TM 9-2350-287-20-1
2-6. AFES CHECKOUT (continued).
a.
1.
2.
3.
4.
5.
6.
b.
1.
2.
ENGINE AFES CHECK
WARNING
l Use caution when working near fire extinguisher nozzles. When nozzles discharge,
frostbite may occur to personnel, and small objects may become projectiles causing
SERIOUS INJURY or damage. Do not strike extinguisher with tools.
l AFES is designed to provide 2 to 4 hours of fire protection AFTER vehicle shutdown.
Turning MASTER switch to OFF does not deactivate AFES. Working on AFES when
active may cause serious injury to personnel.
Turn Maintenance switch on engine test and alarm (T/A) panel to AFES Maintenance position (para 21-
2). Make sure all lamps on T/A panel, including POWER ON lamp, are not illuminated.
Check to see that seven wiring harness connectors are secure (para 7-78). If not, apply sealing compound
and tighten connectors.
Check to see that fire-sensing wire in engine compartment is secure and that connections are tight.
Make sure locking pin is installed in valve actuator guard of engine extinguisher cylinder bottle no. 1 (para 21 -2).
Turn Maintenance switch on engine T/A panel to LAMP TEST. Verify that all four lamps and light-emitting
diodes (LEDs) light. Time permitting, perform engine AFES test (refer to TM 9-2350-287-10).
Set SYSTEM TEST/LAMP TEST switch on engine T/A panel to LAMP TEST. Verify that all four lamps and
LEDs light. Time permitting, perform engine AFES test (refer to TM 9-2350-287-10).
CREW AFES CHECK
WARNING
l Use caution when working near fire extinguisher nozzles. When nozzles discharge,
frostbite may occur to personnel, and small objects may become projectiles causing
SERIOUS INJURY or damage. Do not strike extinguisher with tools.
l AFES is designed to provide 2 to 4 hours of fire protection AFTER vehicle shutdown.
Turning MASTER switch to OFF does not deactivate AFES. Working on AFES when
active may cause serious injury to personnel.
Turn MAINTenance switch on crew T/A panel to vertical position (para 21-3). Make sure all lamps on T/A panel,
including POWER ON lamp, are not illuminated.
Check to see that connectors on three wiring harnesses are secure. Make sure keyways are alined, shells
are fully seated, and locking rings are fully rotated. If not secure, make sure optical fire sensing assemblies
(OFSAs) connectors snap in place. Loosen all other connectors, apply sealing compound, and tighten
loosened connectors.
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