Exam 50: Brake Systems

On a disc/drum system, the rear drum brakes lock up when the brake pedal is pressed hard. Technician A says the proportioning valve may not be functioning. Technician B says the axle height valve may be out of adjustment. Who is correct?

____________________ bleeding is performed on a master cylinder before it is installed on the vehicle.

______ friction is generated between the brake pads and rotors when the vehicle is descending a steep hill.

A proportioning valve reduces fluid pressure to ______.

Organic friction material _____ semimetallic materials.

When the brakes are applied while the vehicle is moving forward, the weight of the vehicle  shifts toward the rear wheels.

Asbestos has not been used in brake linings or pads since 2003.

If the front hydraulic circuit fails on a front/rear split brake system, the vehicle will lose 50 percent of its braking power.

The upward movement of the rear suspension opens the ______.

List two ways of improving heat dissipation on a disc brake.

Residual check valves are found only on vehicles with rear disc brakes.

The amount of pressure exerted by the brakes is being discussed. Technician A says short brake lines generate more pressure than long brake lines. Technician B says the condition of the piston seals in the master cylinder influences the amount of pressure developed. Who is correct?

What is a tandem master cylinder?

Which of the following is NOT a component of a typical dual master cylinder?

Translucent plastic brake fluid reservoirs eliminate the need to remove the fluid caps during a complete brake system inspection.

The brake system converts the momentum of the vehicle into ____________________.

A dual brake system uses a(n)____________________ master cylinder.

What is the function of the line printed along the length of a brake hose?

An metric bubble flare fitting may also be called a(n)____________________ fitting.

The power brakes in a vehicle are grabbing. Technician A checks for grease or oil on the brake shoe and pad linings. Technician B checks the fluid level in the master cylinder. Who is correct?