AUTI-224- Chapter 8 Test

Réussis tes devoirs et examens dès maintenant avec Quizwiz!

The proper operation of a vacuum brake booster requires that the engine be capable of supplying at least: 22 in. Hg vacuum. 28 in. Hg vacuum. 16 in. Hg vacuum. 10 in. Hg vacuum.

16 in. Hg vacuum.

The booster receives approximately ____ of vacuum from the intake manifold. 15" 10" 25" 20"

20"

Vacuum boosters consist of all of the following components EXCEPT _________. A combination valve One or two sealed diaphragms An outer housing A diaphragm return spring

A combination valve

Should pressure in the hydraulic system be lost, such as when the engine stalls or the power steering pump drive belt breaks, the hydraulic booster systems accumulator is designed to store sufficient pressure to provide for ______ full-power application(s). Unlimited Many One A few

A few

As a safety measure, part of the hydraulic booster system includes a(n) _______, which assists in maintaining a reserve of system pressure. Fluid reservoir Accumulator Brake reserve light Power steering pump

Accumulator

With the engine running, the check valve allows _____ to be evacuated from the booster, but not to return. Air Fluid Pressure None of the above

Air

To keep the surface area of the diaphragm plate large enough to provide the needed boost, two smaller diaphragms in tandem are used, one _______ the other. On top of Located diagonally from To the left of Directly behind

Directly behind

If the brake pedal doesn't hold pressure, there are no substantial leaks in the system. True False

False

The booster chambers are separated by a _______ diaphragm attached to the diaphragm plate. Flexible silicon Rigid steel Rigid plastic Flexible rubber

Flexible rubber

Power brake units on _______ engines use the vacuum produced in the intake manifold to power the brake booster. Diesel Hybrid Gasoline All of the above

Gasoline

Testing the operation of the electrohydraulic braking system is just like testing the___________. Hydraulic booster system Brake light warning system Vacuum booster system Electronic brake proportioning system

Hydraulic booster system

The vacuum-assisted power booster uses the difference between engine vacuum and atmospheric pressure to ______ the force that acts on the master cylinder pistons. Stabilize Equalize Decrease Increase

Increase

Excessive vacuum is _______ a problem because the booster is designed to work using maximum engine vacuum. Never Frequently Not usually Always

Not usually

If issues are found, follow the manufacturers recommended procedure to diagnose the fault. True False

True

The power booster can be operated by engine vacuum or through hydraulic pressure, which is usually generated by the power steering pump or an electric-driven pump. True False

True


Ensembles d'études connexes

Commercial Bank Management Exam #2- Risk Models

View Set

Truth in Lending Act TILA (Grupo 5) Parte 2

View Set

The Electronic Signature in Global and National Commerce Act (E-Sign) Act)

View Set

Cervical Spinal Nerves and Sympathetic Trunk #1

View Set

chapter 16 lesson 1 World history

View Set