Master Cylinders Parts For Saab 9 3. This device controls slave cylinders located at the other end of the hydraulic system. If your brake fluid becomes tainted, the rubber seals on the master cylinder have broken and the fluid cannot effectively hold pressure.

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Even worse, it sinks completely to the floor. Check here for special coupons and promotions. The master cylinder is the component that generates all of the pressure for the braking system, and if it develops any sort of problems sealing or distributing pressure, this may be felt in the pedal.

The brake master cylinder needs a certain level of brake fluid to create the hydraulic pressure necessary for slowing down the vehicle.

With constant use over time, the seals inside of the cylinder can wear out and form internal leaks.

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The problem with air is that it is compressible, while the fluid that goes in your braking system is not. As piston(s) move along the bore of the master cylinder, this movement is transferred through the hydraulic fluid, to result in a movement of the slave cylinder(s). If it isn't, buy the proper brake fluid for your vehicle and add it until the level meets the line.