which of the following can cause brake system dragging

Technician A A low brake pedal can also be due to a fluid leak or worn brake linings. All of the following items could cause this erratic pull EXCEPT: A routine inspection would include all of the following EXCEPT. Technician A Who is correct? When I bled the lines, the driver side brake fluid wouldn't come down. Check your pads for any type of contamination. Before we get into the specifics of brakes and their problems, you may want to look at some of the basic rules for troubleshooting in general, as written in the beginning of every Haynes manual: Troubleshooting 101. 100100100 B only I recommend having all the brake lines, calipers, and the master cylinder checked for leaks. Brake pad friction materials may be manufactured from any of the following EXCEPT: makes a noise if the brake pads are due to be replaced. The component in the Figure is involved what procedure? How To Determine Cause of Brake Drag - Ford Truck Enthusiasts Forums Technician B says that the star wheel assembly should be lubricated on the floating end. A vehicle comes in with a complaint of excessive pedal travel before the brakes apply. Calculate the following quantities: The total initial kinetic energy of the system. Answer: The most likely cause is a caliper sticking, either it's the piston or slide pins. Buying a new caliper may cost more but you will make up the cost with the time you save. Slight scoring or heat spots A. You can do this test if your emergency brake handle is near the center console and it is the style that you pull up with your hand. They need to be replaced at once. Hard Pedal: You may have a loss of power assist because the engine vacuum is low. Correct answer D-Air causes a gap in the hydraulic fluid flow because the fluid has to compress the air before it can apply the piston. d-Neither A or B Both A and B All of the following can cause brake system dragging, EXCEPT: a-stuck caliper piston b-misadjusted master cylinder pushrod length c-restricted brake line or hose d-internal master cylinder leak Internal master cylinder leak Which of the following frictional brake systems is used on vehicles today? Technician A I replaced master cylinder already. a. a. Spalling While these are the most common causes of brake issues on your Chevy, you should never allow your brakes to go bad. Technician A believes that you must depress the quick take up valve. The brakes of large trucks are different. Technician A states that the parking brake is not fully released. A clogged fluid return hole in the master cylinder can cause all four wheels to drag, because the fluid sent to the wheels when you press the pedal can't return and let the pressure off. When performing a vacuum booster function test, you should begin by pumping the brake pedal several times _______________. B. b. Be careful with brake fluid; it is very corrosive when it gets on paint. The pressure can continue to build and the hose might expand, but not release the pressure to the brake units. Beginner's Guide: What is ABS (and How Does It Work)? Brake system to be inoperative It can also be due to a corroded or jammed caliper piston or a caliper that has corroded bushings or mounting pins. A. Any noises coming from your car may result in you ignoring the indicators. Excessive tire pressure b. What can cause this? Some vehicles have __________ openings in the backing plate to allow for manual adjustment of the brake shoes. c. Both A and B c. Both A and B When the brakes are applied, brake fluid is pumped from the master cylinder to the calipers in order to expand the caliper piston and slow the vehicle. B. Then, it's easier to empty once it's out. Chapter 45: Servicing Hydraulic Systems and P, Chapter 16 Activity: Reconstruction and Resis, Study for Chapter 11: Health and Wellness, Introduction to Chemical Engineering Thermodynamics, Hendrick Van Ness, J.M. Correct answer D-Both technicians are wrong because the problem is in the power booster. "Scratcher" and "sensor" are types of disc brake pad __________ indicators. Many times the cause of an accident will be due to a problem with the brakes. It's a vital component in your car; leave it to the pros. The ABS light doesn't go off after the engine starts. As a result, the car may exhibit a dragging sensation, since the brakes at the affected wheel are applied (or partially applied) at all times. You should put new pads on your Chevy and replace or repair the rotors. Question: I had problems with my brakes grinding and pulling to the right when braking. This site is owned/ operated by an authorized GM Genuine Parts/ACDelco Seller. There are many possible causes of this shaking, including the front rotors being warped, hot spots (slight irregularities) on your rotors caused by excessive heat, or pad impressions. The star adjuster should be adjusted one full turn to back the shoes away from the drum. Is this possible? a. with the engine off A vehicle has a very erratic brake pulling concern while applying the brakes. The brakes on quick take up systems use the exact bleeding procedure as