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  2. Brake bleeding - Wikipedia

    en.wikipedia.org/wiki/Brake_bleeding

    A brake bleed screw is normally mounted at the highest point on each cylinder or caliper. There are five main methods of bleeding: [1] The pump and hold method, the brake pedal is pressed while one bleed screw at a time is opened, allowing air to escape. The bleed screw must be closed before releasing the pedal, or a one-way valve must be fitted.

  3. Vacuum brake - Wikipedia

    en.wikipedia.org/wiki/Vacuum_brake

    Vacuum brake cylinder in running position: the vacuum is the same above and below the piston Air at atmospheric pressure from the train pipe is admitted below the piston, which is forced up. In its simplest form, the automatic vacuum brake consists of a continuous pipe—the train pipe—running throughout the length of the train.

  4. Vacuum delay valve - Wikipedia

    en.wikipedia.org/wiki/Vacuum_delay_valve

    These are commonly used in automobiles to alter the behavior of vacuum switches, vacuum motors, and other vacuum devices. The engine in a common automobile produces almost 20 inches of mercury (68 kPa ) of vacuum, and this pressure differential has been utilized for everything from automatic locks and windshield wipers to operating emissions ...

  5. Power brakes - Wikipedia

    en.wikipedia.org/wiki/Power_brakes

    They work by taking the pressure given by the master cylinder to force the pistons against the rotor. The development and use of disc-type brakes began in England in the 1890s. The first caliper-type automobile disc brake was patented by Frederick William Lanchester in his Birmingham factory in 1902. In a disc-braking system the rotors are ...

  6. Hydraulic brake - Wikipedia

    en.wikipedia.org/wiki/Hydraulic_brake

    The driver's brake pedal simply controls a valve to bleed pressure into the brake units at the wheels, rather than actually creating the pressure in a master cylinder by depressing a piston. This form of brake is analogous to an air brake system but with hydraulic fluid as the working medium rather than air.

  7. Brake cleaner - Wikipedia

    en.wikipedia.org/wiki/Brake_cleaner

    Brake cleaner, often also called parts cleaner, is a mostly colorless cleaning agent, mainly used for cleaning the brake disks, the engine compartment and underfloor of motor vehicles. An important feature is that the brake cleaner leaves no residue after the solvents evaporate .

  8. Vacuum breaker - Wikipedia

    en.wikipedia.org/wiki/Vacuum_breaker

    A vacuum breaker is a device that prevents water from being siphoned backward in a direction it is not desired to go. They are commonly placed on a bibcock valve or toilet or urinal flush valve , in which application they can prevent hose or drainage water from back-siphoning into the public drinking water system.

  9. Compression release engine brake - Wikipedia

    en.wikipedia.org/wiki/Compression_release_engine...

    The closed throttle provides engine braking by forcing the engine to generate a vacuum between the throttle and the cylinders. Typically, the controls for a compression brake consist of an on/off switch and often a selector that controls the number of cylinders on which the brake is active. Throttle and clutch switches are integral with the system.

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