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A power braking system consists of several distinct components, including the vacuum booster, master cylinder, brake fluid reservoir and lines, and calipers (or drums). Power brakes have been around in some form since the 1920s, and since the late 20th century all cars sold in North America have been equipped with power brakes.
The hydraulic braking system is designed as a closed system: unless there is a leak in the system, none of the brake fluid enters or leaves it, nor does the fluid get consumed through use. Leakage may happen, however, from cracks in the O-rings or from a puncture in the brake line.
Starting life as a sightseeing bus for a motorcoach customer, the new-generation Supercoach (renamed as a single word) entered production in 1948, with Crown producing its first school bus example in late 1949. [1] [3] In a move back to the mid-engine layout, the design of the 1950 Crown Supercoach broke many precedents in school bus construction.
IC Bus (originally IC Corporation) is an American bus manufacturer.Headquartered in Lisle, Illinois, IC is a wholly owned subsidiary of International Motors.Established in 2002 by Navistar through the reorganization of subsidiary manufacturer American Transportation Corporation (AmTran), IC currently produces school buses and commercial-use buses for multiple applications.
North American Bus Industries, Inc. (NABI) was a manufacturer of heavy-duty transit buses with its headquarters, bus manufacturing and assembly operations, located in Anniston, Alabama. [1] Its products ranged from 31-feet to 60-feet in length, and were sold to operators throughout the United States and Puerto Rico .
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Truck air-actuated disc brake. An air brake or, more formally, a compressed-air-brake system, is a type of friction brake for vehicles in which compressed air pressing on a piston is used to both release the parking/emergency brakes in order to move the vehicle, and also to apply pressure to the brake pads or brake shoes to slow and stop the vehicle.
The Transit Coach was the first school bus produced with a mid-engine layout and would be among the first to use a diesel-fueled engine. The model line also offered the highest-capacity school bus ever produced, offering up to 97-passenger seating (current design standards restrict maximum capacity to 90).