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ASE Transit Bus

H8 Transit Bus — PM Inspection — practice test

Studying for H8 (Transit Bus — PM Inspection)? Overhaul Prep has 173 verified H8 questions written to the current task list — in the same formats the real exam uses (direct, Technician A/B, EXCEPT and most-likely-cause). Every answer comes with a written explanation, so you learn why instead of memorising a letter.

173H8 questions
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9,711questions in total
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Sample H8 questions

Straight from the bank — answers highlighted, with the explanation underneath.

Tires on the non-steering (drive and tag/pusher) axles are placed out of service when tread depth falls below:

  1. 2/32 inch
  2. 4/32 inch
  3. 6/32 inch
  4. 5/32 inch
WhyNon-steering axle tires must have at least 2/32 inch of tread in a major groove; below that they are out of service.

Technician A says the spring (parking) brakes on an air-brake bus will automatically apply if system air pressure drops too low. Technician B says the low-air warning must come on before the spring brakes apply. Who is correct?

  1. Technician A only
  2. Technician B only
  3. Both Technicians A and B
  4. Neither Technician
WhyBoth are right: spring brakes apply on loss of air (typically 20-45 psi), and the low-air warning must activate earlier (at 55 psi or above) so the driver is warned before that happens.

A bus with air suspension sits low on one corner after sitting overnight but returns to normal height after driving briefly. The MOST likely cause is:

  1. A slow air leak at an air spring or fitting on that corner
  2. A worn U-joint
  3. A defective ABS wheel-speed sensor
  4. Low windshield washer fluid
WhyOvernight sag that self-corrects once the system re-pressurizes indicates a slow leak in that air spring or its plumbing; the height valve refills it when the compressor runs.

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