How to Change Brake Fluid Harley Davidson: Essential Steps for Safety and Performance

Have you noticed your Harley’s brakes feeling a bit spongy? It might be time to change the brake fluid. Regular maintenance not only keeps your ride safe but also enhances its performance.

Key Takeaways

• Regularly changing the brake fluid in your Harley Davidson enhances safety and performance by preventing moisture buildup and ensuring optimal braking response.
• Different types of brake fluid (DOT 3, DOT 4, DOT 5) have varying properties; consult your owner’s manual to select the appropriate type for your model.
• Essential tools for changing brake fluid include a brake bleeder kit, proper wrenches, safety gear, and the correct brake fluid type.
• Follow a step-by-step process that involves draining the old fluid, refilling with new fluid, and bleeding the brakes to prevent air bubbles in the system.
• Avoid common mistakes like using incorrect fluid types and neglecting regular brake system checkups, as these can compromise brake reliability and safety.

Overview of Brake Fluid

Brake fluid plays a vital role in your Harley Davidson’s braking system. Regular maintenance, including changing brake fluid, enhances both safety and performance.

Importance of Regular Brake Fluid Change

Regularly changing your brake fluid prevents moisture buildup and ensures optimal braking performance. Moisture in the fluid can lead to corrosion within the braking system, which impacts reliability. A spongy feeling in the brake lever indicates the potential need for a fluid change. Replacing the fluid every two years or as specified in your owner’s manual helps maintain consistent brake response.

Types of Brake Fluid for Harley Davidson

Harley Davidson motorcycles typically use DOT 3, DOT 4, or DOT 5 brake fluid. Each type has specific properties:

• DOT 3: Glycol-based, affordable, absorbs moisture. Ideal for most riders.
• DOT 4: Higher boiling point than DOT 3, also glycol-based. Suitable for performance-focused motorcycles.
• DOT 5: Silicone-based, doesn’t absorb moisture. Best for specific models and environments but often not recommended for everyday use.

Check the owner’s manual for fluid specifications and do not mix different types to avoid complications.

Tools and Materials Needed

Gathering the right tools and materials is crucial for effectively changing brake fluid on your Harley Davidson. Ensure you have everything prepared before starting the process.

Essential Tools for the Task

• Brake fluid: Choose the correct type based on your model—DOT 3, DOT 4, or DOT 5.
• Brake bleeder kit: A kit simplifies the bleeding process, preventing air from entering the system.
• Wrenches: You’ll need the appropriate size for loosening brake bleeder screws.
• Screwdriver: Use a flathead or Phillips, depending on the screws in your brake system.
• Rags or cloths: Keep these handy for cleaning up spills and wiping down surfaces.
• Safety goggles: Protect your eyes from any brake fluid splashes.
• Gloves: Wear latex or nitrile gloves to avoid skin contact with brake fluid.
• Container: A small container captures old brake fluid during the draining process.

• Mobil 1: Known for high performance and reliability in various riding conditions.
• Castrol: Offers formulations designed to withstand high temps and moisture.
• Maxima: Provides synthetic options that deliver excellent protection against corrosion.
• Prestone: Trusted brand, available in multiple types suited for different Harley models.
• Brembo: Offers specialized fluids that maintain optimum braking performance.

Using quality tools and materials ensures the brake fluid change goes smoothly. This preparation enhances the safety and reliability of your braking system.

Step-by-Step Guide to Changing Brake Fluid

Follow these steps to change the brake fluid on your Harley Davidson, ensuring optimal performance and safety.

Preparing Your Harley Davidson

1. Gather Tools and Materials: Collect necessary items like a brake bleeder kit, fresh brake fluid, wrenches, screwdrivers, safety gear, and containers for old fluid.
2. Safety First: Wear safety glasses and gloves. This protects against spills that can damage paint or harm skin.
3. Position Your Bike: Ensure your Harley is on a level surface. Use a bike stand if needed to stabilize it.

