TM-9-1200-215-34&P Technical Manual for M109 Automatic Fire Control System (AFCS) Download
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TM 9–1200–215–34&P 4–7 4–13. TOP COVER ASSEMBL Y, BOTTOM COVER, AND PREFORMED P ACKING DESCRIPTION This task covers: a. Removal b. Inspection c. Installation d. Test INITIAL SETUP Tools: Tool Kit, JTK–17LAL (item 34, Appendix E) Tool Kit, General Mechanic’s (item 42, Appendix E) Work Station Kit, ESD (item 38, Appendix E) Materials/Parts: Cleaning Cloth (item 13, Appendix D) Thread Compound (item 14, Appendix D) Preformed Packing (item 4, Appendix F) Equipment Condition: Unenergized PDIU on workbench Personnel Required: One MOS 35Y a. REMOVAL CAUTION ESD SENSITIVE • The PDIU contains ESD sensitive components. Wear a protective ESD wrist strap whenever handling components. Failure to comply may result in damage to equipment. • Damage to RFI/EMI contact strip may occur. Do not slide cover off of housing. Pick cover straight up. 1. Attach ESD grounding strap to wrist and ground to ensure ESD protection. 2. Remove 20 screws (1), 20 flat washers (2), top cover assembly (3), and/or bottom cover (4) from PDIU housing (5). There are 20 screws and flat washers on each cover. 3. Remove preformed packing (6) from groove in top and preformed packing (6) from groove in bottom of PDIU housing (5). Discard preformed packing. Clean grooves using wiping rag. Change 1 1 2 3 5 4 2 1 6 6