Brake System & Safety Glossary

This glossary provides a detailed explanation of essential brake system components and safety parts, highlighting their functions and importance in automotive safety and braking performance.

1. ABS Module

The ABS (Anti-lock Braking System) module controls the anti-lock braking system, preventing wheel lockup during hard braking by modulating brake pressure.

2. Brake Caliper

The brake caliper houses the brake pads and pistons, pressing the pads against the brake rotor to slow or stop the vehicle.

3. Brake Drum

A brake drum is used in drum brake systems, rotating with the wheel and pressing brake shoes against its surface to create friction and slow the vehicle.

4. Brake Line

Brake lines carry hydraulic fluid from the master cylinder to the brake calipers or drums, enabling brake force transfer throughout the system.

5. Brake Pad

Brake pads are friction materials pressed against the rotor by the caliper to create the friction needed to stop the vehicle.

6. Brake Rotor

The brake rotor, or disc, rotates with the wheel, and friction between it and the brake pads slows the vehicle.

7. Master Cylinder

The master cylinder converts the driver’s brake pedal force into hydraulic pressure, which travels through brake lines to activate the brakes.

8. Brake Booster

The brake booster amplifies the force applied to the brake pedal, making it easier for the driver to press down and stop the vehicle.

9. Brake Pedal

The brake pedal is the driver-operated component that initiates braking by pressing down and sending force to the master cylinder.

10. Brake Hose

Brake hoses are flexible lines connecting brake components, allowing movement while delivering hydraulic fluid.

11. Caliper Bracket

The caliper bracket mounts the brake caliper to the vehicle’s suspension, providing stability and support.

12. Brake Dust Shield

The brake dust shield protects the brake rotor and pads from debris, reducing wear and tear.

13. Emergency Brake Cable

The emergency brake cable connects the handbrake lever to the brake mechanism, allowing for manual braking in case of primary brake failure.

14. Brake Fluid

Brake fluid is a hydraulic fluid that transfers force from the master cylinder to the brakes, critical for proper braking function.

15. Brake Light Switch

The brake light switch activates the brake lights when the brake pedal is pressed, alerting drivers behind the vehicle.

16. Brake Shoe

Brake shoes press against the brake drum in drum brakes to create friction and slow the vehicle.

17. Brake Hardware Kit

A brake hardware kit includes components like springs, clips, and retainers for drum brakes, ensuring proper brake function.

18. Brake Chamber

The brake chamber converts air pressure into mechanical force, often used in air brake systems in commercial vehicles.

19. Slack Adjuster

The slack adjuster maintains the correct brake shoe distance from the drum in air brake systems, ensuring effective braking.

20. Spring Brake

A spring brake is a fail-safe brake in air brake systems, automatically applying the brakes if air pressure is lost.

21. ABS Sensor

The ABS sensor monitors wheel speed and relays data to the ABS module, helping prevent wheel lockup.

22. Brake Adjuster

The brake adjuster keeps the brake shoes at the correct distance from the drum, ensuring consistent braking performance.

23. Parking Brake Lever

The parking brake lever manually engages the parking brake, preventing the vehicle from rolling when parked.

24. Proportioning Valve

The proportioning valve adjusts brake pressure between the front and rear brakes, optimizing braking balance and stability.

25. Rotor Backing Plate

The rotor backing plate supports the brake rotor, protecting it from road debris.

26. Wheel Cylinder

In drum brakes, the wheel cylinder presses the brake shoes against the drum, creating friction to slow the vehicle.

27. Brake Proportioning Valve

This valve adjusts brake force distribution between the front and rear brakes, helping maintain stability during braking.

28. Caliper Slide Pin

The caliper slide pin allows the caliper to move and apply even pressure on the brake pads.

29. ABS Control Module

The ABS control module processes sensor data, activating ABS to prevent wheel lockup and maintain control during braking.

30. Hydraulic Brake Booster

The hydraulic brake booster uses hydraulic pressure to increase brake force, common in heavy-duty applications.

31. Disc Brake Conversion Kit

This kit converts drum brakes to disc brakes, enhancing braking performance and reducing brake fade.

32. Brake Master Cylinder Reservoir

The reservoir stores brake fluid for the master cylinder, ensuring a consistent supply of hydraulic fluid.

33. Anti-Rattle Clip

Anti-rattle clips prevent brake pads from rattling or vibrating, reducing noise during braking.

34. ABS Relay

The ABS relay powers the ABS system, enabling anti-lock braking when engaged.

35. Brake Pad Wear Sensor

This sensor monitors brake pad thickness, alerting the driver when it’s time to replace the pads.

