual thoroughly before use to ensure safe and optimal performance of your bicycle components. Keep this manual in a safe place for future reference.

Configuració i instal·lació

Proper installation is crucial for the safety and performance of your hydraulic shifter and disc brake system. If you are unsure about any step, it is recommended to consult a professional bicycle mechanic.

1. Desembalatge i inspecció

Carefully remove all components from the packaging. Inspect for any visible damage. The package should include the ST-R7025 shifter and the BR-R7070 flat mount disc brake caliper, along with necessary hardware and hydraulic hose.

Image: SHIMANO 105 ST-R7025 Hydraulic STI Shifter. This image shows the ergonomic design of the shifter lever, which integrates both shifting and hydraulic braking functions.

Image: SHIMANO 105 BR-R7070 Flat Mount Disc Brake Caliper. This image displays the disc brake caliper with its hydraulic hose, designed for flat mount frames.

2. Shifter Installation

1. Mounting to Handlebar: Position the ST-R7025 shifter on your handlebar. Ensure it is at a comfortable angle for both braking and shifting. Tighten the clamp bolt to the manufacturer's specified torque.
2. Routing Hydraulic Hose: Route the hydraulic hose from the shifter to the brake caliper. Ensure the hose is not kinked and has sufficient slack for handlebar movement.
3. Connecting Shift Cable: Install the shift cable according to your derailleur's instructions. Ensure smooth cable routing without sharp bends.

3. Caliper Installation

1. Mounting to Frame/Fork: Attach the BR-R7070 flat mount caliper to your frame or fork using the appropriate bolts. Ensure the caliper is correctly aligned with the disc rotor.
2. Connecting Hydraulic Hose: Connect the hydraulic hose to the caliper. Ensure all connections are secure and leak-free.
3. Bleeding the Hydraulic System: The hydraulic brake system must be properly bled to remove any air bubbles. Follow SHIMANO's official bleeding procedure using genuine SHIMANO mineral oil and bleeding kit. This step is critical for brake performance and safety.

4. Ajustaments

1. Ajust d'abast: The ST-R7025 levers feature reach adjustment, allowing you to customize the distance from the handlebar to the lever. Use a small hex key to adjust the screw located on the lever body until the desired reach is achieved.
2. Brake Pad Clearance: Ensure there is no rubbing between the brake pads and the rotor when the brake is disengaged. Adjust caliper position if necessary.
3. Ajust de canvi: Fine-tune your derailleur adjustments to ensure crisp and precise shifting across all gears.

Instruccions de funcionament

The SHIMANO 105 ST-R7025 combines shifting and hydraulic braking into a single, ergonomic unit.

1. Canvi de marxes

• Upshifting (to a larger cog/chainring): Push the main lever blade inwards towards the handlebar. The lever will click, and the chain will move to a larger gear.
• Downshifting (to a smaller cog/chainring): Push the smaller lever behind the main lever blade inwards. The lever will click, and the chain will move to a smaller gear.
• The ST-R7025 offers a shorter lever throw for crisper shifting compared to previous generations.

2. Hydraulic Braking

• Engaging Brakes: Squeeze the main lever blade towards the handlebar. The hydraulic system will actuate the caliper, pressing the brake pads against the disc rotor to slow or stop the bicycle.
• Braking Power: The BR-R7070 caliper provides consistent braking performance. Apply pressure smoothly and progressively for controlled braking. Avoid sudden, hard braking, especially in wet conditions.
• The improved ergonomics of the R7025 levers allow for more comfortable braking, particularly for riders with smaller hands, as the reach is 4mm closer to the handlebar compared to standard R7020 levers.

Manteniment

Regular maintenance ensures the longevity and safe operation of your SHIMANO components.

1. Neteja

• Clean the shifter and caliper regularly with a mild soap and water solution. Avoid using high-pressure washers directly on the components, especially near seals.
• Keep disc rotors clean and free of oil or grease. Use a dedicated disc brake cleaner if necessary.

2. Brake System Checks

• Brake Pad Wear: Regularly inspect brake pads for wear. Replace pads when the friction material is worn down to the wear indicator line or if braking performance diminishes significantly. Use genuine SHIMANO Ice-Tech brake pads for optimal performance and heat dissipation.
• Fluid hidràulic: Check the hydraulic fluid level and condition periodically. If braking feels spongy or inconsistent, the system may need bleeding or a fluid change. This should be performed by a qualified mechanic.
• Mànega i connexions: Inspect hydraulic hoses for any signs of damage, kinks, or leaks. Ensure all connections are tight.

3. Shifting System Checks

• Estat del cable: Inspect shift cables for fraying or corrosion. Replace worn cables promptly.
• Lubricació: Ensure pivot points on the shifter and derailleur are clean and lightly lubricated.

Resolució de problemes

Aquesta secció tracta problemes comuns que podeu trobar.

Especificacions

• Lever Model: SHIMANO 105 ST-R7025
• Caliper Model: SHIMANO 105 BR-R7070
• Velocitat: 11-speed (rear shifter)
• Tipus de fre: Fre de disc hidràulic
• Tipus de muntatge: Flat Mount (caliper)
• Accionament: Hidràulica
• Lever Adjustability: Ajust d'abast
• Material: Aluminum (lever and caliper)
• Components inclosos: BR-R7070, ST-R7025 (Left or Right, depending on purchase)
• Pes: Approximately 1.95 pounds (combined, as per product data)
• Característiques especials: Improved ergonomics for smaller hands (4mm closer reach), Ice-Tech brake pad compatibility for better heat dissipation.

Informació de la garantia

This product is covered by a Limited Warranty. For detailed information regarding the terms, conditions, and duration of the warranty, please refer to the official SHIMANO website or contact your authorized SHIMANO dealer. Keep your proof of purchase for warranty claims.

Suport i Contacte

For further assistance, technical support, or to locate an authorized service center, please visit the official SHIMANO weblloc a bike.shimano.com or contact your local SHIMANO distributor.