which of the following can cause brake system dragging

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. The brakes can fail if your hydraulic system or master cylinder is leaking. Who is right? b. Wash in hot, soapy water and dry. ASE identifies suspension both . Technician A This leads to excessive pedal travel. Answer: It is most likely either a blockage in the line or a worn brake master cylinder. There are different causes for brake drag. Which of these can lead to brake pedal fade? B only ASE A4 Practice Test (Updated 2023) | Chapter 38 Test.docx - 5 / 5 "Scratcher" and "sensor" are types of disc brake pad __________ indicators. Here are five of the most common brake problems in cars. Electric Vehicle Research Paper Correct answer B-The short push rod length has to travel farther to make contact. c. Both A and B 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. Abnormal noise. Troubleshooting A Hard Brake Pedal | Classic Car Restoration Club Meanwhile, pull up on the handle just enough to feel the rear brakes grab slightly. Or it's possible your brake booster push rod is out of adjustment. Who is correct? Which of the following could cause a pulsating brake pedal on a truck with hydraulic brakes? 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. Troubleshooting: Common Brake Issues and Causes 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. B only Another cause of a hard brake pedal can be a brake caliper that is stuck or seized. The failing bearing allows the hub to move around, effectively pushing the brake pads back into the caliper as far as it can. This also reduces braking power. Technician A says the vacuum supply test involves inspecting the vacuum supply hose for kinks. B only d. Neither A nor B. 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. ASE A4 Practice Test. 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. Poor stopping This delay causes the spongy feel. Turn the star-shaped adjuster a few times. Slight scoring or heat spots To reduce this, the mating surfaces need to be cleaned and lubricated. In the following questions, "initial" refers to values before the collisions, and "final" refers to values after the collision. 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! c. Both A and B Who is correct? A only The consent submitted will only be used for data processing originating from this website. Technician A The two main types of disc brake calipers are: The disc brake caliper is attached to the, Sliding calipers have pistons that are positioned on, bleed air or vacuum from the power booster, Brake bleeder screws enable all of the following tasks to be performed EXCEPT. If the vehicle has low or uneven tire pressure, there might be a pull. A slow descent of the brake pedal means that the pressure is leaking out of the master cylinder. Brake drag is caused by the brake pads or shoes not releasing completely when the brake pedal is released. A hydraulic system uses the incompressible nature of fluid to transfer force from your brake pedal all the way to your brake caliper, causing it to close around the rotor and slow the momentum of your wheel. Technician B says backing off the castle nut will cause the bearing to overheat. Who is right? I highly recommend having your car towed; this is a very dangerous situation, and the problem needs to be fixed before the car is driven. To further reduce noise, do not machine a disc brake rotor more than absolutely necessary. It also expands when subjected to high pressures. On a bearing that has been shock loaded, the race (cup) of the bearing can be dented. 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 Here is the list of possible causes: Service and parking brake adjustment Rear brake hardware Shoe lands or bosses GM clip in wheel cylinders Brake drum condition Brake shoe contamination Brake valving Friction material Second, it can act like a check valve. 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. C. Dragging brakes auto tech review 3 Flashcards | Quizlet Replacing the front strut How To: Diagnose and Fix Brake Drag - mpbrakes.com C. Both technicians An intermittent noise when braking lightly, as in the video below, could also be related to an uneven surface on the rotors. I put new calipers, rotors and rubber lines on a couple of months ago and now the calipers stick sometimes. On some vehicles, disc brakes are equipped with a steel scratcher that: Brake pad wear indicators may be either mechanical or: Which tool is used to measure the useful life of brake linings? The common cause of this is a broken or weak retracting spring on drum brakes, corroded or jammed caliper piston, corroded mounting pins or the bushings on a floating caliper, the drum brake self-adjusters are overextended or there is an emergency brake cable that is sticking or is frozen in place. As in: hit the brakes, let go, brake pedal comes back up, master cylinder side piston doesnt came all the way back and keeps pressure on the master. 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. b. Proportioning valve A pull when braking may also have nothing to do with brakes. Correct answer A-Excessive tire pressure is the exception because this fault will cause tire wear but not a pull. Symptoms of a Bad or Failing Brake Drum | YourMechanic Advice Correct answer D-A restricted disc brake caliper hose won't cause pedal pulsation. Technician B believes that the brakes can't be bled. The correct answer is C. Of the choices given, only an out-of-round brake drum can cause pulsation in a hydraulic brake system. What could be the issue? Why is there a rear knocking noise from the drums when applying the brakes? variable hours is outside the range 0 through 80. How to Adjust Drum Brakes | YourMechanic Advice The wheel cylinder is attached to the ________. Note: I dont recommend pulling up on the emergency brake handle at high speeds, it can cause your rear brakes to lock up and send the vehicle into a spin causing death or serious injury! If you determine that you have a leak, check the calipers, hoses, lines, master cylinder and wheel cylinders for the leak. d. Steering gear problem. D. Neither technician. Your brakes pull to the good side. Which of the following would NOT cause a disc break to drag? I recommend having all the brake lines, calipers, and the master cylinder checked for leaks. Replacing your tires will fix this, or you could try rotating your front tires to the rear of the vehicle. Who is correct? a. The ABS and TRACTION OFF indicator lights stay on while the engine is running. You'll need to remove the caliper and inspect all moving parts to diagnose the problem. 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. Brake rotors need to be refinished under all of these conditions EXCEPT: Technician B says the cause is a faulty residual pressure check valve admitting air. You could also have a ballooning brake hose when the brakes are applied. 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). a. 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? Should I drive my car? d. Neither A nor B. While starting the engine with the brakes applied, the pedal does not go down slightly. There is also typically a separate, mechanical parking/emergency brake, either cable or electrically operated, that works only on the rear wheels. B. Question: Does an emergency brake in a car not work after an accident? What could be the cause of the problem? 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. b. b. c. Both A and B b. VAV_\text{A}VA and I2I_2I2? A drum or rotor that has deep scores in it will cause the brakes to grab. The pressure can continue to build and the hose might expand, but not release the pressure to the brake units. Technician B believes it's caused by movement of the brake pad while breaking. The suspension additionally steering service area involves the following components: Steering system, Suspension system, Wheel Alignment and Wheel and Tires Service Log. b. Regardless, I recommend having a thorough brake inspection by an experienced mechanic. Correct answer B-Disc brake squeal is often caused by movement of the disc brake pad during braking. Question: Will a bad master cylinder cause the calipers to stick? Now I have loud grinding sounds coming from the front left tire. b. 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. Hard Pedal: You may have a loss of power assist because the engine vacuum is low. c. Both A and B They will need to be resurfaced. That's why the power assist begins to function properly after the engine runs. Wearing your pads down to the metal baking plates will also result in a very "wooden" brake pedal as well, as there is not as much friction when it is metal on metal, and they have to clamp harder to slow you down; the horrible grinding noise is usually an indication before the hard pedal. b. Answer: I recommend checking the brake light switch, it may be out of adjustment and applying a little pressure to the brake pedal. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. What is the cause? Always use OEM recommended clips and anti-squeal shims.

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