A vehicle brake is a brake used to slow down a vehicle by converting its kinetic energy into heat. The basic hydraulic system, most commonly used, usually has six main stages: the brake pedal, the brake boost (vacuum servo), the master cylinder, the apportioning valves, and finally the roadwheel brakes themselves.
Brakes are a normal wear item on any vehicle and they will eventually need to be monitored, maintain and replaced. Factors that can affect brake wear include driving habits, operating conditions, vehicle type and the quality of the brake lining material.
A drum brake is a vehicle brake in which the friction is caused by a set of brake shoes that press against the inner surface of a rotating drum. The drum is connected to the rotating roadwheel hub.
The disc brake is a device for slowing or stopping the rotation of a road wheel. A brake disc (or rotor in U.S. English), usually made of cast iron or ceramic, is connected to the wheel or the axle. To stop the wheel, friction material in the form of brake pads (mounted in a device called a brake caliper) is forced mechanically, hydraulically, pneumatically or electromagnetically against both sides of the disc. Friction causes the disc and attached wheel to slow or stop.
Seven Signs Your Brakes Need to be Inspected
- Noise: screeching, grinding or clicking noises when applying the brakes.
- Pulling: vehicle pulls to one side while braking.
- Low Pedal:brake pedal nearly touches the floor before engaging.
- Hard Pedal: must apply extreme pressure to the pedal before brakes engage.
- Grabbing: brakes grab at the slightest touch to the pedal.
- Vibration: brake pedal vibrates or pulses, even under normal braking conditions.
- Light: brake light is illuminated on your vehicle’s dashboard.