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Page Title: 21-6. ENGINE AFES TUBING AND NOZZLES REPLACEMENT
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TM 9-2350-287-20-2 21-6. ENGINE AFES TUBING AND NOZZLES REPLACEMENT. This task covers a.   Removal b.   Installation Initial Setup: TooIs/Test Equipment: Engine AFES deactivated (para 21-2). General mechanic’s tool kit Left and right projectile rack assemblies moved (Item 24, Appendix I) to rear of vehicle (refer to TM 9-2350-287-10) (for crew compartment procedure only). Materials/Parts: Power Pack removed (para 3-2) (for engine LockWasher (4) (Item 195, Appendix H) compartment procedure only). Preformed packing (2) (Item 222, Appendix H) Preformed packing (2) (Item 223, Appendix H) Equipment Conditions: Vehicle parked on level ground (refer to TM 9-2350-287-10). a. REMOVAL WARNING 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. CAUTION Do not bend tube assemblies when disconnecting them. If necessary, loosen tube assemblies at both ends before disconnecting them from elbows. l l NOTE Steps  1  through  6  cover  removal  of  engine  AFES  tubing  and  nozzles  in  crew compartment.  Steps  7  through  12  cover  removal  of  engine  AFES  tubing  and nozzles in engine compartment. Steps 1 through 3 may have been completed when engine AFES was deactivated. 21-16

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