2009-2010 Honda CRF450R – Bleeding Brake System

0
4
2009 - 2010 Honda CRF450r - Brake Bleeding

How To Bleed The Brake System On Your 2009-2010 Honda CRF450R

2009 - 2010 Honda CRF450r - Brake BleedingThe Tools You Will Need Are:

  • 8mm Wrench
  • Clear Tubing
  • Catch Pan
  • Shop Towels

The only part you will need is a bottle of fresh DOT 4 brake fluid.

Bleeding your brake system after a caliper rebuild or brake pad change is a simple procedure, but does require patience. You can bleed your brakes either manually, or with a hand-held vacuum pump. The vacuum pump is faster, but I don’t take it to the track, so we’re going to stick with the manual method.

Pre-Service Notes

  • I recommend opening the Service & Torque Specs in a new tab for easy reference.
  • If you need parts and tools, make sure to buy them here!
  • Pictures with captions are after the steps below.
  • Brake fluid will damage your pads, so keep your shop towels ready!
  • The bleeding procedure is the same on the front and rear brakes.
  • If you need any help don’t hesitate to ask!

Bleeding Your Brakes

  1. Connect your tube to the bleeder valve, and place the drain end in your catch pan.
  2. Fill the reservoir to the marked limit, but do not install the cap.
  3. The brakes are a sealed system, so installing the reservoir cap will work against the bleeding process by creating a vacuum in the reservoir.
  4. Firmly apply the brakes, and hold them.
  5. With pressure applied, open the bleeder valve.
  6. After the system pressure is released, close the bleeder valve, then release the brake.
  7. Do NOT Pump Your Brakes!
    • If you pump the brakes with the valve open, you will draw air back into the system.
  8. Repeat this process until the air bubbles have stopped, and only brake fluid can be seen in the tube.
  9. If you are replacing the fluid, repeat this process until fresh brake fluid is pumped from the caliper.
  10. Throughout the bleeding process, keep an eye on your fluid level. If you let the reservoir drain, you will introduce air from the opposite side of the brake system, and you need to start over.
Connect your tube to the bleeder valve, and place the drain end in your catch pan.
Connect your tube to the bleeder valve, and place the drain end in your catch pan.
Fill the reservoir to the marked limit, but do not install the cap.
Fill the reservoir to the marked limit, but do not install the cap.
Firmly apply the brakes, and hold them.
Firmly apply the brakes, and hold them.
With pressure applied, open the bleeder valve.
With pressure applied, open the bleeder valve.
After the system pressure is released, close the bleeder valve, then release the brake.
After the system pressure is released, close the bleeder valve, then release the brake.

Release Brakes

Repeat this process until the air bubbles have stopped, and only brake fluid can be seen in the tube.
Repeat this process until the air bubbles have stopped, and only brake fluid can be seen in the tube.

If you have any questions or anything to add, please leave them in the comments or on our FaceBook page!

Keep Your ’09-’10 CRF450r Running Right!

Fix Your Dirt Bike Logo

This site uses Akismet to reduce spam. Learn how your comment data is processed.