the solid creation is counting on the brakes working.
When a brake master cylinder is damaging, firm symptoms clearly present the crunch. Generally, a damaging skillful cylinder Testament leak brake fluid. Since the whole system relies upon hydraulic pressure to operate, the problem should be addressed right away to lessen the possibility of a total brake failure.
Characteristic Symptoms
The leak could be external or internal--either way, you will notice that the brake pedal will sink to the floor when it is pressed for an extended period of time, a phenomenon known as "extended travel". External leaks past the rear piston will often be evidenced by brake fluid on the rear boot and on the firewall (the panel that divides the engine compartment from the rest of the car). A warning light on your dashboard may come on if system pressure gets too low.
Facts
Hydraulic systems rely on internal pressure to perform tasks like stopping the motion of a speeding 2,000 pound vehicle via the brakes. If there is a leak in your brake master cylinder, do not delay in servicing the problem. The problem may not be evident if you check the fluid level, since an internal leak does not affect the overall amount of fluid in the system. The master cylinder does have a reservoir that can be checked, but if more than an ounce or two of fluid is needed, it is likely there is a leak somewhere in the system.
Components
The basic parts of a brake master cylinder are a housing, reservoir, piston, rubber cup and boot, residual pressure valves and a return spring.Most shops will simply replace a bad brake master cylinder, but there is an option to have yours rebuilt, if you prefer a solution that creates less waste. Basically, when a master cylinder is rebuilt, it is taken apart and the cylinder is honed and the valves and piston cups are replaced.
Most modern vehicles use slave cylinders with two pistons so that if there is a leak on one side, the other will still be able to provide braking power to two wheels.
