It will also have a fault code related to the loss of boost. . Tips and precautions to use when replacing your brake pads, so you can get quality results on a Honda or any other vehicle. d. Steering gear problem. The rotor needs to be measured at the thinnest point with a micrometer or vernier caliper to determine whether it can be resurfaced or not. Technician A states that the parking brake is not fully released. Binding pedal linkage would lead to a hard pedal, which is also true for a dented brake line. B. 200MeV200 \mathrm{MeV}200MeV is typical energy released in a fission reaction. After the collision, object A is observed to have final momentum pA,f=13,3,0kgm/s.\vec{p}_{A, f}=\langle 13,3,0\rangle \mathrm{kg} \cdot \mathrm{m} / \mathrm{s}.pA,f=13,3,0kgm/s. The other three answers wouldn't cause the same issues. Technician A says that when reassembling a duo-servo brake, the backing plate pads should be lubricated. A soft brake pedal is a MAJOR brake issue. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Scraping Brakes:Metal-to-metal sounds mean that the pads or shoes are worn out. Technician A says a defective proportioning valve could be the cause. Brake fluid reservoir. measure the pad-to-caliper piston clearance. The way to prevent these issues is to avoid driving in deep puddles, or areas where salt is used on the roads, but if that isn't an option, be sure to clean the wheels and underside of the car often in winter. 7 Symptoms of a Brake Caliper Sticking (and Common Causes) Answer: Is your abs light on? Using the screwdriver, gently pry out the rubber grommet that protects this access cover. A. Correct answer A-You torque an adjusting nut to a specified torque and back off the nut till it lines up with the hole and install the cotter pin. d. Neither A nor B, A wheel speed sensor is being diagnosed using the OEM (original equipment manufacturer) diagnostic scan tool. One of the first symptoms of bad or failing drum brakes is unusual brake pedal feel. A properly working booster will make it easier to hold the pedal and may even slightly depress the pedal by itself. It's possible that a blocked brake caliper or brake drum is to blame for that dragging sound your automobile is making. If your whole car shakes when your brakes are applied, it could be just your rear brakes. It will lead to increased tire wear. Brake rotors need to be refinished under all of these conditions EXCEPT: Question: I had problems with my brakes grinding and pulling to the right when braking. Replacing the front strut Brake hoses twist while replacing the caliper after a brake job resulting in brake drag at that unit. eCFR :: 49 CFR Part 396 -- Inspection, Repair, and Maintenance HubPages is a registered trademark of The Arena Platform, Inc. Other product and company names shown may be trademarks of their respective owners. Correct answer B-Insufficient clearance between the pads and caliper slider causes the slider not to move and only applies one brake pad causing only that pad to wear. c. Both A and B Dragging brakes must be repaired because it results in overheated parts and possible damage to the brake system. The star adjuster should be adjusted until there is a slight drag on the drum. Who is correct? Brake Problems Caused By Fluid Contamination Any noises coming from your car may result in you ignoring the indicators. Answer: The first thing you need to do is remove all four wheels and inspect all caliper slide pins, pistons, and brake pads and shoes. b. Most braking systems work on a diagonal braking design for safety reasons; that is, the left front and right rear brakes work together and so do the right front and left rear. 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. _____ Slows a vehicle by converting the vehicle's kinetic energy into electrical energy. b. What can cause brake drag, rear wheel lock up, or front wheel lockup upon breaking? b. Who is correct? Brake problems can be daunting if you don't know what's causing them. Which is the correct way to service these brakes? Within disc brake calipers, the pistons are sealed by a: Which of the following take(s) up the clearance as disc brake pads wear? Answer: The most likely cause is a caliper sticking, either it's the piston or slide pins. c. Clean with approved cleaner and reuse d. Seized caliper piston. Question: My Chevrolet 2006 has some braking problems. Technician A believes it's a defective proportioning valve issue. Correct answer C-Both technicians are correct. Answer: It sounds like you may have an ABS sensor not reading properly or maybe a damaged ABS sensor