Instead of using hydraulic brake fluid to apply the pads to the brake drums or discs, air pressure is used.
Compressed air.
Yes they do, and they feel about the same to the operator of the vehicle.
Pneumatic schematic in the air brakes in any type or build of truck all work in coordination with each other for smooth driving. The brakes would not be able to smoothly stop without them.
No, they use air pressure or actually the lack of air pressure to stop the vehicle. The brakes are fully on until pressure builds up in the tank releasing the brakes. When you push the brake pedal this removes air from the system and applies the brakes.
Air brake systems have a belt driven air compressor on the motor that feeds an air tank. The air tank has a "pop off valve" that lets off air pressure so the tank doesn't over fill with air. The air tank is connected to the brakes with tubes. In modern air brake systems the brakes are held open by the air pressure that fights springs that push the brakes closed. This is so if the system fails ( loses air pressure ) the brakes will be applied. When the operator depresses the brake peddle the air pressure is released from the brakes and the springs push them against the drum or rotor.
We would need to know what type of brakes you have... S-cam air brakes, air disc brakes, air piston brakes, air wedge brakes, hydraulic drum brakes, hydraulic disc brakes... they're all different.
Air brakes are just as effective as a standard set of brakes. The advantages to air brakes are that you do not have to worry about leaking brake fluid.
Airbrakes on commercial aircraft are hydraulically operated.
The Mercury Mountaineer has hydraulic brakes, not air brakes.
at a guess the brakes have still got air in the system and need bleeding properly
Air brake equipped vehicles usually have a spring brake system which locks down the brakes when there is no air applied. Once air pressure reaches 60 psi, these will unlock, and air will remain in the hold off chamber to keep the spring brakes unlocked. When you bring a vehicle to a stop, air from the air system is metered into the service chamber to clamp the brakes down.
George Westinghouse invented the air brakes