TM 9--2350--292--10VISION DEVICES MAINTENANCE0114 00THIS WORK PACKAGE COVERS:Care and Handling of Vision Devices, Cleaning Vision Device Lens, M17 Periscope ReplacementINITIAL SETUP:Materials/PartsPaper, lens tissue (item 35, WP 0130 00)Personnel RequiredThreeReferencesTM 11--5855--249--10WP 0130 00CARE AND HANDLING OF VISION DEVICES1. For care and handling of passive night viewer AN/VVS--2(V)1A see TM 11--5855--249--10.2. Vision devices are generally rugged, but mishandling will result in damage to the equipment.3. Touch up scratched or chipped areas that expose bare metal. Never paint the whole device.CLEANING VISION DEVICE LENS1. Keep lenses clean and dry. Proper care will ensure good vision. See step (4).2. It is prohibited to clean lenses and windows with liquid, pastes or abrasives.3. Use lens tissues (item 35, WP 0130 00) only to wipe lenses and windows.4. Keep lenses free of oil or grease. Do not touch lenses or windows with fingers. Use alcohol on lens tissue toremove grease or oil. If no alcohol is available, use lens tissue.M17 PERISCOPE REPLACEMENT1. Loosen wing nut (1) and turn retainers (2) until they clear periscope (3).2. Pull down on periscope (3) to remove it from recess.3. Insert periscopes (3) into recess and push it into place.4. Turn retainers (2) until they contact the periscope (3) and tighten wing nuts (1).123END OF TASK0114 00--1/2 blank
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