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21-5.
CREW AFES CYLINDER BOTTLES REPLACEMENT.
This Task Covens:
a. Removal
b. Installation
Initial Setup:
Tools/Test Equipment:
Equipment Conditions:
Adjustable wrench (Item 3, Appendix 1)
l Left and right projectile rack assemblies
l General mechanic’s tool kit (Item 24,
moved to rear of vehicle (refer to TM 9-2350-287-10).
Appendix 1)
l Engine AFES deactivated (para 21-2).
l Crew AFES deactivated (para 21-3).
Materials/Parts:
l Cotter pin (as required) (Item 12, Appendix H)
a.
REMOVAL
WARNING
l Any automatic fire extinguishing system (AFES) unit in need of maintenance or
repair is more prone to accidental discharge. Accidental discharge could lead to
frostbite or other injury. Small parts or tools become dangerous projectiles when
propelled by HaIon discharging at 750 psi. Do not strike cylinder bottles with tools
and do not drop cylinder bottles. To prevent accidental discharge, be careful when
handling cylinder bottles.
The engine AFES is designed to provide from 2 to 4 hours of fire protection AFTER
vehicle shutdown. Turning off the master switch does NOT deactivate the AFES.
Working on the AFES when active may cause serious injury to personnel.
l Make sure Iocking pin has been installed in valve actuators of crew extinguisher
cylinder bottles Nos. 1, 2, 3, and 4 before attempting to remove cylinder bottle
assemblies. Failure to do so may result in injury or death to personnel.
l
l
NOTE
Crew AFES cylinder bottle assemblies Nos. 3 and 4 are connected to the manual
discharge system. If either of these bottles are being removed, perform steps 1
through 5. Crew AFES cylinder bottle assembly No. 3(1) is shown.
If crew AFES cylinder bottle assemblies Nos. 1, 2, 5, or 6 are being removed,
perform step 1, then go to step 6. Crew AFES cylinder bottle assembly No. 5(5) is
shown.
1.
Remove nozzles (15) from discharge ports of bottle assemblies (1,2,3, and 4) and extender (18) of cylinder
bottle assemblies (5 and 6) and replace with anti-recoil plugs (8).
2.
Remove four screws (22) and cover (21 ) from actuator assembly (1 9).
3.
Loosen two nuts (20) on top cable (13) for crewAFES cylinder bottle No. 3 (1) or two nuts (20) on middle cable
(13) for crew AFES cylinder bottle No. 4 (3).
21-12
TM 9-2350-287-20-2
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