TM 9-2350-247-10PREVENTIVE MAINTENANCE CHECKS AND SERVICES — Continued 0057 00ITEMNO.INTERVALMAN-HOURITEM TO BECHECKED ORSERVICEDCREWMEMBERPROCEDUREEQUIPMENTNOT READY/AVAILABLEIF:a. Raise spring clip up to uncover air inletopenings on the precleaner and particulate filterassembly. Turn NBC air filter switch oninstrument panel to ON. Pull filtered air hosedown from orifice connector assembly andcheck for air flow from each hose outlet. Checkprotective mask and microphone operation.b. Make sure spring clips are serviceable andpresent. Spring clips should be installed on thegas particulate filter unit (GPFU) when theGPFU is not in operation. Proper spring clipinstallation prevents water from damaging thefilters and blower motors.0057 00-76
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