2-306.18 Change 4TM 9-2350-267-20CREW AUTOMATIC FIRE EXTINGUISHING SYSTEMFIRE DETECTION TEST AND ALARMFIRE EXT. LED’s ARE LIT. FAULT LAMP REMAINS ON.PANEL INDICATORS(EFFECTIVE FOR ALL VEHICLES)Before troubleshooting AFES, check the following1 Make sure MASTER switch is set to OFF (TM 9-2350-267-10).2 Left and right projectile rack assembles moved to rear of vehicle (TM 9-2350-267-10).2 Make sure crew AFES T/A panel Maintenance switch is turned to maintenance position(p 14-14.5).NOTEl Instead of using multimeter for voltage check, STE/ICEtroubleshooting, INDIVIDUALBATTERY VOLTAGE TEST-TEST 89 may be performed.l Instead of using multimeter for continuity check STE/ICE troubleshooting, TEST 91may be performed.NOTEVehicles S/N 1 thru 344 have four crew from extinguishercylinder bottles. Vehicles S/N 345 and above have six crewfrom extinguisher cylinder bottles.A. Inspect all electrical connectors for moisture, contamination, or loose fit. Ifconnections are dirty, wet, or loose, clean connectors with cleaning compound,apply sealing compound, then reinstall. Verify problem is solved. If connec-tions are ok, go to step B.B Check for protruding flow indicator on valve actuators of crew fire extin-guisher cylinder bottles as indicated by LED’s on crew T/A panel. Checkpressure gage of crew fire extinguisher cylinder bottles. Make sure blackneedle is in green temperature wedge. If pressure gage needles are in correctposition and flow indicators are not protruding, go to step C (S/N 1 thru 344)or step D (S/N 345 and above). If any needle indicates low pressure, replacecrew fire extinguisher cylinder bottle (p 14-28.3). Verify problem is solved.If flow indicator is protruding, reset flow indicator by pushing it into the valveactuator. Verify problem is solved.
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