36. Vacuum Brake Booster

The vacuum brake booster amplifies braking force using engine vacuum, making it easier to press the brake pedal.

37. Brake Control Valve

The brake control valve regulates air pressure in air brake systems, ensuring consistent brake application.

38. Brake Caliper Piston

The caliper piston presses the brake pads against the rotor, creating the friction needed to stop the vehicle.

39. Brake Pad Shim

Brake pad shims reduce noise and vibration, enhancing braking comfort and performance.

40. Brake Pressure Modulator Valve

This valve adjusts brake pressure based on road conditions, commonly used in ABS systems.

41. Brake Line Bracket

The brake line bracket holds brake lines in place, preventing movement and damage.

42. Parking Brake Shoe

The parking brake shoe presses against the brake drum to hold the vehicle in place when the parking brake is engaged.

43. Caliper Bolt

Caliper bolts secure the brake caliper to the caliper bracket, ensuring stable braking performance.

44. Power Brake Booster

The power brake booster amplifies brake pedal force, assisting the driver in applying the brakes.

45. Rotor Retaining Screw

The rotor retaining screw secures the brake rotor to the wheel hub, ensuring stability during braking.

46. Brake Return Spring

The brake return spring helps retract the brake pads or shoes after braking, ensuring they don’t drag.

47. Brake Load Sensor

The brake load sensor adjusts brake force distribution based on vehicle load, enhancing stability.

48. Brake Fluid Reservoir

The reservoir stores brake fluid, ensuring a consistent supply to the master cylinder.

49. Proportioning Valve Bracket

This bracket mounts the proportioning valve to the vehicle frame, securing its position.

50. Booster Vacuum Line

The booster vacuum line supplies vacuum pressure to the brake booster, necessary for amplified braking force.

51. Caliper Pin Boot

The caliper pin boot protects the caliper pin from dirt and moisture, ensuring smooth caliper movement.

52. Dust Boot

Dust boots cover caliper pistons and other components, protecting them from dirt, water, and debris.

53. Brake Bleeder Screw

The bleeder screw releases air from the brake lines during brake bleeding, ensuring proper hydraulic function.

54. Brake Cable Pulley

The brake cable pulley guides the parking brake cable, ensuring smooth operation of the parking brake.

55. Brake Guide Pin

The guide pin aligns the caliper, ensuring even pressure on the brake pads.

56. Brake Release Valve

The release valve releases air pressure from air brakes, deactivating the brakes when needed.

57. Brake Caliper Guide

The caliper guide ensures the caliper applies even pressure, reducing uneven pad wear.

58. ABS Pump Motor

The ABS pump motor regulates hydraulic pressure in the ABS system, preventing wheel lockup.

59. Brake Vacuum Pump

The vacuum pump provides vacuum for the brake booster, especially in vehicles with turbocharged engines.

60. Brake Drum Spring

The brake drum spring retracts the brake shoes after braking, preventing them from dragging.

61. Brake Caliper Mounting Bracket

This bracket attaches the caliper to the vehicle, providing stability during braking.

62. Parking Brake Actuator

The parking brake actuator applies the parking brake mechanically or electronically.

63. Brake Hose Clip

The brake hose clip secures the brake hose, preventing movement and damage.

64. Brake Pedal Bushing

The brake pedal bushing provides a smooth pivot point for the brake pedal, ensuring reliable operation.

65. Brake Backing Plate

The backing plate supports brake components in drum brakes, providing a stable foundation.

66. Brake Shoe Adjuster

The brake shoe adjuster keeps the brake shoes at the proper distance from the drum, maintaining consistent braking.

67. Brake Hardware Spring

This spring keeps brake components in place in drum brakes, ensuring proper function.

68. Caliper Guide Bolt

The guide bolt secures the caliper to the bracket, providing stability during braking.

69. Caliper Slide Bushing

The slide bushing ensures smooth caliper movement, allowing even brake pad pressure.

70. Brake Reservoir Cap

The reservoir cap seals the brake fluid reservoir, keeping contaminants out.

71. Brake Warning Light

This light on the dashboard indicates a problem with the brake system, such as low fluid or worn pads.

72. Drum Brake Adjuster

The drum brake adjuster maintains brake shoe position, ensuring effective braking performance.

73. Hydraulic Control Unit

The hydraulic control unit in ABS systems regulates brake pressure, preventing wheel lockup.

74. Emergency Brake Kit

This kit includes parts to repair or replace the emergency brake, ensuring reliable parking brake function.

75. Brake Return Spring Kit

A return spring kit includes springs that retract brake shoes after braking, ensuring they don’t drag.

