2-306.18 Change 4
TM 9-2350-267-20
CREW AUTOMATIC FIRE EXTINGUISHING SYSTEM
FIRE DETECTION TEST AND ALARM
FIRE EXT. LED’s ARE LIT. FAULT LAMP REMAINS ON.
PANEL INDICATORS
(EFFECTIVE FOR ALL VEHICLES)
Before troubleshooting AFES, check the following
1 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).
NOTE
l Instead of using multimeter for voltage check, STE/ICEtroubleshooting, INDIVIDUAL
BATTERY VOLTAGE TEST-TEST 89 may be performed.
l Instead of using multimeter for continuity check STE/ICE troubleshooting, TEST 91
may be performed.
NOTE
Vehicles S/N 1 thru 344 have four crew from extinguisher
cylinder bottles. Vehicles S/N 345 and above have six crew
from extinguisher cylinder bottles.
A. Inspect all electrical connectors for moisture, contamination, or loose fit. If
connections 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. Check
pressure gage of crew fire extinguisher cylinder bottles. Make sure black
needle is in green temperature wedge. If pressure gage needles are in correct
position 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, replace
crew 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 valve
actuator. Verify problem is solved.
