Brake Systems 2 Flashcards
All manufacturers recommend a specific sequence to follow when bleeding a vehicles brakes.
True or false
True
Power brakes are completely different than a standard hydraulic brake system, using different types of master cylinders, calipers, and hydraulic circuits.
True or false
False
What kind of friction is generated between the brake pads and rotors when the vehicle is descending a steep hill?
Kinetic
What is the purpose of the master cylinder?
To generate the hydraulic pressure needed to apply the brake mechanisms.
What is the most common cause of brake hose failure?
Stressing the hose during installation
What is the most common bleeding sequence when bleeding dual diagonal split brake systems?
Right rear, left front, left rear, right front.
What type of power assist unit uses pressure developed by an external pump, such as a power steering pump?
Hydraulic assist
Which of the following is NOT A component of a typical dual master cylinder?
Primary piston
Piston stop bolt
Pressure relief valve
Secondary cup
Pressure relief valve
What would happen to the brake pedal if the diaphragm of a vacuum power booster was leaking?
Brake pedal would be extremely hard
Which of the following fluid should be used in brake systems?
Power steering fluid
Engine oil
Transmission fluid
None of the above
None of the above
In what year where cars required to have two separate brake systems?
1967
Dissipation of heat from the brake components is necessary to prevent brake _______.
Fade
While discussing brake fluids, technician A says that hygroscopic brake fluid absorbs moisture from the air. Technician B says that DOT 3 brake fluid has a higher boiling point than DOT 4 fluid. Who is correct?
A only
The power brakes and a vehicle are grabbing. Technician A checks for grease or oil on the brake shoe and pad linings. Technician B checks the fluid in the master cylinder who was correct?
A only
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?
B only