This list captures critical brake and safety components for maintaining effective braking and vehicle control. Each term is essential for understanding vehicle safety and efficient brake maintenance.

76. ABS Pressure Sensor

The ABS pressure sensor monitors hydraulic brake pressure, helping the ABS module adjust pressure to prevent wheel lockup.

77. Hydraulic Brake Hose

The hydraulic brake hose transfers brake fluid under pressure from the master cylinder to the calipers or wheel cylinders.

78. Vacuum Hose Assembly

The vacuum hose assembly connects the engine's vacuum source to the brake booster, providing the necessary pressure for power-assisted braking.

79. Disc Pad Retainer

The disc pad retainer secures brake pads in place within the caliper, reducing movement and noise during braking.

80. Rotor Bolt

The rotor bolt secures the brake rotor to the wheel hub, ensuring stability and alignment during braking.

81. Brake Caliper Bushing

The caliper bushing ensures smooth movement of the brake caliper, allowing even pressure on the brake pads.

82. Brake Cable End

The brake cable end connects the parking brake cable to the braking mechanism, allowing manual brake application.

83. Bleed Screw

The bleed screw releases trapped air from the brake lines during the bleeding process, crucial for maintaining hydraulic pressure.

84. Brake Pad Clip

The brake pad clip secures brake pads within the caliper, reducing movement and noise.

85. Brake Caliper Seal Kit

A brake caliper seal kit contains seals that prevent fluid leaks within the caliper, ensuring optimal hydraulic pressure.

86. Handbrake Lever

The handbrake lever, or emergency brake lever, is used to manually engage the parking brake.

87. Brake Line Grommet

The brake line grommet protects brake lines from wear where they pass through holes or brackets.

88. Brake Dust Boot

The dust boot protects brake caliper components from dirt, moisture, and debris, extending their life.

89. Caliper Piston Seal

The caliper piston seal prevents brake fluid from leaking out of the caliper piston, maintaining hydraulic pressure.

90. Brake Clip Kit

A brake clip kit includes clips to secure brake pads and other components, reducing rattle and noise.

91. Parking Brake Switch

The parking brake switch activates a dashboard indicator when the parking brake is engaged.

92. Caliper Hardware

Caliper hardware includes bolts, pins, and clips necessary to mount and secure the brake caliper.

93. Emergency Brake Shoe

The emergency brake shoe engages with the brake drum or rotor to hold the vehicle stationary when the emergency brake is applied.

94. Brake Line Adapter

The brake line adapter connects different types or sizes of brake lines, allowing flexible configurations.

95. Brake Fluid Pressure Sensor

This sensor monitors brake fluid pressure, relaying information to the ABS or brake control module.

96. Brake Servo

The brake servo, or brake booster, amplifies brake pedal force, making it easier for the driver to apply the brakes.

97. Caliper Spacer

Caliper spacers align the caliper in relation to the rotor, ensuring even pad wear and effective braking.

98. Disc Brake Shield

The disc brake shield protects the brake rotor from debris and reduces brake dust.

99. Brake Pad Pin

The brake pad pin holds the brake pads in place within the caliper, ensuring they remain secure during braking.

100. ABS Fuse

The ABS fuse provides overcurrent protection for the ABS system, preventing damage in the event of a short circuit.

101. Drum Brake Hardware Kit

This kit includes springs, clips, and other components required for the assembly and maintenance of drum brakes.

102. Parking Brake Control Module

The parking brake control module electronically controls the engagement and release of the parking brake in modern vehicles.

103. Handbrake Cable Adjuster

The handbrake cable adjuster allows for fine-tuning of the parking brake cable, ensuring proper engagement.

104. Caliper Carrier

The caliper carrier, or caliper bracket, secures the caliper to the vehicle’s suspension or axle.

105. Brake Pedal Pad

The brake pedal pad provides grip and comfort on the brake pedal surface, enhancing control during braking.

106. Booster Diaphragm

The booster diaphragm creates vacuum pressure within the brake booster, assisting in braking.

107. Brake Rotor Shield

The brake rotor shield, or backing plate, protects the rotor from debris and reduces brake dust buildup.

108. Brake Shoe Kit

A brake shoe kit includes all necessary components for brake shoe replacement in drum brake systems.

109. Emergency Brake Cable Clip

The emergency brake cable clip secures the cable to the vehicle, ensuring it stays in position.

110. Wheel Speed Control Unit

The wheel speed control unit monitors and adjusts wheel speed, essential for ABS and traction control systems.

111. Brake Reservoir Tube

The brake reservoir tube connects the master cylinder reservoir to the brake lines, supplying fluid to the brake system.

