ASE A5 Brakes Practice Test

26. Two technicians are discussing brake backing plates. Technician A says if a ridge has formed on the pads where the 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 ridge often formed by the movement of the brake shoe may be filed smooth.

Answer B is wrong. It's important to use high temperature grease between the backing plate and the shoe.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is correct.

27. A vehicle has a low brake pedal. Technician A says an improperly adjusted brake pedal could be the cause. Technician B says overheated brake fluid could cause this condition. Who is correct?

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

27.

Answer A is wrong. Both Technicians are correct.

Answer B is wrong. Both Technicians are correct.

Answer C is correct. An under-adjusted brake pedal will cause a low brake pedal. Excessive heat damages brake fluid resulting in a spongy or low brake pedal.

Answer D is wrong. Both Technicians are correct.

28. A technician is lubricating rubber brake components while performing a brake job. Technician A says to use a high temperature silicon based lubricant. Technician B says to use a good petroleum based lubricant. Who is correct?

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

28.

Answer A is correct. Use high temperature silicon based lubricant that does not contain petroleum.

Answer B is wrong. Petroleum based products can cause swelling resulting in brake unit failure.

Answer C is wrong. Technician A is correct.

Answer D is wrong. Technician A is 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

30.

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 on a vehicle. The LF wheel speed sensor’s tip and tone 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. Both technicians are correct. Loose wheel bearings can cause the sensor's ring to wobble. These may be mounted on CV joints on front axles. They fit into and fasten to the inner bearing race. Look for damage and debris when inspecting the wheel speed sensor.

Answer B is wrong. Adjustments are rare, most just mount to the spindle with a small bolt.

Answer C is correct. Both technicians are correct.

Answer D is wrong. Both technicians are correct.