TM-9-2350-277-10 Operator Manual M113A3 M577A3 M1064A3 M1068A3 M58 Download
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TM 9-2350-277-10 PREVENTIVE MAINTENANCE CHECKS AND SERVICES — Continued 0090 00 ITEM NO. INTERVAL MAN- HOUR ITEM TO BE CHECKED OR SERVICED C R E W M E M B E R PROCEDURE EQUIPMENT NOT READY/ AVAILABLE IF: 79 Weekly M17 Periscope C A U T I O N Handle periscope carefully during removal to avoid damaging the frame and glass of the periscope. NOTE There are no periscopes on the M577A3 and M1068A3 commander’s hatch. a. Remove periscope by loosening two thumbscrews. b. Check between carrier wall and periscope for dirt or moisture. Over 50% vision obstructed. THUMBSCREW THUMBSCREW M17 PERISCOPE 0090 00-113 Change 3