TM 55-1930-209-14&P-19 Table 2-4.  Preventive Maintenance Checks and Services for Seawater System (Continued) B - Before D - Daily Q -  Quarterly D - During W - Weekly S -  Semiannually A - After M - Monthly A -  Annually INTERVAL ITEM PROCEDURES EQUIPMENT ITEM TO BE CHECK FOR AND HAVE IS NOT READY/ NO. INSPECTED REPAIRED OR ADJUSTED AVAILABLE IF B   D   A   D  W  M   Q   S   A AS NECESSARY    d. Check for loose or missing securements Securements and fasteners.  Tighten and replace as and/or fasteners necessary. loose or missing. 2 Wiring a. Check wiring for loose connections and Cables frayed. frayed cables.  Secure as necessary. Repair or replace damaged cables using insulated tools. b. Visually check wiring for loose connec- Connections tions.  If sparks are visible, immediately loose. stop operation and report to shift leader or bargemaster. 3    Seawater Strainer a. Ensure that seawater strainer baskets (void 2 port and starboard) are clean and properly installed. b. Change flow, remove and clean, or replace as follows: 1) To change flow: Loosen diverter plug locking flange by turning locking T-bolt handle/ handlewheel counterclockwise. Turn handle toward clean basket until it stops. CAUTION Never operate strainer with diverter plug unseated.  Sediment may collect under plug and prevent a tight seal causing damage to equipment. Tighten locking flange by turning locking T-bolt handle/handlewheel clockwise to seat diverter plug.  Do not overtighten. 2) To remove and clean seawater basket: Loosen yoke screw until yoke swings free. 2-11