Air Brakes and Train Handling Rules - Alaska Railroad

66 Locomotive Equipment and ComponentsWhiteAir Flow Pointer204060OFM80RedReference PointeAdjustable Knofor Reference PA F M INDICATORFigure 66-F. Air Flow Meter.66.7.1 Brake Pipe FlowA. Air Flow Meter ReadingsThe air flow meter provides the following brake pipe flow information:• As the brake system begins charging, a high flow into the brakepipe is indicated by:— Higher numbers (more than 60 CFM)or— The pointer moving to the right• As the brake system becomes charged, a lesser air flow into thebrake pipe is indicated by:— Lower numbers (less than 60 CFM)or— The pointer moving to the left• If the air flow meter shows a reading less than 60 CFM that isstabilized, the brake system is charged.June 1, 1996 ARRC Air Brakes and Train Handling Manual 66-11