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Merino Practical Mechanics 2012

Trevor Rinaldo

on 25 October 2012

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Transcript of Brakes

photo credit Nasa / Goddard Space Flight Center / Reto Stöckli Trevor and Doug Brakes Basics about Brakes How Disc Brakes Work When you step on the brakes brake fluid is injected into the piston which makes the caliper squeeze the brake pads against the disc. Friction between the pads and the disc slow down your car. Disc brakes are mostly found in the front but can be on all four. When you step on the brakes curved shoes push against the inside of the drum brake to slow down the car. Drum brakes are mostly found in the back of the car How Drum Brakes Work How Brake System Works When you step on the brakes the power booster behind the brake pedal uses either a engine vacuum or a hydraulic pump. When you step on the brakes harder the more, the more the force that goes into the master cylinder. The master cylinder applies the force that you used to step on the brakes to the brake fluid container which makes the brake fluid go through the lines and valves to the hydraulic calipers and wheel cylinders. That makes the calipers squeeze the brake pads against the disc to slow down the car. How ABS work Anti- lock braking system works by automatically modulating the brake pressure during an emergency stop. It prevents the wheels from locking up so the driver has better control. When the ABS brake sensor senses that a brake is about the lock it closes the solenoid valve for that circuit. How to bleed your brake How to replace your brakes How to check brake fluid How disc brakes work How drum brakes work How to slow down if your brakes go out Quiz 1. T F Drum brakes are found mostly in the front

2. T F ABS stands for Anti-Lock Braking System

3. T F A disc is a part in a drum brake system

4. T F There is no such thing as brake fluid

5. T F The brake pads squeeze the calipers to stop the car

6. T F Curved shoes squeeze the disc to stop the car

7. T F ABS locks up all wheels so you have no control

8. T F The harder you step on the brakes the more force that goes into the master cylinder

9. T F Swerving doesn't help slow down your car when your brakes go out

10. T F You never need to bleed your brakes
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