3.1 Braking system

• explain functions of the braking system in a light vehicle
• describe types of brakes used in light vehicles
• illustrate the layout of brake systems used in light vehicles
• describe the operation of braking system of a light vehicle
• service the braking system of a light vehicle
• appreciate the importance of brake system in a light vehicle

“Why are different types of brake systems used in light vehicles?”

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1. Slow, stop and hold
   40 min · 1 practice tasks · quiz
   State the three jobs of a light-vehicle brake system and name heat as the result of the friction that does them.
2. Disc and drum
   40 min · 1 practice tasks · quiz
   Name the parts that grip a disc and the parts that grip a drum on a light vehicle.
3. Cable and fluid
   40 min · 1 practice tasks · quiz
   Separate a mechanical brake path from a hydraulic one, and say why the parking brake stays mechanical.
4. Four layouts
   40 min · 1 practice tasks · quiz
   Sketch the hydraulic disc, the hydraulic drum, the mechanical parking brake, and a dual circuit.
5. How the fluid multiplies force
   40 min · 1 practice tasks · quiz
   Calculate pressure from the master-cylinder piston and the force at a larger caliper piston.
6. The vacuum servo
   40 min · 1 practice tasks · quiz
   Explain how the brake servo unit helps the driver, and what remains when the vacuum is lost.
7. How shoes and pads work
   40 min · 1 practice tasks · quiz
   Describe leading and trailing shoes, a sliding caliper, and a careful drum adjustment.
8. Fluid, leaks and the level
   40 min · 1 practice tasks · quiz
   Choose the fluid named on the cap, read a falling level, and inspect for leaks.
9. Bleeding air
   40 min · 1 practice tasks · quiz
   Bleed a hydraulic brake in a teacher-led order, closing the nipple before the pedal is released.
10. Pads, shoes and the bay check
    40 min · 1 practice tasks · quiz
    Replace pads and a shoe under the teacher, clean without petrol or an air blast, and decide from a stationary check.