which of the following can cause brake system dragging which of the following can cause brake system dragging

Correct answer B-The greatest drawback of drum brakes is that they are susceptible to fade. Technician B believes there is an issue with the lateral runout of the rotor. You'll need to remove the caliper and inspect all moving parts to diagnose the problem. Technician A b. Excessive Brake Travel: If the brake linings are worn, the drum brakes are misadjusted or the brake lines have air in them, you will have this issue. b. Connect a hose to the caliper bleeder screw and insert the other end of the hose into a suitable container, open the bleeder screw, then use a C-clamp or pliers to slowly bottom the piston in the caliper Technician A says that all 3 channel ABS systems use only 3 wheel speed sensors. A. Correct answer B-Having a seized caliper piston leads to a high pedal. A only If you determine that you have a leak, check the calipers, hoses, lines, master cylinder and wheel cylinders for the leak. Question: I have a 99 Honda Civic EX. The lack of brake pedal free play on a vehicle might cause: Correct answer C-when there's no free play, the brakes can't disengage fully. This also reduces braking power. B. Brake rotors need to be refinished under all of these conditions EXCEPT: c. Both A and B Who is correct? Here are four common brake squeaks plus a bonus scraping noise; compare these situations to yours. If the coefficient of kinetic friction between the wheels and the pavement is k = 0.3, calculate the impulsive force on the wall if the brakes were applied during the crash.The brakes are applied to all four wheels so that all the wheels slip. They will need to be resurfaced. a. Correct answer C-Both techs are correct. One of the first components to engage goes by the name of the push rod. Auto Mechanical Practices Test; ASE Test Guide; Auto Mechanic Flash Cards; 2023 Edition. If it is, you should be able see the fluid on the carpet under your dash, just over your brake pedal. Doesnt seem real plausable to me but I'm running out of other ideas and parts to replace. A. Technician B says the cause is a faulty residual pressure check valve admitting air. Technician A says to check for ABS or TCS (traction control system) diagnostic trouble codes. If there is plenty of fluid in evidence, check if it is hot; repeated hard use, towing, descending a steep hill, or a dragging calipercan boil the fluid. Mechanical fading is when the drum gets too hot and expands away from the linings. Answer: There are a few options to look at here. They need to be replaced at once. Question: What if your car is going through brake fluid fast and your brakes don't want to work? Correct answer B-Disc brake squeal is caused by the brake pad moving while braking. It can also be due to a corroded or jammed caliper piston or a caliper that has corroded bushings or mounting pins. b. Question: My rear inner pads wear down faster than the outer ones. A rotor face must be within .0005 inch of being parallel and flat with no more than .003 inch of runout. Additionally, brake dragging can also be caused by frozen emergency brake cables as well as overextended self-adjusters. 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. What is the cause? Return Springs: Weak or broken return springs will result in brake drag. Brake pads are being replaced on a vehicle with four-wheel disc brakes. A only Correct answer C-The weak hydraulic brake hose causes a spongy pedal. Questions are welcome. A. Brakes on an older vehicle with a quick take up valve in the master cylinder are being bled. What can cause this? When the brake pedal gets soft or sinks to the floor, it's generally due to a leak in the braking system, most commonly the master cylinder leaking internally or externally. c. Leakage past the master cylinder cups b. Brake dust is best removed from brake components on the vehicle by using: If a retracting tool is not available, which of the following can be used to retract the pistons in a caliper with non-integrated parking brakes? Replacing the front strut 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. Brake pedal pulsation. Brake adjustment You can verify the wheel speed sensor operation while comparing the four-wheel outputs to the data list. Can you help me understand where the problems are and what I should repair or replace? Who is right? Check and make sure there is free play at the top of the brake pedal after driving and braking for a while, if there is no free play, something is out of adjustment. The wheel cylinder is attached to the ________. 