SRAM High-Performance 5.1 DOT Hydraulic Brake Fluid 120ml User Manual

1. Introduction

This manual provides essential information and instructions for the safe and effective use of SRAM High-Performance 5.1 DOT Hydraulic Brake Fluid. This fluid is designed for hydraulic disc brake systems on bicycles, offering superior performance and reliability. Please read this manual thoroughly before attempting any maintenance or bleeding procedures.

Safety Warnings

• DOT brake fluid is corrosive and can damage paint, plastics, and skin. Always wear appropriate personal protective equipment, including safety glasses and chemical-resistant gloves.
• Avoid contact with eyes and skin. In case of contact, rinse immediately with plenty of water and seek medical advice.
• Keep out of reach of children and pets.
• Dispose of used brake fluid and contaminated materials according to local environmental regulations. Do not mix with other fluids.
• Ensure proper ventilation when working with brake fluid.

2. Product Overview

SRAM High-Performance 5.1 DOT Hydraulic Brake Fluid is engineered to provide consistent and reliable braking performance for your bicycle's hydraulic disc brake system. Its advanced formulation ensures high boiling points and long-lasting effectiveness.

Key Features:

• Dot Hydraulic Brake Fluid: An essential component for your hydraulic braking system.
• High Boiling Point: Higher than DOT 3 and 4 fluids, ensuring more consistent performance during long descents that can often affect hydraulic discs.
• Long-Lasting: A long lifespan means less frequent fluid changes, allowing more time on the trail.
• Compatibility: DOT 5.1 brake fluid is compatible with all SRAM and Avid hydraulic disc brakes.

Figure 1: SRAM High-Performance 5.1 DOT Fluid 120ml bottle. A white plastic bottle with a red label, featuring the SRAM logo and 'HIGH-PERFORMANCE 5.1 DOT FLUID FOR HYDRAULIC DISC BRAKES 4oz (120ml)' text.

3. Specifications

4. Setup & Operating Instructions: Hydraulic Brake Bleeding

Proper bleeding of hydraulic disc brakes is crucial for optimal performance and safety. This section outlines the general procedure. For visual guidance, please refer to the embedded videos.

4.1 Essential Tools & Preparation

• SRAM High-Performance 5.1 DOT Hydraulic Brake Fluid (120ml)
• Brake bleed kit (syringes, hoses, clamps, M6 connector, bleed block)
• Hex wrenches (e.g., 4mm)
• Torx wrenches (if required for your brake model)
• Clean rags or paper towels
• Safety glasses and chemical-resistant gloves
• Bicycle repair stand (recommended)

