6-11. Protective Finish

APPENDIX A REFERENCES - TM-5-4930-227-14_175

TM-5-4930-227-14 Lubricating and Servicing Unit: Power Operated Trailer Mounted 15 CFM Compressor Reciprocating Gasoline Engine Driven Manual
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6-11 3. Wear rubber boots. 4. Use cotton waste for cleaning pur- poses. Other material may generate static elec- tricity. (4) Preparation of equipment: (a) Completely drain each fuel tank or fuel tank compartment, all piping, pumps, meters, filters, and segregators, as applicable. (b) Remove all accessory items, such as gages and floats, which might entrap fuel. (c) Close or seal all drains (it may be necessary to locally fabricate covers for some types of drains). (d) Fill fuel tank and overflow for five minutes with cold water. (e) Drain fuel tank completely. (f) Close or seal drains. Caution: Insufficient amount of chemical will result in an incomplete purging. Accurate com- putations of amount of chemical to be added must be made prior to the purging. Once purging has begun, do not stop until process is complete. (g) For each 100 gallon capacity, add 40 fluid ounces to the fuel tank. (This is equivalent to 8 fluid ounces of concentrate for a 20-gallon fuel tank). (h) Fill fuel tank to not overflow. TM 5-4930-227-14 top with water. Do (i) Insert air line into fuel tank filler neck opening and agitate solution with 3 to 5 psi of air for five minutes. Frequently move air hose around in tanks, covering as much area as possi- ble, especially near tie bottom and around baffles. (j) Remove air line and drain solution from fuel tank. (k) Fill fuel tank and overflow for five minutes with cold water or until water is clear. (1) Drain fuel tank completely. (m) Conduct a combustible vapor test reading to determine if fuel tank is safe to repair, clean, or paint, store or change material. If com- bustible vapor test reading indicates tank is not safe, repeat procedures as cited in h through m, above. 6-11. Protective Finish All normally painted exterior surfaces of the tank must be protected by enamel at all times. A prim- er and semi-gloss enamel shall be used. The primer should conform to specification TT-P- 666, and the enamel to specification TT-E-529. Use standard Army olive drabcolor 2430. Refer to TM 9-231 for general instructions.

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