Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Chapter 50, Problem 1MC
The purpose of the master cylinder is to.
- generate the hydraulic pressure needed to apply the brake
mechanisms
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Technician a says that the malfunction of the ABS can cause the control module to shut off or inhibited the system technician B says the loss of the hydraulic fluid or power booster pressure disables to antilock brake system who is correct
The purpose of the master cylinder is to ______.
a. generate the hydraulic pressure needed to apply the brake mechanisms b. automatically pump the brakes during panic stops c. supply mechanical force to the brake mechanisms d. All the answers are correct.
The purpose of a pressure differential valve is being discussed. Technician A says it alerts the driver if pressure is lost in either portion of a dual braking system. Technician B says it provides the needed pressure balance between the front and rear brakes. Who is correct?
a. A only b. B only c. both A and B d. neither A nor B
In a diagonal split brake system, how would the vehicle brake in the event of a failure?
a. One front wheel and its rear wheel will brake. b. One front wheel and the opposite rear wheel will brake. c. Only the front wheels will brake. d. All four wheels will have half the total braking force.
When performing the air brake system leakage test, the Certified Inspector must reject the vehicle if the system does not maintain 100 P.S.I. (Perform this test for 1 minute with the brakes fully applied & the engine running on single and/ or combination vehicles). True or False?
Chapter 50 Solutions
Automotive Technology
Ch. 50 - Explain why bleeding air out of a hydraulic system...Ch. 50 - Explain why modern hydraulic braking systems are...Ch. 50 - Describe the functions of the hydraulic system...Ch. 50 - When the brakes are applied on a moving car, the...Ch. 50 - What is the purpose of the master cylinder vent...Ch. 50 - Explain why a height-sensing proportioning valve...Ch. 50 - A three-function combination valve has a brake...Ch. 50 - Explain how vacuum is used to provide a power...Ch. 50 - True or False? Metering and proportioning valves...Ch. 50 - True or False? Semimetallic brake pads still often...
Ch. 50 - The purpose of the master cylinder is to. generate...Ch. 50 - Which of the following can lead to brake hose...Ch. 50 - Which type of brake requires greater application...Ch. 50 - Which of the following is not a factor in...Ch. 50 - Which of the following could cause an extremely...Ch. 50 - A vehicles power brakes are grabbing: Technician A...Ch. 50 - While discussing what affects the amount of...Ch. 50 - The metering valve portion of a combination valve...Ch. 50 - While discussing quick take-up master cylinders:...Ch. 50 - While bleeding a brake system: Technician A...Ch. 50 - The basic frictional parts of a brake system are...Ch. 50 - Vehicle dynamics during braking are being...Ch. 50 - Pressure bleeding is being discussed: Technician A...Ch. 50 - Technician A says that the master cylinder should...Ch. 50 - The hydraulic system of the hydro-boost and...
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- While discussing what affects the amount of pressure exerted by the brakes: Technician A says that the shorter the line, the more pressure there will be. Technician B says that braking force will increase if the size of the pistons in a master cylinder are increased. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardWhile discussing quick take-up master cylinders: Technician A says that this design allows for increased braking power. Technician B says that this design is only used on drum brake systems. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardTrue or False? Disc brakes are not as likely to fade during heavy braking as are drum brakes.arrow_forward
- While discussing pull during braking: Technician A says that this can be caused by one tire being underinflated. Technician B says that a frozen wheel cylinder on one side of the car can cause this. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardTechnician A says that some antilock brake systems use a lateral acceleration sensor in addition to the wheel-speed sensors. Technician B says that traction control systems apply one wheel brake to get the vehicle going in the direction in which it is being steered. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardTechnician A says that the master cylinder should be bled before any individual wheel assembly. Technician B says that the bleeder screw should be closed before the brake pedal is released during manual bleeding of the system. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forward
- Which of the following is a true statement? In some antilock brake systems, the power brake assist is provided by pressurized brake fluid supplied by the hydraulic accumulator. The accumulator is a small, sealed chamber mounted to the pump/motor assembly. The accumulator holds a highly pressurized nitrogen gas that is used to generate a charging pressure. All of the statements are true.arrow_forwardTrue or False? Both the clutch and the brake system may share the same master cylinder.arrow_forwardDisc brakes are not as likely to fade during heavy braking as are drum brakes. True OR False?arrow_forward
- Technician A says that it is normal for the amber brake lamp to light when the ABS is activated during braking. Technician B says that it is normal for the red brake lamp to be on whenever the ignition is on and the engine is off. Who is correct? Technician A only Technician B only Both A and B Neither A nor Barrow_forwardExplain how drum brakes create a self-multiplying brake force.arrow_forwardTechnician A says that replacement wheel rims should be the same as the original equipment wheels in load capacity, offset, width, diameter, and mounting configuration. Technician B says that if wheels are installed that have a different stock width or diameter, make sure to use a tire that has the same overall width as the original tires. Otherwise the vehicles wheel-speed sensors, speedometer, antiock brake system, and many other systems will be affected. Who is correct? a. Technician A only b. Technician B only c. Both A and B Neither A nor Barrow_forward
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