4.2 Video Guides for Brake Bleeding

4.3 Step-by-Step Bleeding Procedure (General)

1. Prepare the Bleed Kit: Attach the flexible tube to a syringe and secure it with a plastic hose clamp. Connect the M6 connector to the end of the flexible tube. Prepare two such assemblies.
2. Position the Handlebar: Loosen the handlebar screws, rotate the handlebar to a horizontal position, and secure it firmly.
3. Open Master Cylinder Bleed Port: Open the oil port on the brake lever (master cylinder).
4. Install Master Cylinder Syringe: Install one prepared syringe assembly onto the master cylinder's oil port.
5. Remove Brake Pads: Remove the disc brake pads from the caliper.
6. Install Bleed Block: Insert a bleed block into the caliper to prevent the pistons from over-extending. Secure it with an elastic band.
7. Close Master Cylinder Clamp: Close the valve on the plastic hose clamp attached to the master cylinder syringe.
8. Open Caliper Bleed Port: Open the oil injection port on the brake caliper.
9. Install Caliper Syringe: Install the second prepared syringe assembly onto the caliper's oil injection port.
10. Open Master Cylinder Clamp (again): Open the valve on the plastic hose clamp attached to the master cylinder syringe.
11. Extract Old Fluid: Aspirate all the exhausted brake fluid from the brake line into the caliper syringe.
12. Dispose of Old Fluid: Properly dispose of the used brake fluid from the syringe.
13. Fill Master Cylinder Syringe: Open a new bottle of DOT 5.1 brake fluid. For convenience, you may remove the plastic hose clamp first. Extract 20ml of fresh brake fluid into the master cylinder syringe.
14. Reinstall Master Cylinder Clamp: Reinstall the plastic hose clamp on the master cylinder syringe.
15. Expel Air from Syringe: Hold the master cylinder syringe vertically and expel any trapped air upwards.
16. Inject New Fluid: After connecting the caliper syringe, open the plastic hose clamp on the master cylinder. Slowly press the master cylinder syringe to inject the new brake fluid.
17. Aspirate from Caliper: When the master cylinder syringe is almost empty, retract the caliper syringe slowly to draw the oil into it.
18. Repeat: Repeat the injection-extraction action 3-4 times to ensure all air is removed and fresh fluid circulates.
19. Close Master Cylinder Clamp: Close the valve on the plastic hose clamp on the master cylinder.
20. Remove Caliper Syringe: Remove the flexible tube and the connector from the caliper.
21. Install Caliper Bleed Screw: Install the bleed screw into the caliper's oil injection port and tighten it.
22. Remove Master Cylinder Syringe: Remove the oil filling tool from the master cylinder.
23. Install Master Cylinder Bleed Screw: Install the oil filling screw into the master cylinder.
24. Check Brake Feel: Repeatedly squeeze and release the brake lever. If it feels smooth, the brake fluid has been successfully injected.
25. Clean Up: Wipe off any spilled brake fluid. The brake fluid refilling process is complete.

5. Maintenance

Regular maintenance of your hydraulic brake system is essential for safety and performance. SRAM 5.1 DOT fluid has a long lifespan, but periodic checks are still recommended.

• Fluid Level Check: Periodically check the fluid level in your brake system's reservoir.
• Fluid Replacement: While DOT 5.1 has a high boiling point and long life, it is hygroscopic (absorbs moisture). It is generally recommended to replace brake fluid annually or bi-annually, depending on riding conditions and manufacturer recommendations for your specific brake model.
• Storage: Store unused brake fluid in its original, sealed container in a cool, dry place, away from direct sunlight and heat. Once opened, brake fluid can absorb moisture from the air, reducing its effectiveness over time.
• Cleanliness: Always ensure your work area and tools are clean to prevent contamination of the brake fluid.

6. Troubleshooting Common Brake Issues

If you experience issues with your hydraulic disc brakes after bleeding or during regular use, consider the following:

• Spongy Brake Lever: This is typically caused by air trapped in the hydraulic system. Re-bleed the brakes carefully, ensuring all air is expelled.
• Loss of Braking Power: Could be due to air in the system, contaminated brake pads, or worn components. Check for leaks, re-bleed, inspect pads, and ensure proper caliper alignment.
• Brake Squeal/Noise: Often caused by contaminated brake pads or rotors, improper alignment, or loose components. Clean rotors with isopropyl alcohol, replace contaminated pads, and check caliper alignment.
• Leaking Fluid: Immediately address any fluid leaks. This could indicate a damaged hose, seal, or loose connection. Do not ride the bicycle until the leak is repaired.
• Stiff Lever: May indicate a blockage in the line or a seized piston. Inspect the brake line for kinks and check caliper pistons for free movement.

If you are unsure about any repair or maintenance procedure, it is recommended to consult a professional bicycle mechanic.

7. Important Safety Information

Always prioritize safety when working with bicycle components and chemicals.

• Wear appropriate safety gear, including eye protection and chemical-resistant gloves.
• Work in a well-ventilated area.
• Keep brake fluid away from heat, sparks, and open flames.
• Clean up spills immediately with absorbent material and dispose of properly.
• Never reuse old brake fluid.
• Refer to your specific brake manufacturer's manual for detailed instructions and torque specifications.

8. Warranty & Support

As per the product information, there is no specific product warranty provided for this item.

For technical support, further assistance, or inquiries regarding SRAM products, please visit the official SRAM website or contact their customer service directly. Always refer to the specific brake system manufacturer's guidelines for compatibility and detailed service procedures.