1. AUTOMOTIVE BRAKING SYSTEMS

2. Friction develops heat which absorbs kinetic energy of the car
How it Works
Friction develops heat which absorbs kinetic energy of the car

3. PURPOSE OF BRAKING SYSTEM
Stop the vehicle by converting the kinetic energy of the vehicle to heat energy.
Heat energy is created in the brakes by friction.
Friction is created between a moving and a non-moving surface at each wheel to generate the heat.
Disc and drum brakes are the most common type of braking systems used.

4. Factors Effecting Braking*
Number of wheels braking.
Weight of vehicle.
Type of friction material.
Surface area of friction material.
Size or discs or drums
Tire traction.
Road surface.
Load transfer.
Incline or decline of road. (gravity)
Engine braking.
Pressure applied

5. Types of Braking Systems
Service brakes. It’s the primary braking system using a the pedal connected to a hydraulic system causing it to operate.
Parking brakes. It’s mechanically applied by a lever or pedal.

6. BASIC PARTS Pedal assembly Hydraulic system Power booster
Disc brake assembly
Drum brake assembly
Parking brake
BASIC PARTS

7. DISC BRAKES
Disc brakes use a rotating disc with two stationary friction pads that are pressed against to rotor by the caliper to create friction and heat.
Disc brakes are more effective at dissipating heat.

8. Disc Brake Rotor
Rotor Pads Caliper Piston Brake Line Bleeder screw Through Bolts

9. Caliper Boot Piston Seal Caliper Housing Bleed Screw O-Ring Bushing
Bolts

10. Caliper*

11. Disc Brake Pads Asbestos Metallic Semi-Metallic Organic

12. Disc Brake Assembly

13. Drum Brakes

14. Brake Light Hydraulic system fails Parking brake is on

15. Master Cylinder
The master cylinder displaces brake fluid under pressure to brake system.
When brake pedal is depressed, push rod moves the primary piston forward in the cylinder.
Hydraulic pressure created and the force of the primary piston spring moves the secondary piston forward.
forward movement of the pistons causes primary cups to cover bypass holes, hydraulic pressure builds up and is transmitted to the wheel cylinders.

16. MASTER CYLINDER
pedal retracts, the pistons allow fluid from the reservoir to fill the chamber
Special sensors within the master cylinder used to monitor level of fluid in reservoir, and alerts driver if pressure imbalance develops.
standard dual master cylinder gives front and rear brakes separate hydraulic systems.

17. Master Cylinder
If a brake fluid leak occurs in one system, the other system will still operate, making it possible to. . .
STOP THE CAR

18. Master Cylinder Reservoirs Master Cylinder Vacuum Line To Front Brakes
To Rear Brakes
Power
Booster
Brake Pedal

19. Brake Parts

20. Basics of Hydraulics

21. BRAKE INSPECTION Remove all four wheels of the vehicle.
On drum brakes remove the drums and wash brake dust with proper cleaner.
Check brake pads and brakes shoes for wear.
Check drums and rotors for wear and damage.

22. Brake Fluid Litmus test Color Non compressible Resists boiling
High &low temperature stability
Non-corrosive to rubber parts
Hydroscopic
Absorbs water

23. Brake Service Visual Inspection Measure Resurface Repair Recondition
Bleed
Test