TO 1-1-700 - Robins Air Force Base
TO 1-1-700 - Robins Air Force Base
TO 1-1-700 - Robins Air Force Base
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<strong>TO</strong> 1-1-<strong>700</strong><br />
MIL-DTL-81706 (ALODINE), COATING, CHEMICAL<br />
CONVERSION 23<br />
MIL-DTL-53022, PRIMER, EPOXY, CORROSION<br />
INHIBITING, LEAD AND CHROMATE FREE 34<br />
NOTE<br />
The initial chromate surface treatment is required on<br />
these surfaces and may be applied by using MIL-<br />
DTL-81706, Class 1A, Form VI, Method D Touch-N-<br />
Prep (TNP) pens per procedures in Section II of<br />
Chapter 5 in <strong>TO</strong> 1-1-691.<br />
7.7.5 Tin on Ferrous <strong>Base</strong> Metal. When complete refinishing<br />
is required due to extensive corrosion or loss of film adhesion,<br />
disassemble the equipment and/or structure as far as<br />
practical and remove the defective paint system per procedures<br />
in Chapter 2 of <strong>TO</strong> 1-1-8.<br />
7.7.5.1 . If surface, when reassembled in its normal operating<br />
condition will be exposed to direct view, the following procedures<br />
will be used:<br />
a. For DEPOT LEVEL maintenance only, strip old plating<br />
from equipment or part to the base metal per procedures<br />
in <strong>TO</strong> 42C2-1-7. For FIELD LEVEL maintenance and<br />
when it is impractical to strip the plating due to size,<br />
shape, or connection to other parts, lightly sand areas<br />
where corrosion is noted to remove corrosion products<br />
of the plating as well as the base metal per procedures in<br />
Chapter 5 of <strong>TO</strong> 1-1-691.<br />
b. For DEPOT LEVEL maintenance, reapply tin plating by<br />
the hot dip method per ASTM B-339, Grade A to a<br />
minimum thickness of 0.5 mils (0.0005 inch) or by electroplating<br />
per ASTM B-545 to a minimum thickness of<br />
0.3 mils (0.0003 inch) using procedures in <strong>TO</strong> 42C2-1-<br />
7, and treat the plated surface with the metal conditioner<br />
described in paragraph 7.8 of this manual.<br />
MIL-PRF-23377, TYPE I & II, PRIMER, EPOXY<br />
CHEMICAL AND SOLVENT RESISTANT 38<br />
MIL-PRF-85582, PRIMER, EPOXY, WATERBORNE 69<br />
MIL-P-53030, PRIMER, EPOXY, WATER REDUCIBLE,<br />
LEAD, CHROME FREE 35<br />
c. Prime the plated surfaces with one coat of MIL-PRF-<br />
23377, Type I, Class C or MIL-PRF-85582, Type I,<br />
Class C2 epoxy primers to a DFT of 0.6 to 0.9 mils<br />
(0.0006 to 0.0009 inch) or MIL-DTL-53022 or MIL-P-<br />
53030 epoxy primers to a DFT of 0.9 to 1.1 mils<br />
(0.0009 to 0.0011 inch), as applicable, from the equipment<br />
system specific technical data. Application shall<br />
be per procedures in Chapters 4, 5, and 6 of <strong>TO</strong> 1-1-8.<br />
MIL-PRF-85285, COATING POLYURETHANE, HIGH<br />
SOLIDS 50<br />
MIL-DTL-64159, COATING, POLYURETHANE,<br />
CHEMICAL RESISTANT, WATERBORNE 24<br />
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 />
7.7.5.2 . If the surface is not exposed to view in its normal<br />
operating condition, except while under repair, no further finish<br />
over plated surfaces will be required. However, plating<br />
thickness shall be a minimum of 0.5 mils (0.0005 inch) for hot<br />
dip and 0.3 mils (0.0003 inch) for electroplate.<br />
7.7.5.3 . 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 />
Change 4 7-31