THE BRAKING SYSTEM

GENERAL PRINCIPLE

1. Kinetic to heat energy

2. Force of brake pedal

3. Forces the push rod in the brake booster which in turn forces the primary piston in the master cylinder forward, the fluid pressure pushes the secondary piston

4. The brake pipes carry fluid pressure to proportioning valve then to the brake callipers

5. the piston forces the brake pad against the disc rotor  

6. The friction reduces the rotor speed.

7. The wheel being attached to the rotor is therefore slowed down.

Most modern cars have disc brakes on the front wheels, and some have disc brakes on all four wheels. This is the part of the brake system that does the actual work of stopping the car.the most common type of disc brake on modern cars is the single-piston floating calliper.

 

How disc brakes work!   VIDEO

How to Bleed brakes!

1. Clean out reservoir
2. Top up with new fluid
3. Select DOT
4. Open bleeder nipple
5. Put block under brake pedals
6. Pump 6 times, hold down
7. Open nipple and close again
8. Pump 6 times and hold down
9. Open nipple and close again

Why do we bleed?

To replace old fluid, or if you are replacing a brake park, if there is air in there you have to bleed it.

Drum Brakes

Brake shoes, with linings attached, are situated inside brake drums. These drums revolve with the wheel. When pressure is applied to the brake pedal, hydraulic fluid in the braking system forces the brake shoes outward until the linings come into contact with the inside of the drum and force it to stop.

Disc Brakes

These operate on a similar principle, except that the brake consists of a stationary caliper, with a disc revolving with the wheel. When the pedal is pressed down, hydraulic pressure forces pads in the caliper to clamp on the disc, much like the operation of a bicycle brake. Most late model cars have disc brakes or a combination of front disc and rear drum brakes.

Brakes are sensitive to heat, water and moisture, and the pads and linings wear every time you put your foot on the brake pedal.