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) *, All of the following can cause brake pedal pulsation, EXCEPT, All of the following can cause brake system dragging, EXCEPT. B only The ABS (antilock brake system) amber light does not go off after the engine is started. A only This drag happens with drum brake systems as the springs wear or become rusty. Binding pedal linkage would lead to a hard pedal, which is also true for a dented brake line. B only Correct answer D-Both technicians are wrong. This heat can be caused by a dragging brake unit. HubPages is a registered trademark of The Arena Platform, Inc. Other product and company names shown may be trademarks of their respective owners. A spongy brake pedal on a vehicle with 4-wheel disc brakes with a longer than normal travel indicates which of the following? Correct answer D-A seized caliper piston could cause the pedal to be high with reduced braking power. Technician A says the vacuum supply test involves inspecting the vacuum supply hose for kinks. c. Both A and B Question: Will a bad master cylinder cause the calipers to stick? It can also be a vacuum hose leak to the booster, or it can be a booster that is defective. The PCV valve vents the crankcase of blow by gases and isn't part of the braking system. How to Replace Honda Brake Pads: Tips and Precautions. Brake Squeal:A vibration between the pads and the calipers or the pads and the rotors can cause them to squeal. You can pump the brakes before application to help offset this problem, but you need to get it fixed. All of these would cause a low brake pedal, EXCEPT: Object B has initial momentum pB,i=4,6,0kg.m/s.\vec{p}_{B, i}=\langle 4,6,0\rangle kg. 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. d. Neither A nor B. c. Pressure differential switch The enzyme phosphoglucomutase interconverts glucose-111-phosphate and glucose-666-phosphate. Some vehicles have __________ openings in the backing plate to allow for manual adjustment of the brake shoes. c. Brinelling All modern cars come with sophisticated antilock braking systems (ABS) and brake based stability control, which complicates some aspects of troubleshooting and repair, but those systems will inform you when there is a problem and default to the old, simple system. Pulsation:This is the symptom of a brake rotor that has warped. 505050 Technician B says a defective wheel displays looseness or excessive play in the steering wheel especially while driving over rough road surfaces. d. Neither A nor B, A wheel speed sensor is being diagnosed using the OEM (original equipment manufacturer) diagnostic scan tool. A. If there is fluid, but it is below the full indication, that may indicate that the friction material on the pads or shoes,or the rotors or drums themselves, may be worn beyond effectiveness. d. Neither A nor B. What's up with that? C. Both Technicians A routine inspection would include all of the following EXCEPT. Checking your brakes at regular intervals is a goodpractice towards the maintenance of your Chevy. A only Is this a caliper or could it be a blockage in the brake hose? B. loosening the bleeder screw on the accumulator with the ignition switch on If you were to remove the line at the master cylinder and at the caliper, could you blow compressed air through it? In this article, I will explain the most common reason for a slipping automatic transmission and the most common reason for a slipping standard transmission. Technician B says the cause could be a stuck closed residual check valve in the hose from the intake manifold to the power brake booster. Another cause of a hard brake pedal can be a brake caliper that is stuck or seized. 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. Technician B says when this happens the brakes will operate like a normal non-ABS brake system. You need a scan tool to read the code. 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? When I apply the brakes, especially downhill, I feel the brake pedal presses itself more than I do. The technician believes there is most likely an issue with the hydraulic system. After that, fixing it is often easy with the help of your Haynes manual. Abnormal noise. B only 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. This leads to the brakes dragging. Answer: Most likely your caliper is defective, if it were the master it would most likely be more then one brake caliper sticking. You notice brake fluid in the engine. Sinking Pedal: You may notice this while sitting at a stop light. A brake pad that is semi-metallic will be noisier than a non-asbestos or ceramic pad. a. ABS Diagnostic Trouble Code set Technician A is wrong because excessive rotor runout will cause brake pulsations with no effect on wear. It will not be caused by lateral runout, which would cause brake chattering or pulsing. d. Neither A nor B. Technician B says that the wheel's direction of rotation should be verified by looking at the direction on the scan tool data list. Answer: Either the brake pads need to be replaced, or you could try shaving off the leading rear edge of the brake pad at a 45-degree angle and see if that helps. A hydroboost power brake vehicle with a hard pedal can be the result of a belt that is loose on the power steering pump, fluid levels are low, power hoses leak or there are valves with leaks or faults on the hydroboost unit. Many times the cause of an accident will be due to a problem with the brakes. How To Determine Cause of Brake Drag. Technician B believes that the brakes can't be bled. Correct answer C-New brake rotors don't need to be refinished. Then, it's easier to empty once it's out. Correct answer C-A short push rod length will have to travel farther for contact and result in excessive pedal travel. a. There are four types of brake fade. