TM 9--2350--292--20--20373 00--1CHARGING BRAKE ACCUMULATOR0373 00THIS WORK PACKAGE COVERS:Connecting charging device, Checking precharge pressure, Charging accumulator,Disconnecting charging deviceINITIAL SETUP:Tools and Special ToolsGeneral mechanic’s tool kit (item 1, WP 0717 00)Temperature indicator (item 19, WP 0717 00)Nitrogen charging kit (item 20, WP 0717 00)Materials/PartsNitrogen (item 13, WP 0716 00)Equipment ConditionsVehicle parked on a level surface with tracks blockedand brakes released (TM 9--2350--292--10)Subfloor plates #15 and #18 removed (WP 0454 00)ReferencesTM 9--2350--292--10WARNINGHigh pressure nitrogen gas is used in this equipment.Keep face and hands away from valves and hose ends.Failure to do this could result in serious injury.Do not breathe nitrogen gas. Nitrogen gas can causedeath when inhaled.When charging the accumulator use only oil--free nitrogenper BB--N--411 Type 1, Class 1. Oil--free nitrogen tanksare marked with one or two black bands at the top of thetank. Do not use tanks without black band. Certain othertypes of gases will cause the accumulator to explode,resulting in possible death or injury.To ensure that no damage is done to the braking system,the accumulator must be charged to proper psi for thebraking system used in the vehicle. Maintenance person-nel must determine which type of braking system (oldconfiguration, new configuration or new configuration withbraking modulation) is contained in the vehicle. Then theappropriate Temperature vs. Pressure chart can be se-lected and the proper charging pressure determined.NOTESeveral types of charging devices are available for use incharging the accumulator. This procedure is based onone of those devices. If a different charging device isused, alter the instructions in this procedure as neces-sary.
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