TM 9-2350-247-20-1PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDINGLUBRICATION INSTRUCTIONS — Continued0128 00ITEMNO.INTERVALMAN-HOURITEM TO BECHECKED ORSERVICEDCREWMEMBERPROCEDUREEQUIPMENTNOT READY/AVAILABLEIF:30Semi-AnnualBatteriesWARNINGBefore you connect or remove batterycables, ventilate battery compartment.Always disconnect the battery negativelead(s) first and connect it last. Don’tcause sparks. Hydrogen explosions cancause serious injury. Battery acid canblind or burn you. Do not get acid on yourskin or in your eyes.WARNINGBattery posts and cables touched by metalobjects can short circuit and burn orinjure you. Use caution when you workwith tools and other metal objects. Do notwear jewelry when you work on electricalsystem.Electrical current can burn you. Removeboth battery negative leads before youstart task (WP 0292 00).NOTEM548A1 carriers have two batteries.M548A3 has four batteries.0128 00-40
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