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. I changed the brake pads, but that didn't help much. Been there, done that! a. These records must include: (1) An identification of the vehicle including company number, if so marked, make, serial number, year, and tire size. In the brake booster there is a washer that is suppose to keep the pushrod centered as it goes into the mastercylinder. Answer: It is most likely either a blockage in the line or a worn brake master cylinder. 2320, what is the phase relationship between d. Repair leak and replace brake linings. c. Both A and B When I bled the lines, the driver side brake fluid wouldn't come down. . If your brake pedal feels squishy, "like stepping on a plum," and won't stop on the way down unless you pump it, or the brake pedal sinks to the floor with little or no resistance, you have a dangerous situation and should NOT drive any further! A only 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. In a similar vein, a pinched hard brake line, or a rubber line that has started to come apart internally can cause the same problem, though localized to one or two wheels. Smith, Michael Abbott, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. Check out the system to make sure that you do not have a caliper leak or an oil leak. A only Any brake booster (whether from Master Power or any other supplier) needs a vacuum source to operate. If you do, it could be a matter of minutes until you smash into something. Tech B says that the faster a vehicle moving, the more braking power is needed. c. Both A and B Glazing is more a problem with drum brake systems than disc systems because pads get more ventilation. Poor stopping c. with the vacuum hoses removed d. while driving the vehicle slowly. Technician B is wrong because backing off the castle nut will not cause the bearing to overheat. This article is accurate and true to the best of the authors knowledge. The drum brake adjuster is located under an access cover in the back of the drum brake. While these are the most common causes of brake issues on your Chevy, you should never allow your brakes to go bad. B. When you remove the master cylinder, you must take all these steps EXCEPT: Correct answer D-Draining the master cylinder isn't required. C. Both technicians B. The fix for this brake problem is simple: resurfacing the rotors, if they are still thick enough (see section 3 above), or replacing them if they are not. Brake systems contain all of these components EXCEPT: Correct answer B-Copper tubing should never be used within the brake system. Which of the following can cause brake system dragging? Opening or loosening any part of the hydraulic system is dangerous because of the fluid pressure. B. Brake hoses twist while replacing the caliper after a brake job resulting in brake drag at that unit. In a brake system with disc front and drum rear, there is a valve in the system known as a metering valve or hold-off valve. Intermodal equipment providers must maintain or cause to be maintained, records for each unit of intermodal equipment they tender or intend to tender to a motor carrier. D. Noticeable brake pulsation. This brake pulsation can be fixed very easily by having your rotors resurfaced (which is cheaper) or replaced (more expensive). variable hours is outside the range 0 through 80. Steering wheel shakes when brakes are applied. Who is correct? 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). b. with the engine running c. Both A and B Which of the following is the proper procedure? Correct answer C-An ABS with a high-pressure accumulator, you depressurize it by pumping the brake pedal 25 times while the ignition switch is off. The steering wheel vibrates all the time and always veers to the left. Which of the following would NOT cause a disc break to drag? The ABS light doesn't go off after the engine starts. You could add shims, use a brake noise aerosol, or brake grease to the backs of the pads to dampen the noise. c. Both A and B A only Bleed the brake lines as recommended by Chevy to fix this. Technician B Al+ClX2AlClX3. a. Technician A says you torque the adjusting nut to a specified torque and back off the nut till it lines up with the hole and install the cotter pin. Who is correct? When performing a vacuum booster function test, you should begin by pumping the brake pedal several times _______________.