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The pressure of the air holds the spring system in a specific place where the spring brake system is not applied. When the air pressure drops, the spring is released. Once the spring is released, it pushes the push rod that activates the spring brake system, which is an emergency braking system if there is a problem with the brakes.
Oct 2, 2023 · Glossary of Braking Terminology. By Stephen Ruiz and Carroll Smith. ABS: Acronym for Anti-Lock Braking system. Anti Lock braking systems sense the speed and rate of deceleration of each of the wheels of a vehicle independently and, through a microprocessor control system, act to prevent lock up of any of the tires under braking force by cycling the line pressure to the wheel that is ...
- Abs, Or Anti-Lock Brakes
- Abs Ring
- Abs Wheel Speed Sensor
- Accumulator
- Anti-Rattle Springs and Clips
- Backing Plate
- 'Bell mouth'
- Bench Bleeding
- Bleeder Hose
- Bleeder Screw
An automatic system that applies brake pressure, then releases, then applies in a rapid, pulsating fashion repeatedly in order to ensure braking effectiveness on slippery surfaces that would otherwise lead to a skid. Sensors at each wheel measure wheel speed, and can detect if wheels lock up during braking. Should this happen, the ABS system is act...
An ABS ringis a notched ring attached to a wheel hub or behind a brake rotor that is read by an ABS wheel speed sensor to determine the speed of an individual wheel.
A sensor mounted behind a brake rotor that computes the speed of a wheel by reading the notches on a ring attached to the wheel hub or behind a brake rotor. Individual ABS wheel speed sensorsat each of the vehicle's 4 wheels send their information to an anti-lock brake control module. If this module sees a significant difference in the speed of one...
A specially designed reservoir that serves to store pressure needed for antilock brake system operation. A nitrogen-charged chamber is sealed off by a rubber diaphragm, and the nitrogen in this chamber becomes pressurized as brake fluid is pumped into the accumulator by the ABS pump.
Spring-loaded metal hardware pieces which mount to disc brake calipers or pads. Anti-rattle clipsprovide tension necessary to prevent pad looseness that creates vibrations and rattling noises.
On drum brake vehicles, a backing plate is a flat metal plate inside the brake drum on which the brake shoes, wheel cylinders, and other brake parts are mounted. See also "dust shields" for disc brake vehicles. To view backing plates we offer: click here.
A condition on drum brakes where the drum expands outward at its open end. This happens because the metal thickness of the drum has become thinner due to wear, and it's lost structural integrity. Because the brake shoes, which are still flat across, cannot make proper contact to create braking friction, the drum needs to be replaced.
The process of bleeding air out of a master cylinder before installing it in place on the vehicle. See also "brake system bleeding".
A section of plastic hose or rubber tubing used to bleed brake fluid out of the brake system. One end of the tube mounts over the bleeder screw on the caliper housing. When the screw is loosened, brake fluid flows out into a container where the other end of the hose is placed. These are often found in brake bleeder kits.
A screw valve designed with a hollow center to allow fluid to be bled through it when the screw itself is loosened with a wrench. In brake systems, bleeder screwsare found on disc brake calipers and drum brake wheel cylinders as well as on some master cylinders and ABS modulators.
Jun 8, 2018 · Amount of longitudinal (accel. & braking) slip between the tire and the road. This is expressed as the ratio of the velocity of slipping to the CL wheel velocity. As with slip angle, there is an optimum percent slip for maximum grip, beyond which the tire spins. (Motorsports).
The brake shoe return spring is a tension spring found in drum brake systems that pulls the brake shoes away from the brake drum when the brakes are not applied. This spring ensures that the brake shoes do not remain in contact with the drum when the brakes are released, preventing unwanted friction, heat buildup, and premature wear.
3. Lower spring seat: the lower spring seat is a lower mount formed around the shock body for the coil spring 4. Coil spring: the coil spring supports the weight of the vehicle and allows suspension action. 5. Upper spring seat: the upper spring seat holds the upper end of the coil spring and contacts the strut bearing. 6.
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Prepare for the Brakes (A5) ASE certification test. List the parts and terms for drum and disc brakes. List the six brake system categories. Describe the purpose and function of the ABS. Describe the procedure recommended for brake drum removal. List the items that should be checked during a brake inspection. Establish the Mood or Climate.
