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 1–21 1–23. PURGE LRU CONTINUED b. PURGING NOTE There are three components included in the AFCS that require purging. Purging procedures are identical for each. Locations of the outlet screw and inlet valve for each LRU are depicted in Figure 1–2. 1. Remove outlet screw (12) from AFCS component (13). 2. Remove cap (14) from inlet valve (15) on AFCS component (13) and connect free end of purging hose (8) to inlet valve. 3. Rotate regulator valve (9) slowly clockwise until low pressure gauge (1 1) indicates 5 psig. 4. Purge AFCS component for 5 minutes. 5. Rotate regulator valve (9) to closed position. 6. Install outlet screw (12). 7. Remove purging hose (8) from inlet valve (15) and install cap (14) on inlet valve. 8. Close nitrogen tank outlet valve (2) by turning valve handle (3) to closed position. 2 3 9 11 8 12 14 15 13