Practice question

On a full-floating drive axle used in a heavier school bus, the axle shaft primarily:

  1. Carries the entire vehicle weight by itself
  2. Cools the differential
  3. Transmits driving torque while the wheel hub is supported by bearings on the axle housing
  4. Stores hydraulic pressure

Answer: C — Transmits driving torque while the wheel hub is supported by bearings on the axle housing

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