Most vehicles use a hydraulic braking system. Incompressible brake fluid is used to transmit the braking force. Pressing the brake pedal creates pressure in the hydraulic system, which is transmitted through the brake fluid through the lines and hoses to the braking unit.
The correctness of the vehicle brakes depends on the correctness of the hydraulic system. This system must always be ready to transmit the brake order to the end braking units.
The hydraulic braking system requires periodic inspection and maintenance of the elements. When a malfunction is suspected, it is immediately checked, detected, and rectified. During the service, it is necessary to adhere to the manufacturer’s recommendations for a given vehicle in the knowledge of operating procedures and proper use of equipment and tools.
The brake fluid is controlled and changed by applying the procedure of use and storage. Failure to do so may result in damage to the hydraulic braking system and a safety hazard. Read more
Testing brake fluid with a multimeter
Testing of brake fluid for the presence of moisture can be measured with a multimeter. The maximum permissible moisture content in the brake fluid is 3%. Read more
Brake fluid boiling point test
The test examines the boiling point to avoid evaporation of brake fluid in critical parts of the brake system during braking. Read more
Testing brake fluid with a refractometer
Testing brake fluid with a refractometer is a procedure for determining the moisture content. Water in the brake system reduces braking efficiency. Read more
Bleeding is the removal of air in the brakes so that only the brake fluid remains. The simplest is manual bleeding the brakes. Read more
Replacement and bleeding of the brake fluid can be done under pressure. A hand pump with a tank is used for that. Read more
Extraction of air and old brake fluid from the brakes can be done without an assistant by the vacuum bleeding using a vacuum pump. Read more
Checking and adjusting the travel of the brake pedal is crucial for proper braking. Three different pedal positions to be checked: height, free play, and reserve height. Read more
Testing the master cylinder comes down to visually inspecting the leak and maintaining the brake pressure. Read more
Bench bleeding a master cylinder
After removal, repair, or replacement of the main brake cylinder performs bleeding a brake master cylinder on the workbench. Read more
Adjusting master cylinder pushrod length
Adjusting the pushrod length of the vacuum brake booster is the process of adjusting the movement of the piston in the master brake cylinder. Read more
Checking the vacuum brake booster
Checking the servo device is performed in two parts: checking the free play of the pedal and testing the correctness of the vacuum brake booster. Read more
Checking vacuum supply to the power booster
The power brake booster must have the right amount of vacuum to work properly. With insufficient vacuum, the driver must step up the pressure force on the foot pedal. Read more
Checking vacuum leaks from the power booster
When the engine provides the necessary vacuum and the brake pedal is still hard, the vacuum leak from the power booster is checked. Read more
Testing the vacuum check valve
When there is an internal vacuum leak from the power booster, one of the possible causes is a malfunction of the vacuum check valve. Read more
Inspecting brake lines and hoses
All vehicle manufacturers recommend inspecting the condition of the brake lines and hoses. Regular inspection can prevent brake system failures. Read more
See also
Video recommendation
