2003 US Army BRADLEY GUNNERY 503p.pdf - Survival Books

FM 3-22.1DANGERWHEN A MALFUNCTION OCCURS, ALWAYS PERFORMMISFIRE PROCEDURES BEFORE TAKING ANY OTHERCORRECTIVE ACTION.a. 25-mm Gun. If none of these steps corrects the malfunction, notify the mastergunner or maintenance personnel.(1) If the gun did not cycle, check the following:• Is the ARM-SAFE-RESET switch on SAFE?• Is the ammunition selected?(2) If the gun cycled to misfire, check the following:• Is the manual safety switch set to SAFE?• Is the tension released from the ammunition belt?• Is the gun out of ammunition?(3) If the gun cycled, but not to SEAR or MISFIRE, check for the following. Then,use the hand crank to manually cycle the gun back to SEAR, and try again:• Is the tension released from the ammunition belt?• Is the sear retractor out?• Is the straight drive shaft down?(4) If you cannot clear a weapons malfunction IAW the TM, then you must clear it byremoving the feeder and physically inspecting the chamber for unfired ammunition.(5) If the straight drive shaft has dropped after a malfunction, remove the feeder fromthe receiver and visually check the weapon for unfired ammunition.(6) The 25-mm ammunition can doublefeed if the protective nose caps are broken,cracked, or missing; or if a weapon stoppage occurs and is cleared improperly.b. M240C 7.62-mm Coaxial Machine Gun. If none of these steps corrects themalfunction, notify the master gunner or maintenance personnel.(1) If the bolt did not go forward, check the following:• Is the ARM-SAFE-RESET switch set to SAFE?• Is the manual safety switch set to SAFE?• Is the LO AMMO OVRD light flashing?• Is the coax solenoid plug connected?• Is the ammunition selected?(2) If the bolt did go forward, check the following:• Is the ammunition belt seated in the feed tray?• Is there a round or casing stuck in the chamber?• Is the machine gun out of ammunition?c. M257 Smoke Grenades. When smoke grenades fail to launch, performimmediate action, then—(1) Use the vehicle intercom system to tell the driver to move the vehicle to a safearea. Ensure the driver moves it at least 125 meters from the nearest vehicle, building,person, or equipment.(2) Move the grenade launch switch to ON.(3) Fire the smoke grenades.D-7