Practice question

An auxiliary water pump (booster pump) on a school bus heating system is used for what purpose?

  1. To pressurize the air brake system
  2. To increase coolant circulation through long heater hose runs and rear/auxiliary heater cores
  3. To power the wheelchair lift
  4. To flash the warning lamps

Answer: B — To increase coolant circulation through long heater hose runs and rear/auxiliary heater cores

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