wire? brakes midterm Flashcards - Cram.com If you see the Brake Warning Light illuminated, it is probably a leak. This braking problem can be caused by several different things, even the tires (see below), but the most common cause is a frozen caliper. To further reduce noise, do not machine a disc brake rotor more than absolutely necessary. Brake hydraulics are a sealed system, so there should not be air in the lines, but if after service you have a sponge pedal that is the most likely cause. tech B states that the brake-by-wire system uses the break pedal position and pedal application speed as indicators of what the drive wants to do. Correct answer A-Air in the hydraulic system is the only choice that creates a spongy pedal. d. Repacking a front wheel bearing, Technician A says a defective wheel or axle bearing can make a growling or rumbling noise. What's more, I'll teach you to fix it in either case. c. Both A and B d. Neither A nor B. c. Both A and B ASE PRETEST QUIZLET Flashcards | Quizlet Brake Pull: Uneven braking means that you have one front brake on your Chevy that is not operating properly. It's possible your ABS module is no good. 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. Question: The brakes on my new O4 Ford Explorer are dragging. Why is this? Brake systems contain all of these components EXCEPT: Correct answer B-Copper tubing should never be used within the brake system. Regardless, I recommend having a thorough brake inspection by an experienced mechanic. One way a caliper can freeze up is by the piston on the caliper being stuck in its bore. As a rule of thumb, shaking caused by a problem in the front end of the car will be felt in the steering wheel, while shaking in the rear will seem to affect the whole car. If the brake fluid reservoir is full and there are no signs of leaks, the problem is usually an internal problem that you cant identify just by looking at the master cylinder. c. Both A and B The vacuum booster can be checked by pumping the pedal a few times while the engine is off. Brake failure is common if the fluid leaks out of the system. The effectiveness of braking is mostly determined by: Tech A says that the heavier the vehicle, the more stopping power is needed. Who is right? If the slide pins are your problem, they need to be cleaned and lubricated or replaced. Typically a seized caliper or pads will cause a burning smell, a pull to one side, and dragging at one wheel, but it is possible for it to stick without those, and effectively lessening your braking by nearly half (if it is a front wheel, which provide 75% of the braking). c. Both A and B d. Air in hydraulic system. Modern cars use a power assist (vacuum or otherwise) hydraulic system, with disc brakes on the front wheels, and discs or drums on the back. This leads to the brakes dragging. c. Both A and B Which of the following can cause brake system dragging? A. B only Another possibility is that the pistons got bent, during a brake job or a car accident, and can't move freely anymore, causing the caliper to bind and limiting the amount of pressure to the pads. d. Neither A nor B. You also want to use OEM clips and anti-squeal shims. A spongy brake pedal on a vehicle with 4-wheel disc brakes with a longer than normal travel indicates which of the following? Brake adjustment Technician B Which of the following can cause brake pedal pulsation? Fluid will not run from the master cylinder while you remove it. Failure of lateral runout or thickness variation checks If the brake drums are worn excessively they can cause vibrations that may be felt in the pedal. Technician B D. Noticeable brake pulsation. When that happens, I release the brakes and apply them again super fast. This site is owned/ operated by an authorized GM Genuine Parts/ACDelco Seller. A. b. with the engine running A) Internal master cylinder leak B) Warped rotors C) Both A and B D) None of the above None of the above 4-wheel disc brakes on a vehicle are causing brake squeal. C. Dragging brakes The brakes can fail if your hydraulic system or master cylinder is leaking. d. Air in the hydraulic system. Steering wheel shakes when brakes are applied. Correct answer A-Technician A is right because if the master cylinder pushrod is too short that will be a delay in application. Answer: I don't think it has anything to do with the brake, try starting it without doing that and see what happens. The tires' contact surfaces expand when you brake, thus putting more pressure on the bad tire and causing the pull to worsen. Loose wheel bearing Excessive tire pressure If you dont find