TM 9--2350--292--100005 00--13THEORY OF OPERATION -- CONTINUED0005 00SMOKE GRENADE LAUNCHER SYSTEM, M239DPushbutton Switches(Left and Right) (1) -- fires either the left side or right side pattern of smoke gre-nades by applying 28 V dc to the smoke grenade discharge tubes (4).DIndicatorLight (2) -- lights when smoke grenade launcher system is activated.DArmingSwitch (3) -- activates the smoke grenade launcher system by applying 28 V dc to the smokegrenade launcher indicator light (2) and pushbutton switches (1).DSmokeGrenadeDischargeTubes (4) -- located on the left and right front corners of the vehicle. Smokegrenades are loaded into each of the twelve barrels (six per side). When the pushbutton switch (1) ispressed, 28 V dc is applied to the smoke grenades to fire the propellant charge.24413
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