systems without the valve. To get a sense of the scale of the energy, if we were to use this energy to create electron-positron pairs, approximately how many pairs could we create? Answer: You have a rear knocking noise from the drums because your shoes are being pulled away from the backing plate and snapped back into place by the spring clips. Technician B says the test involves checking the level of vacuum supplied by the engine or vacuum pump. Technician A is wrong because the parking brake would only affect the red brake light. Technician B believes there is an issue with the lateral runout of the rotor. For more information about ASE, visit the official ASE website at www.ase.com, Copyright 2008-2023 All Rights Reserved Privacy Policy Disclaimer Sitemap. C. Both technicians The mechanic is now telling me I need all of those parts replace again. Which of the following can cause brake pedal pulsation? This also reduces braking power. Low Brake Fluid:Your Chevymay develop a leak in the system that will result in the fluid level going down. Question: What makes a car's disc brakes drag hard after a 15-minute drive? a. Technician B says a defective wheel displays looseness or excessive play in the steering wheel especially while driving over rough road surfaces. Who is right? d. Air in hydraulic system. Glazed brake pads result from excessive heat. Poor stopping B. When I apply the brakes, especially downhill, I feel the brake pedal presses itself more than I do. Situations such as heavy loads or long downhill grades where the brakes are used heavily can lead to overheating of the lining, drums, or brake fluid, resulting in a loss of braking called: Which brake is used for holding a vehicle in place when its stationary? Brakes that Drag: Dragging brakes cause the brakes to wear out faster, and they can cause steering pull and tire wear. This can be due to oil, grease or fluid on a pad, a caliper that is stuck, brake line blockage, or wheel bearings that are loose. Sometime a misadjusted brake light switch can cause this, a blockage in a line, a frozen caliper slide pin, or a caliper piston will not more freely are all likely causes. auto tech review 3 Flashcards | Quizlet In the brake booster there is a washer that is suppose to keep the pushrod centered as it goes into the mastercylinder. A brake pad that is semi-metallic will be noisier than a non-asbestos or ceramic pad. d. Air in the hydraulic system. If your brakes squeak and you want to know why, maybe I can help! A vehicle with disc/drum brakes requires excessive brake pedal effort to stop. Continue scrolling to learn more about these common issues and their solutions. If it is too worn, you must replace it. c. Both A and B Pulsation results from something loose in the system or by an unparallel rotor. Glazing is more a problem with drum brake systems than disc systems because pads get more ventilation. Fluid pressure can bypass the twist during the application, but not return to the master cylinder after release. Which technician is most likely correct? 2320, what is the phase relationship between The steering wheel vibrates all the time and always veers to the left. Another uncommon cause of a soft pedal and long travel, is a bad wheel bearing, which is unrelated to the brakes except for being in the vicinity of the rotors. Ok, im starting a new thread because the problem is not an alignment problem anymore. Mechanical fade occurs when the brake drum gets so hot it expands away from the brake linings. This valve basically allows the rear drums to apply first in the system. Technician A is wrong because the proportioning valve only affects brake lockup and is not used on 4-wheel disc brakes only on disc/drum combinations. Check out the system to make sure that you do not have a caliper leak or an oil leak. 4-wheel disc brakes on a vehicle are causing brake squeal. Who is correct? One safe way to test whether a braking problem is at the front or rear brakes is to drive at a low speed and: (7.1.2) * low brake fluid All of the following can cause brake pedal pulsation, EXCEPT internal master cylinder leak All of the following can cause brake system dragging, EXCEPT fixed and sliding a. Technician A says to check for ABS or TCS (traction control system) diagnostic trouble codes. Who is correct? Technician B says that the wheel's direction of rotation should be verified by looking at the direction on the scan tool data list. Is it a caliper problem? Frank A5Brake Part A Hydraulic system - Chegg The wheel cylinder is attached to the ________. Rotors should be refinished when there is scoring, heat spots, lateral runout, pedal pulsations or thickness variation. This lubrication will help prevent a possible squeaky noise as the shoes move across the plate. Fluid will not run from the master cylinder while you remove it. Replace the brake linings Correct answer A-Air in the hydraulic system is the only choice that creates a spongy pedal. Answer: This means that you have a leak in the system and you most likely have air in the brake lines.

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