ASE A5 Brakes Practice Test

26. Technician A says if a ridge has formed on the backing plate's pads where the brake shoes rest, they may be filed to restore a smooth finish. Technician B says to apply bearing grease to reduce brake squeak. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

26.

Answer A is correct. The shoe pads on the backing plate can become scuffed and grooved as the shoes move back and forth on its surface. These pads can be sanded or filed smooth to restore surface integrity.

Answer B is wrong. Avoid petroleum-based greases that can swell rubber parts and chassis greases that burn off and evaporate.

Answer C is wrong. Always use the proper high-temperature grease between the backing plate and the shoe.

Answer D is wrong. Technician A is correct.

27. Technician A says an improperly adjusted master cylinder pushrod could result in a low brake pedal. Technician B says overheated brake fluid causes a low spongy brake pedal. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

27.

Answer A is wrong. An under-adjusted brake pedal results in a low pedal.

Answer B is wrong. Excessive heat damages brake fluid resulting in a spongy or low brake pedal.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.

28. Technician A says that air in the ABS hydraulic modulator valve assembly results in a low brake pedal. Technician B says a faulty master cylinder can result in a low brake pedal. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

28.

Answer A is wrong. Both Technicians are correct.

Answer B is wrong. Both Technicians are correct.

Answer C is correct. Air trapped in the brake system will result in a low brake pedal. This is because the air is compressible.

Answer D is wrong. Both Technicians are correct.

29. Technician A says to adjust a height sensing proportioning valve while on the lift. Technician B says to adjust a height sensing proportioning valve at vehicle curb ride height. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

29.

Answer A is wrong. Adjusting a height sensing proportioning valve on the lift would reduce hydraulic pressure to the rear brakes.

Answer B is correct. Adjust a height sensing proportioning valve at curb height with all four tires firm on the ground. Adjusting this type of proportioning valve on a lift would reduce rear brake performance.

Answer C is wrong. Technician B is correct.

Answer D is wrong. Technician B is correct.

30. The ABS warning light is illuminated, and the LF wheel speed sensor's tip and reluctor ring are damaged. Technician A says to check the wheel bearing for looseness. Technician B says an insufficient gap may have caused this damage. Who is correct?

  • A. Technician A
  • B. Technician B
  • C. Both A and B
  • D. Neither A or B

30.

Answer A is wrong. Loose wheel bearings can cause the sensor's ring to wobble. Look for damage and debris when inspecting the wheel speed sensor.

Answer B is wrong. Sensor adjustments are rare; most mount to the spindle with a small bolt. Mud or road debris can get into the gap or between the tone sprockets creating a problem with the signal.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.