TM 9--2350--292--20--10187 00--1230187 00PREVENTIVE MAINTENANCE CHECKS AND SERVICES INCLUDINGLUBRICATION INSTRUCTIONS -- CONTINUEDTABLE 3 PREVENTIVE MAINTENANCE CHECKS AND SERVICESINCLUDING LUBRICATION INSTRUCTIONS, SEMIANNUALLY -- CONTINUEDITEMNO.NOT FULLYMISSIONCAPABLEIF:PROCEDURELOCATIONITEM TOCHECK/SERVICEINTERVALSEMIANNUALLYEXTERIOR37Smoke GrenadeLauncherSystem M239WARNINGBefore performing checks onsmoke grenade launcher system,visually confirm that no smokegrenades are in launcher tubes.Failure to comply may result in se-vere injury or death to personnel.a. Check tightness of all connectors (1).b. Inspect condition of cables (2) forfraying, broken wires and for tightness offit in connectors (1).c. Check spring return action ofpushbutton firing switches (3 and 4)switching action of power (arming) switchassembly (5).dCheck light bulb (6) in power (arming)Any looseconnectors,cracked orfrayingcables; anyinoperativeswitches;burned outlamp..switch assembly (5).123456
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