Section III. Operating instructions - TM-55-1930-209-14P-1

Table 13-3. ROWPU System Valves (continued)

TM-55-1930-209-14P-1 Tow Bar Assembly Aircraft P/N AA1730 1251 NSN 1730-00-967-9556 Manual
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TM 55-1930-209-14&P-1 b. Before operating any ROWPU system, check system for damage and perform following before operation checks: (1) Wipe components dean, especially pressure gauges, flowmeters, indicators, and control panels. (2) Check for leaks, paying special attention to all joints, valves, fittings, and piping. Report uncorrectable leaks to shift leaders so repairs can be made. (3) Check for physical damage and broken welds, especially to pressure gauges, flowmeters, indicators and control panels. Notify shift leader of any damage affecting normal operations. (4) Check for loose or missing securements and fasteners. Tighten or replace as necessary. (5) Check wiring for loose connections and frayed cables. Tighten or replace as necessary. (6) Make sure chemical metering pump hoses are properly connected to pumps and drums. Check tubing and connections for leaks and cracks. (7) Make sure coagulant and inhibitor drums contain at least 2 to 3 gallons of liquid. If not, replace drums according to paragraph 4-14.1.3 in TM 55-1930-209-14&P-3. (8) Make sure membrane cleaning agent (Hydrakleen-20) drums are full. If not, replace drums according to paragraph 4-14.4.3 in TM 55-1930-209-14&P-3. (9) Make sure media filters are ready for normal operations. If necessary, backwash and flush filters according to paragraph 4-14.2 in TM 55-1930-209-14& P-3. (10) Make sure RO pressure tube block membranes are ready for normal operations. If necessary, clean and flush membranes according to paragraph 4-14.4 in TM 55-1930-209-14& P-3. (11) Make sure cartridge filter is ready for normal operations. If necessary, change cartridge cage assembly according to paragraph 4-14.1.1 in TM 55-1930-209-14 & P-3. (12) Check diesel-driven HP pump as follows: (a) Check engine crankcase oil level (Figure 13-13). If necessary, add oil (OE/HDO-15/40) until oil level is between FULL and ADD on dipstick. (b) Check pump lubricant level in sight glass (Figure 13-13). If necessary, unscrew oil breather and add Mobil Delvac, or equivalent, oil until oil level is between MAX and MIN marks on oil level gauge. (c) Check power takeoff oil level (Figure 13-13). If necessary, add oil. WARNING At operating temperatures, engine coolant is hot and under pressure. It also contains alkaline materials harmful to eyes and skin. To avoid personal Injury, check coolant level only when engine is stopped and radiator cap is cool enough to be touched with a bare hand. Should engine coolant come in contact with eyes or skin, immediately flush affected area with clean water and seek medical assistance If necessary. (d) Check coolant level. When engine is cool, slowly open coolant tank filler cap. Inspect filler cap gasket. Replace if damaged. Add coolant if necessary and install filler cap. (e) Check air cleaner condition. If service indicator red piston is locked in raised position, service the air cleaner. Indicator is in lower comer of air cleaner on the side next to the engine. For servicing instructions, see TM 55-1930-209-14& P-3. (f) Check fuel oil day tank supply by checking liquid level indicator. If necessary, fill day tank according to TM 55-1930-209-14& P-8. 13-23

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