ASE Brakes Terms Test Exam
Abrasion Rubbing away or wearing of a part
ABS Anti-lock Braking System
accumulator in non-integral ABS system a chamber that temporarily stores fluid during the pressure
decrease phase ABS operation
accumulator in integral ABS system a sealed vessel containing a thick flexible diaphragm that separates
brake fluid from high pressure nitrogen gas
accumulator in hydro-boost power brake system a component that provides a reserve of at least two
power assisted stops if there is a loss of hydraulic pressure.
actuator a control device that delivers mechanical action in response to an electrical signal
ADAS Advanced Driver Assist Systems, used to describe a number of safety systems with semi- or full
autonomous functions. ie.. active cruise control, lane departure warning
air gap a specified space between two components
air lock a bubble of air trapped in a fluid circuit that interferes with the normal circulation of the fluid.
Alternating Current (AC) an electric current whose polarity is constantly changing from positive to
negative and then back again
anchor pin a component located on the brake backing plate, on which the brake shoes rotate and to
which the return springs are secured
, Anti-Lock Braking System (ABS) a computerized braking system that automatically slows and stops the
vehicle when the driver applies hard, steady pressure by releasing hydraulic pressure to wheels about to
lock up.
Hydraulic modulator regulates hydraulic fluid pressure to each brake assembly in the ABS
anti-rattle spring a device used with disc brake pads to keep them from moving and making noise
backing plate component to which the brake shoes, wheel cylinder, and related components are
attached.
ball bearing an anti-friction bearing that uses a series of steel balls held between inner and outer bearing
races
Bearing Race machined circular surface of a bearing against which the roller or ball bearings ride
Bleeder Screw a small valve-like screw located on disc brake calipers, wheel cylinder and some master
cylinder used to bleed air from the brake system
boot a protective rubber cover or seal that issued to protect the inside of a caliper or wheel cylinder
from contaminants
brake actuator assembly similar to an ABS hydraulic control unit, typically used in ECBA systems
brake drag a condition that occurs when brake pads or shoes are in continuous contact with the disc
brake rotors or brake drums
Brake Drum a round cast iron housing attached to an axle shaft or spindle, on which the brake shoes
press to stop its rotation
brake fade The phenomenon that takes place when the temperature of the friction surfaces increases to
a point where the application of heavy pedal pressure results in little braking action
Abrasion Rubbing away or wearing of a part
ABS Anti-lock Braking System
accumulator in non-integral ABS system a chamber that temporarily stores fluid during the pressure
decrease phase ABS operation
accumulator in integral ABS system a sealed vessel containing a thick flexible diaphragm that separates
brake fluid from high pressure nitrogen gas
accumulator in hydro-boost power brake system a component that provides a reserve of at least two
power assisted stops if there is a loss of hydraulic pressure.
actuator a control device that delivers mechanical action in response to an electrical signal
ADAS Advanced Driver Assist Systems, used to describe a number of safety systems with semi- or full
autonomous functions. ie.. active cruise control, lane departure warning
air gap a specified space between two components
air lock a bubble of air trapped in a fluid circuit that interferes with the normal circulation of the fluid.
Alternating Current (AC) an electric current whose polarity is constantly changing from positive to
negative and then back again
anchor pin a component located on the brake backing plate, on which the brake shoes rotate and to
which the return springs are secured
, Anti-Lock Braking System (ABS) a computerized braking system that automatically slows and stops the
vehicle when the driver applies hard, steady pressure by releasing hydraulic pressure to wheels about to
lock up.
Hydraulic modulator regulates hydraulic fluid pressure to each brake assembly in the ABS
anti-rattle spring a device used with disc brake pads to keep them from moving and making noise
backing plate component to which the brake shoes, wheel cylinder, and related components are
attached.
ball bearing an anti-friction bearing that uses a series of steel balls held between inner and outer bearing
races
Bearing Race machined circular surface of a bearing against which the roller or ball bearings ride
Bleeder Screw a small valve-like screw located on disc brake calipers, wheel cylinder and some master
cylinder used to bleed air from the brake system
boot a protective rubber cover or seal that issued to protect the inside of a caliper or wheel cylinder
from contaminants
brake actuator assembly similar to an ABS hydraulic control unit, typically used in ECBA systems
brake drag a condition that occurs when brake pads or shoes are in continuous contact with the disc
brake rotors or brake drums
Brake Drum a round cast iron housing attached to an axle shaft or spindle, on which the brake shoes
press to stop its rotation
brake fade The phenomenon that takes place when the temperature of the friction surfaces increases to
a point where the application of heavy pedal pressure results in little braking action
