Components
Theory & Operation
Foundation Brakes
Drum Brakes
Gauges
100

This component pumps air into the air storage tanks.

What is Air Compressor?

100

This device applies and releases the brakes when you use the brake pedal during normal driving.

What is The Service Brakes?

100

These type of brakes are used at each wheel.

What is Foundation Brakes?

100

Braking causes friction, which slows the vehicle and causes ........

What is Heat?

100

A low air pressure warning signal is required on vehicles with air brakes. A warning signal you can see must come on before the air pressure in the tank falls below ......

What is 60psi? 

200

This component controls when the air compressor will pump air into the air storage tanks.

What is Air Compressor Governor?

200

This device applies and releases the parking brakes when you use the parking brake control.

What is The Parking Brake System?

200

This type of brakes is the most common brakes for CMVs

What is S-Cam Brakes?

200

Too much heat from braking can cause ............

What is Brake Failure? 

200

All vehicles that are equipped with air brakes have this type of guage.

What is Supply Pressure Gauge?

300

Each tank is equipped with this component at the bottom.

What is Air Tank Drains?

300

This device uses parts of the service and parking brake systems to stop the vehicle in a brake system failure.

What is The Emergency Brake System?

300

In this type of brakes, the brake chamber push rod pushes a wedge directly between the ends of two brake shoes.

What is Wedge Brakes?

300

This part is used to cause friction (rub) against the drum when activated.

What is Brake Lining or Brake Shoes?

300

Tractor and straight truck spring brakes will come fully on when air pressure drops to a range of.......

What is 40 to 20psi? 

400

This component is installed in the first tank that protects the air system from exploding.

What is Safety Relief Valve? 

400

This device can be operated by turning a quarter turn or by pulling a cable.

What is Air Tank Drain?

400

This type of brakes uses a power screw that clamps the rotor between two brake lining pads of a caliper.

What is Disc Brakes?

400

Air pressure pushes the rod out, moving the slack adjuster, thus twisting the brake camshaft.

What is S-Cam Brakes?

400

This gauge shows how much air pressure you are applying to the brakes.

What is Application Pressure Gauge?

500

This component may be air cooled or may be cooled by the engine cooling system.

What is Air Compressor?

500

This device is usually in the normal position but has the ability to cut brakes by half.

What is Front Brake Limiting Valve? 

500

These parts are located on each end of the vehicle's axles. Hint the wheels are bolted to them.

What is Brake Drums?

500

The S-Cam forces the brake shoes from one another and presses them against the inside of the brake drum.

What is away?

500

If vehicles have a dual air brake system, what possible types of gauges would be available?

What is two air pressure gauges or one air pressure gauge with two needles? 

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