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Brake master cylinder function and structure. General information and well-known manufacturers
The main brake cylinder is an integral part of the hydraulic brake system of a motor vehicle. Its task is to convert the force which is created by the pressure on the brake pedal into hydraulic brake power. The force from the pedal is transferred via a pressure piston to a piston, which moves towards the brake line and transmits the pressure to the brake fluid in the pipe. In the initial position, brake fluid can run through a fill hole in the pressure chamber from the refillable reservoir. During braking, the hole is closed by the piston and builds the pressure in the brake cable. With the help of a spring, when releasing the brake pedal the pressure piston will retract back to the starting position. A car is equipped with a tandem master cylinder, which creates hydraulic pressure simultaneously by two separate pressure pistons arranged one after another in the two independent brake circuits. The main brake cylinder is located in the engine compartment of the vehicle. Well-known manufacturers of main brake cylinders are ATE, BOSCH, FTE, LPR, BREMBO, DELPHI and KAGER.
When should you change the defective brake master cylinder?
The main brake cylinder should work reliably for the lifetime of the vehicle; it is made of wear-resistant and corrosion-resistant materials, mainly made of metal. The refillable reservoir is made of plastic. Despite regular maintenance, including refilling and regular replacement of brake fluid, a replacement of the main brake cylinder may be necessary due to the intense stress.
Inspecting and maintaining the brake master cylinder
General lessening of braking power can always be an indication of a defective brake master cylinder. If the brake master cylinder is working perfectly, a sufficiently strong brake pressure can always be achieved without having to press hard the pedal. Also, a quick press and release of the brake pedal (pumps) should increase the braking pressure. Often you only need to bleed the braking system or the main brake cylinder if the braking performance is bad.
Changing the main brake cylinder on your own
If you have enough professional knowledge you can replace the main brake cylinder yourself. To change the main brake cylinder the peripheral components must be first removed and then the main brake cylinder is taken out of the body. Exact instructions can be found in the technical literature or on the Internet. A new brake master cylinder from well-known brand manufacturers is inexpensive and available for a wide variety of car brands in our online shop. You can have this and many other spare parts delivered quickly and easily to your home.