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Pre Trip – Low Pressure Warning Devices Test – School Bus Driver Academy

Low Pressure Warning Test

Inspect

  • Leave engine off
  • Slowly press and release service brake
  • Continue until warning devices activate
  • Warnings should activate before pressure drops to 55 psi

“I test the low pressure warning devices depressing and releasing the Service Brake.

“The warning devices, in this case an alarm and red light on the gauges, must activate before the pressure drops to 55 psi.“

Script