Potential Causes Of Brake Fluid Leaks

Posted on: 27 June 2018

Brake fluid is an essential part of the brake system since it's responsible for transferring braking forces to the target wheels. Without adequate brake fluid pressure, your car's brakes won't work when you depress the pedal, or you may require a longer-than-normal braking distance. You can imagine how dangerous that would be on the road. That is why you should consider leaking brake fluid as an emergency car problem. Here are some of the common reasons brake fluids sometimes leak:

Damage in the Brake Line

The brake lines are channels that contain brake fluid; their main job is to transfer hydraulic pressure from the master cylinder to the wheel brakes when you step on the brake pedal. Brake lines are typically made from steel, rubber, or a mixture of rubber and fabric. These materials are subject to wear and tear just like other parts of the car. Serious damage can cause cracks or holes in the brake lines and allow brake fluid to leak.

Damage in the Bleeder Valves

Impurities in the brake fluid are dangerous because they interfere with the transfer of braking force. Air is a common impurity in brake lines, and it must be removed periodically to maintain brake efficiency. The removal of air from the brake lines, technically called brake bleeding, takes place through bleeder valves. Damages to these valves easily allow brake fluid to leak out of the brake system.

Damage in the Piston Seal

The brake piston is directly engaged in the braking of the car since it pushes on the brake pad and forces the pad to make contact with the disc. This is what provides the friction necessary for stopping the car. The piston is equipped with a dual-function seal; it prevents the brake fluid from leaking out and also helps in pulling back the piston when the brake is released. Therefore, damage to this seal also allows brake fluid to leak out of the brake system.

Damage in the Cylinder Reservoir

Lastly, your car may also start leaking braking fluid if the master cylinder reservoir is damaged. The master cylinder reservoir is the tank that holds brake fluid and supplies the master cylinder with enough brake fluid for its operations. Once the brake pedal is released, the fluid used in braking the car is pulled back into the master cylinder reservoir. Damage to this holding tank can occur in the form of external corrosion, accidental damage or normal wear and tear over a long time.

If you suspect your car's brake fluid is leaking, don't take too long before getting a professional diagnosis from the mechanic. Otherwise, you may find yourself without adequate braking power when you need it most. For more information, contact a local auto repair company like H & S Tire & Auto Center