TM 9-2350-277-20-2PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS), INCLUDINGLUBRICATION INSTRUCTIONS — Continued0155 00ITEMNO.INTERVALMAN-HOURITEM TO BECHECKED ORSERVICEDCREWMEMBERPROCEDUREEQUIPMENTNOT READY/AVAILABLEIF:80Semi-AnnualCommander’sCupola(M113A3,M1064A3 andM1059A3)a. Replace cut, cracked, or hard cushioning pad.Replace vision blocks that have more than 50percent impairment (see your -10).b. Replace cracked or chipped vision blocks(WP 0490 00, WP 0491 00).c. Check for smooth rotation of commander’scupola. Replace bearings as required.d. For the M1059A3, check bracket and stop.Replace missing or broken parts.CUSHIONING PADVISION BLOCKS81Semi-AnnualData Plates,Decals, Stencils,and Markersa. Replace missing or damaged data plates, decals,stencils, and markers (WP 0654 00).015500-134
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