112. Handbrake Cable Mount

The handbrake cable mount holds the cable in place, ensuring smooth operation.

113. Brake Hardware Clips

Brake hardware clips secure various brake components, reducing noise and vibration.

114. Brake Shoe Hold Down Spring

This spring keeps the brake shoe in place in drum brakes, ensuring consistent contact with the drum.

115. Power Brake Pump

The power brake pump provides additional brake fluid pressure in certain power-assisted braking systems.

116. Brake Line T-fitting

The T-fitting splits brake fluid flow to different lines, directing hydraulic pressure to various brake components.

117. Disc Brake Clip

Disc brake clips secure the brake pads within the caliper, reducing noise and pad movement.

118. Rotor Set Screw

The rotor set screw secures the brake rotor to the wheel hub, preventing movement during wheel installation.

119. Brake Line Connector

The brake line connector joins brake lines, maintaining a continuous fluid path within the braking system.

120. Brake Pad Holder

The brake pad holder secures the pads within the caliper, ensuring stable braking force.

121. Vacuum Booster

The vacuum booster amplifies braking force using engine vacuum, helping reduce the force needed on the brake pedal.

122. Rear Drum Brake Kit

This kit includes brake shoes, drums, and hardware needed for servicing rear drum brakes.

123. Brake Drum Adjuster

The brake drum adjuster maintains the proper distance between the brake shoes and drum, ensuring effective braking.

124. Emergency Brake Handle

The emergency brake handle, or lever, manually engages the emergency brake to secure the vehicle when parked.

125. Brake Hose Assembly

The brake hose assembly includes hoses and fittings to connect brake components, enabling flexible fluid transfer.

126. Wheel Brake Kit

A wheel brake kit includes all necessary parts to replace or repair brakes on a single wheel.

127. Front Brake Line

The front brake line carries brake fluid from the master cylinder to the front brakes, allowing brake application at the front wheels.

128. Caliper Guide Sleeve

The caliper guide sleeve supports the caliper pin, allowing smooth caliper movement and even pad wear.

129. Brake Pad Carrier

The brake pad carrier secures brake pads within the caliper, reducing vibration and movement.

130. Brake Bias Adjuster

The brake bias adjuster allows for fine-tuning of front-to-rear brake force distribution, essential in high-performance applications.

131. ABS Actuator

The ABS actuator regulates hydraulic pressure to each wheel during braking, preventing wheel lockup.

132. Brake Proportioning Bracket

The proportioning bracket holds the brake proportioning valve, which adjusts front-to-rear brake force.

133. Brake Kit Retainer

The kit retainer secures various brake components in place, preventing movement and wear.

134. ABS Housing

The ABS housing encases ABS components, protecting them from damage.

135. Caliper Guide Pin Kit

This kit includes pins and boots to support the caliper’s movement, ensuring even pad wear.

136. Rear Parking Brake Cable

The rear parking brake cable connects the parking brake lever to the rear brakes, enabling manual braking.

137. Caliper Support

The caliper support holds the caliper, ensuring stable and effective braking.

138. Brake Fluid Bleeder Kit

This kit includes tools to bleed air from the brake lines, restoring hydraulic pressure.

139. Brake Line Sleeve

The brake line sleeve protects brake lines from wear and tear, especially where they pass through metal parts.

140. Brake Hose Assembly Kit

A brake hose assembly kit includes hoses and connectors needed to replace or repair brake hoses.

141. Emergency Brake Clamp

The emergency brake clamp secures the emergency brake cable, preventing movement.

142. ABS Pump Assembly

The ABS pump assembly generates hydraulic pressure within the ABS system, preventing wheel lockup.

143. Brake Hose Retainer

The brake hose retainer holds brake hoses in place, preventing damage and leaks.

144. Brake Line Guide

The brake line guide supports and aligns brake lines, preventing movement and potential leaks.

145. Brake Pedal Shaft

The brake pedal shaft connects the pedal to the master cylinder, enabling brake force application.

146. ABS Warning Sensor

The ABS warning sensor alerts the driver to issues within the ABS system, activating a warning light on the dashboard.

147. Drum Brake Cable

The drum brake cable connects the parking brake to the drum brakes, enabling manual brake application.

148. Brake Pad Plate

The brake pad plate supports the pad material, ensuring even pressure during braking.

149. Caliper Guide Boot Kit

This kit includes boots to protect caliper guide pins, ensuring smooth caliper movement.

150. Brake Caliper Repair Kit

A caliper repair kit includes seals and components for caliper maintenance, restoring performance.