Draining the Old Brake Fluid

1. Locate the Brake Reservoir: Access the brake fluid reservoir near the handlebars for the front brake and near the rear wheel for the rear brake.
2. Remove the Cap: Carefully open the reservoir cap. Avoid introducing contaminants.
3. Drain the Old Fluid: Use a brake bleeder kit to siphon out the old fluid. Alternatively, you can open the bleeder valve on the caliper to let fluid flow out.
4. Inspect for Contaminants: Look for discoloration or debris in the old fluid. This indicates moisture presence and system corrosion.

Refilling with New Brake Fluid

1. Choose the Right Brake Fluid: Refer to your owner’s manual for the correct type (DOT 3, DOT 4, or DOT 5) and brand.
2. Fill the Reservoir: Pour new brake fluid into the reservoir up to the “MAX” line. Avoid overfilling.
3. Replace the Cap: Securely close the reservoir cap to prevent contamination.

1. Start with the Bleeder Valve: Locate the bleeder valve on the brake caliper. It typically has a rubber cap.
2. Attach the Bleeder Kit: Connect the tube from your brake bleeder kit to the bleeder valve.
3. Open the Valve: Using the wrench, gently turn the bleeder valve counterclockwise to allow fluid to flow through the tube.
4. Pump the Brake Lever: While an assistant does this, you should watch for bubbles in the fluid. Pump until a steady stream of fluid appears without bubbles.
5. Close the Valve: Once the bubbles disappear, tighten the bleeder valve and remove the tube.
6. Repeat for All Brakes: Follow these steps for both front and rear brakes, ensuring each is free of air bubbles.

By following this step-by-step guide, you maintain your Harley Davidson’s braking efficiency and safety, ensuring a smoother riding experience.

Common Mistakes to Avoid

Changing brake fluid for your Harley Davidson is crucial, but it’s easy to make mistakes. Below are common errors to watch for during the process.

Using Incorrect Fluid Types

Using incorrect brake fluid types can lead to serious issues. Each Harley model specifies a particular fluid type, typically DOT 4 or DOT 5. Mixing fluids can cause chemical reactions, leading to brake system failure. Always check your owner’s manual to confirm the right fluid. Use only the recommended brand, ensuring it meets your motorcycle’s specifications. If you’re unsure, consult your dealer or a certified mechanic.

Ignoring Brake System Checkups

Ignoring brake system checkups can be detrimental to your safety. Before and after changing brake fluid, inspect the entire braking system. Look for signs of leaks, worn lines, or damaged components. Delaying these checkups can lead to costly repairs or compromised safety. Regular maintenance, including checking brake pads and fluid levels, enhances reliability. Follow your maintenance schedule, and don’t hesitate to seek professional assistance if you notice any irregularities.

Conclusion

Taking the time to change your brake fluid can make a world of difference in your riding experience. By staying on top of this crucial maintenance task you’re not just ensuring your safety but also enhancing your bike’s performance. Remember to stick to the recommended intervals and always use the correct type of fluid.

When in doubt don’t hesitate to consult your owner’s manual or reach out to a professional. Your Harley deserves the best care possible and with these simple steps you can keep it running smoothly for many rides to come. Happy riding!

Frequently Asked Questions

Why is regular maintenance important for Harley motorcycles?

Regular maintenance ensures your Harley functions safely and efficiently, improving performance and extending the bike’s lifespan. It helps identify issues early, preventing more severe problems down the line.

How often should I change the brake fluid on my Harley?

It’s recommended to change your brake fluid every two years or as specified in your owner’s manual. This helps prevent moisture buildup, which can lead to corrosion and brake failure.

What are the risks of moisture in brake fluid?

Moisture in brake fluid can cause corrosion within the braking system, reducing reliability and performance. It can lead to brake failure, making it crucial to maintain clean, moisture-free fluid.

Can I mix different types of brake fluid?

No, mixing different types of brake fluid can cause chemical reactions that may damage the braking system. Always use the type specified in your owner’s manual.

What tools do I need to change my Harley’s brake fluid?

You’ll need basic tools like a socket set, a brake bleeder kit, a container for old fluid, and fresh brake fluid compatible with your motorcycle. Always follow safety measures.

What common mistakes should I avoid when changing brake fluid?

Avoid using incorrect fluid types, skipping brake inspections, and neglecting to bleed the brakes properly. Always follow the owner’s manual and consult a professional if unsure.