What Size Tubing To Bleed Brakes?

If your brake fluid is trapped with air or moisture, your brakes will feel softer. Water absorbed by brake fluid causes brake components to corrode. In some vehicles, it is necessary to bleed the brake fluid. This article explains how.

Tip: Bleeding brakes is recommended for auto mechanics. Unless you have experience repairing cars, you may need help.

What Size Tubing To Bleed Brakes?

what size tubing to bleed brakes

Mount the Car

Make sure you follow the manufacturer’s instructions.

  • Check that your brake fluid reservoir is full when your vehicle is on a solid surface.
  • A tire iron can be used to loosen the lug nuts.
  • You can place a stand securely under your car by using the lift to lift it high enough. Put the jack under the car.
  • Remove the jack from its location and place the jack stand in its place.

Tires must be removed

  • There should be no lug nuts on your tires.
  • Tires and wheels should be carefully removed from the work area.
  • There will be an exposed calliper assembly and rotor on each brake.

Loosen the Bleeder Screw

  • It is determined by the make and model of your vehicle where and what size bleeder screw you will need. Make sure you use the correct wrench.
  • It is usually the brake that is farthest from the master cylinder that needs to be repaired first. Typically, this is the brake assembly on the rear passenger side. Any questions about bleeding should be directed to the owner’s manual.
  • Beginning with the rear passenger side, loosen the bleeder screw. 
  • You can spray penetrating oil on it if it’s too tight, then let it sit for a while.

Vinyl tubing should be used to close the opening

  • Put on your work gloves before inserting the plastic or vinyl tube into the bleeder opening.
  • A bottle or jar should be inserted at the other end. Typically, 3/16-inch by 5/16-inch is the perfect size.
  • During brake bleeding, air bubbles and fluid will be introduced into the jar through the tubing.

Activate the brake pedal and open the bleeding valve

Note: Bleeding the brakes is performed without running the engine.

  • Pump the brake pedal slowly with a partner while placing the brake pedal on the floor. Once the brake pedal is down, let your partner know.
  • For opening the bleeder valve, use a wrench.
  • The dirty fluid and air will escape from the brake line if you keep the brake pedal pressed and open the bleeder valve.
  • Before closing the bleeder valve, have your partner communicate down.
  • Following the closure of the valve, your partner can slowly let go of the brake.
  • Repeat this process until all bubbles and dirty fluid have been removed from the tubing. Before starting, make sure that the fluid in the reservoir matches the fluid that you put in.

Repeat on Each Brake

  • According to most cars, the rear brakes are used first, followed by the rear brakes of the driver, the front brakes of the passenger, and the front brakes of the driver. The procedure could be a little different depending on your owner’s manual.
  • Make sure the brake fluid level remains above the indicator line after you have bled each brake. The system will have to be refreshed if fresh air is not introduced.
  • If fluid is needed, it can be added.
  • Your partner should secure the bleeder valves as soon as you have bled all four brakes. The reservoir for the brakes should be filled completely. No fluid should be present there.
  • Reinstall the wheels and lower the car again.
  • Make sure the lug nuts are tightened to specifications using a torque wrench.

Know how to bleed your brakes to keep your car running smoothly. Car repairs are best left to those who are experienced.

Be the first to comment

Leave a Reply

Your email address will not be published.


*