Saturday, 10 September 2016

Hydraulic Brake Bleeding Process



A hydraulic brake is a system of brake mechanism which makes the use of pressurised fluid in order to transmit brake pedal force to the wheel brakes. 

Components of a brake
  • Brake pedal
  • Master cylinder
  • Wheel cylinder (brake pistons)
  • Brake shoe
  • Hose for brake bleeding
  • Jar for brake oil bleeding


Basics of working of hydraulic brake:

Apply brakes first by stepping on brake pedal. It creates pressure in the oil in the master cylinder. The pressured oil enters wheel cylinder. This pressure moves the brake pistons which in turn move the brake shoes and the brake gets applied.

Brake bleeding:

The most important component in the process of brake bleeding is the bleeding valve. The bleeding valve consists of the bleeding nipple. A pipe is connected to the nipple which is dipped in the jar with brake fluid.

hydraulic brakes bleeding
Hydraulic Brakes Bleeding Process


Process:

If you have a brake bleeder machine, then you can perform the process all by yourself. But if you don’t, then two people are required to carry out the process.
Raise the car to a certain height using a jack. Be sure that the car is stable at this height by giving it a light push.

Remove the wheels, take the cover off the master cylinder.

A good amount of brake fluid should be available in the master cylinder. Now from inside the car, the brake pedals are pushed, but at this time, the brake valve is closed. A pressure gets created inside the wheel cylinder. Now the bleed valve is opened slowly. The air escapes out and the brake oil flows in the jar. Now the bleed valve is closed and the brake pedal is released.

Lower your car, and test the brakes.

Bleeding the brakes by yourself can be hectic and time consuming. The process can be messy and dangerous sometimes. So it is better to leave this process to a professional.






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