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TO 1-1-700 - Robins Air Force Base

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<strong>TO</strong> 1-1-<strong>700</strong><br />

either case, MIL-PRF-26915 waterborne zinc rich<br />

primer may be applied to steel surfaces to a DFT of 2.0<br />

to 3.0 mils (0.0020 to 0.0030 inch) for one coat or 4.0 to<br />

6.0 mils (0.004 to 0.006 inch) in lieu of the epoxy primers.<br />

Application shall be per procedures in Chapters 4,<br />

5, and 6 of <strong>TO</strong> 1-1-8.<br />

d. d.Apply two coats of either MIL-PRF-85285 standard<br />

polyurethane coating or MIL-DTL-64159 waterborne<br />

CARC polyurethane coating to a DFT of 1.8 to 3.2 mils<br />

(0.0018 to 0.0032 inch) over the primer per procedures<br />

in Chapters 4, 5, and 6 of <strong>TO</strong> 1-1-8. The color and gloss<br />

shall match the existing coating system as specified in<br />

equipment system specific technical data or as otherwise<br />

directed by the equipment SPM.<br />

7.7.1.1.1 . Where only partial refinishing (touch-up) is<br />

required for a few small scratches, nicks, or spots where corrosion<br />

was removed on painted surfaces, the following procedure<br />

shall be used:<br />

a. Scuff sand and feather out painted edges and all corroded<br />

or scratched surfaces to be refinished per maintenance<br />

painting and touch-up procedures in Chapter 5 of<br />

<strong>TO</strong> 1-1-8.<br />

b. Clean the entire surface to be touched-up of all dust,<br />

dirt, oil, and grease by solvent wiping per procedures in<br />

Chapter 3 of <strong>TO</strong> 1-1-8 prior to priming and top coating.<br />

Apply the same primers and topcoats noted in paragraph<br />

7.7.1.1 using maintenance painting and touch-up procedures<br />

in Chapter 5 of <strong>TO</strong> 1-1-8.<br />

NOTE<br />

In lieu of the phosphate treatment, steel surfaces may<br />

be primed directly with MIL-PRF-26915 waterborne<br />

zinc rich primer applied per procedures in <strong>TO</strong> 1-1-8.<br />

MIL-DTL-53022, PRIMER, EPOXY, CORROSION<br />

INHIBITING, LEAD AND CHROMATE FREE 34<br />

MIL-P-53030, PRIMER, EPOXY, WATER REDUCIBLE,<br />

LEAD, CHROME FREE 35<br />

MIL-PRF-23377, TYPE I & II, PRIMER, EPOXY<br />

CHEMICAL AND SOLVENT RESISTANT 38<br />

MIL-PRF-85582, PRIMER, EPOXY, WATERBORNE 69<br />

7.7.1.2 . If surface, when reassembled in its normal operating<br />

condition will not be exposed to direct view except while<br />

under repair, the following procedure shall be used:<br />

a. Clean surface of dirt, oil, grease, welding flux, and all<br />

loose scale per procedures in Chapter 3 of <strong>TO</strong> 1-1-691.<br />

MIL-C-10578, COMPOUND, CORROSION REMOVING<br />

AND METAL CONDITIONING 20<br />

b. For DEPOT LEVEL maintenance, surfaces of the disassembled<br />

steel parts shall be given a TT-C-490, Type I<br />

zinc phosphate treatment per procedures in <strong>TO</strong> 42C2-1-<br />

7 when treatment tanks are available. For FIELD<br />

LEVEL maintenance and when this treatment is impractical<br />

due to unavailability or part size, surfaces shall be<br />

treated with an appropriate type of MIL-C-10578 metal<br />

conditioner per procedures in Chapter 5 of <strong>TO</strong> 1-1-691.<br />

MIL-PRF-26915, PRIMER, ZINC RICH, WATERBORNE 39<br />

c. Properly prepare the surface by solvent wiping per procedures<br />

in Chapter 3 of <strong>TO</strong> 1-1-8. Apply one coat of<br />

MIL-DTL-53022 (solvent type) or MIL-P-53030<br />

(waterborne) epoxy primer to a dry film thickness<br />

(DFT) of 0.9 to 1.1 mils (0.0009 to 0.0011 inch) to<br />

surfaces that require a CARC coating; or apply one coat<br />

of MIL-PRF-23377, Type I, Class A (solvent type) or<br />

MIL-PRF-85582, Type I, Class C2 (waterborne) epoxy<br />

primer to a DFT of 0.6 to 0.9 mils (0.0006 to 0.0009<br />

inch) to surfaces that do not require a CARC coating. In<br />

either case, MIL-PRF-26915 waterborne zinc rich<br />

primer may be applied to steel surfaces to a DFT of 2.0<br />

to 3.0 mils (0.0020 to 0.0030 inch) for one coat or 4.0 to<br />

6.0 mils (0.004 to 0.006 inch) in lieu of the epoxy primers.<br />

Application shall be per procedures in Chapters 4,<br />

5, and 6 of <strong>TO</strong> 1-1-8. No topcoat is required over the<br />

primer.<br />

7-26 Change 4

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