TM 1-1270-476-304-1334-5. NIGHT SENSOR ASSEMBLY (NSA) REPAIR (cont)27. FOCUSING ASSEMBLY A31 REPLACMENTCAUTION• While performing this procedure, keep all exposed lenses covered with lens paper to prevent damage to coated optical surface.• Use of clean fingercots or rubber gloves and respirator are mandatory when handling optical assemblies and lens elements.REMOVALa. Remove focusing assembly A31 (1) by removing one long socket head capscrew (2), three short socket head capscrews (3), and four washers (4).b. Remove screw (5) and disconnect connectors W10P11 (6) and W10P12 (7) from connectors A31B1J1 and A31R1J2.INSTALLATIONc. Connect connectors W10P11 (6) and W10P12 (7) to connectors A31B1J1 and A31R1J2 and secure with screw (5).d. Install focusing assembly A31 (1) on NSA using one long socket head capscrew (2), three short socket head capscrews (3), and four washers (4).END OF TASK
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