TM  1-1520-240-10            9-2-1 SECTION  II.  MISSION EQUIPMENT 9-2-1.  ARMAMENT 9-2-2.  Armament Subsystems — M24 and M41. WARNING Do not retract the bolt assembly immediately when a hangover or cook-off is suspected. A hangover will normally occur within 5 sec- onds from the time the primer is struck. A cook-off will normally occur after 10 seconds of contact with the chamber of a hot barrel. If  150  cartridges  are  fired  in  a  2-minute period,  the  barrel  will  be  hot  enough  to produce a cook-off. Misfire: F 1.   Weapon — Point at safe area. F 2.  Bolt — Retract, ensure cartridge ejects. F 3.   If cartridge does not eject — Perform reme- dial action IAW TM 9--1005-224-10. NOTE Keep cartridge separate from other ammuni- tion until it has been determined whether the cartridge or the firing mechanism was at fault, it  will  be  retained  separate  from  other  car- tridges  until  disposed  of.  If  examination  re- veals that the firing mechanism was at fault, the cartridge may be reloaded and fired. Runaway Gun: F Break the ammunition feed belt. 9-2-3.  Cargo. 9-2-4.  Jettisoning External Cargo. WARNING If  a  DUAL  HOOK  FAULT  caution  exists, normal and emergency release capability for the forward and aft hook may be lost. Use the manual emergency release sys- tem only. Primary Method: CARGO HOOK EMERG switch — REL ALL. Alternate Method: F Forward, center and aft hook release lever — Pull aft. NOTE If the forward and/or aft hooks did not open because of sling slack, apply a slight amount of thrust to load the hook(s) and force open. 9-2-5.  Hoist. WARNING Personnel must remain aft of the rescue hatch and face away from the cable cutter. The hoist cable may whip forward when it is cut and particles may be ejected from the cable cutter. 1.   Personnel — Clear. 2.   CABLE CUTTER switch — ON. 9-2-6.  ERFS II and FARE. 9-2-7.  Failure of Fuel Quantity Gauge. F Remove filler cap from filler opening and look into tank. Using a explosion proof flashlight or other sealed beam light source, locate fuel tabs which are attached to inside of column module at calibrated heights, increments of 1/4. 1/2, and 3/4. Any tab covered with fuel will normally not be visible. 9-2-8.   No or Slow Fuel Transfer to the Main Tanks. F 1.   Manually   operated   fuel/defuel   valve   — Check CLOSED. F 2.   Unisex couplings — Check. F 3.   Breakaway valves — Check open and for fracture. F 4.   Pumps — Check for operation. F 5.   Tank circuit breakers on FUEL CONTROL PANEL — Check reset in.   F 6.   Ensure vent lines connected. 9-2-9.  IN FLIGHT Emergency ERFS II Fuel Transfer to main Tanks. Using the FARE pump: F 1.   FARE pump module to rear most ERFS II tank — Install. F 2.   STA  380  fuel  transfer  hose  to  rear  most ERFS tank, fuel manifold hose — Discon- nect. F 3.   Rear most ERFS II tank fuel manifold cou- pling to FARE pump inlet (Top) coupling — Connect. F 4.   FARE pump module outlet (lower) coupling to STA 380 fuel transfer hose — Connect.