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ASE School Bus

S5 School Bus — Suspension & Steering — practice test

Studying for S5 (School Bus — Suspension & Steering)? Overhaul Prep has 170 verified S5 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.

170S5 questions
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9,711questions in total
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Sample S5 questions

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

Which type of steering gear is used in the integral power steering unit of most heavy-duty school buses?

  1. Rack-and-pinion gear
  2. Recirculating-ball (worm and ball-nut) gear
  3. Manual worm-and-roller gear only
  4. Electric belt-drive gear
WhyHeavy trucks and buses use an integral recirculating-ball steering gear; the recirculating balls reduce friction between the worm shaft and the ball nut that drives the sector shaft. Rack-and-pinion is a light-vehicle design.

Technician A says an adjustable wheel bearing should first be torqued while rotating the wheel to seat the bearings, then backed off and re-tightened lightly. Technician B says the final result should be a slight measurable endplay, not preload. Who is correct?

  1. Technician A only
  2. Technician B only
  3. Both Technicians A and B
  4. Neither Technician
WhyThe TMC procedure seats the bearing under torque while rotating, then backs off and re-snugs to leave 0.001–0.005 in. endplay; both statements describe the correct method.

A steady growling/rumbling noise comes from one front wheel; it rises and falls with vehicle speed and is unaffected by braking. The MOST likely cause is:

  1. A worn or rough wheel bearing
  2. Low power steering fluid
  3. An out-of-adjustment steering gear
  4. A weak leaf spring
WhySpeed-sensitive rumble from one wheel that does not change with brake application points to a defective wheel bearing; brake-related noise would change when the brakes are applied.

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