your issue here, check out my article on brake noises, look through the comments at the end, or leave a comment yourself telling your story. Who is correct? b. It's good to understand what the cause of your problem might be before a mechanic starts talking about the need to replace this or that. Who is right? The system reverts to regular brake operation without ABS. A car that pulls to one side can be annoying and also dangerous. This article is accurate and true to the best of the authors knowledge. DOT 5 Tech A says that quick take-up master cylinders use two additional pistons to move brake fluid faster. Master Cylinder: An incorrect brake pedal adjustment can cause brake drag. Sometimes, though not very often, the brakes won't work, and it sounds like it's grinding for one or two seconds. Object A has mass mA=7kgm_{A}=7 \mathrm{kg}mA=7kg and initial momentum pA,i=17,5,0kgm/s,\vec{p}_{A, i}=\langle 17,-5,0\rangle \mathrm{kg} \cdot \mathrm{m} / \mathrm{s},pA,i=17,5,0kgm/s, just before it strikes object B, which has mass mB=11kg.m_{B}=11 \mathrm{kg}.mB=11kg. This brake pulsation can be fixed very easily by having your rotors resurfaced (which is cheaper) or replaced (more expensive). If you determine that you have a leak, check the calipers, hoses, lines, master cylinder and wheel cylinders for the leak. Then, it should be backed off until there's a drag on the wheel. 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. The correct answer is C. Of the choices given, only an out-of-round brake drum can cause pulsation in a hydraulic brake system. If you do either of these processes, and your brake pads are more than half worn, its worth it to just replace the pads at the same time for the peace of mind it will give you; pads wear out frequently (they are a consumable item) and you might as well deal with them while in the neighborhood. Technician A says to check the TCS and ABS diagnostic trouble codes. Question: What if your car is going through brake fluid fast and your brakes don't want to work? Correct answer D-Both technicians are wrong because the problem is in the power booster. Are they safe? However, there are shims on the brake pads which can get caught in these grooves from built up debris that may be there. What could be the cause of the problem? The ABS warning light usually comes on when there is this type of problem. If you were to remove the line at the master cylinder and at the caliper, could you blow compressed air through it? B only Correct answer C-Brinelling is defined as indentations in the race caused by impact loads or vibrations. 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? c. with the vacuum hoses removed A only How To Determine Cause of Brake Drag - Ford Truck Enthusiasts Forums The other situations wouldn't be caused by the lack of free play. Technician A says the yaw rate and deceleration sensor should be recalibrated. Correct answer B-If the amber light is on it indicates an ABS fault and the system will revert to regular brake operation without ABS. The other choices will not do this. b. Wash in hot, soapy water and dry. ASE A4 Practice Test. The steering wheel vibrates all the time and always veers to the left. To put this discussion about brake proportioning valves in context, there are actually three basic kinds of valves in play in a non-ABS system. Next, hold your foot to the pedal while starting the engine. Correct answer B-Having a seized caliper piston leads to a high pedal. On ABS systems that have a high-pressure accumulator, this is depressurized by: d. Repair leak and replace brake linings. Poor stopping In Fig. Low Brake Fluid:Your Chevymay develop a leak in the system that will result in the fluid level going down. Worn drums may also cause shuddering or pulsating that will become noticeable once you step on the pedal. If you are trying to bring a project car back to life, but can't get it to roll, chances are this is the problem. Symptoms of a Bad or Failing Brake Hose | YourMechanic Advice a. C. Both technicians a. Technician B says air trapped in the hydraulic system could be the cause. Excessive Push Rod Length The brake system in your car contains numerous components, each of which plays a distinct role in braking. Continue with Recommended Cookies. Find out what these noises mean and what might fix them. Light trucks and vans were mandated to be equipped with center high mount stop lamps in: A regenerative braking system uses_____to slow the vehicle during braking. B only Checking your brakes at regular intervals is a goodpractice towards the maintenance of your Chevy.