TO 1-1-700 - Robins Air Force Base

TO 1-1-700
7.7.6.3 Where only partial refinishing (touch-up) is required
for a few small scratches, nicks, or spots where corrosion was
removed on painted surfaces, the following procedure shall be
used:
a. Scuff sand and feather out painted edges and all corroded
or scratched surfaces to be refinished per maintenance
painting and touch-up procedures in Chapter 5 of
TO 1-1-8.
b. Clean the entire surface to be touched-up of all dust,
dirt, oil, and grease by solvent wiping per procedures in
Chapter 3 of TO 1-1-8 prior to priming. Apply one coat
of the same primers specified in paragraph 7.7.6.1 step c
to all surfaces to be touched-up (both those exposed and
unexposed to direct view in normal operating conditions)
using maintenance painting and touch-up procedures
in Chapter 5 of TO 1-1-8.
c. If surfaces are exposed to direct view in normal operating
conditions, apply one coat of the same topcoats
specified in paragraph 7.7.6.1 step e over the primer
using maintenance painting and touch-up procedures in
Chapter 5 of TO 1-1-8. Surfaces not exposed to direct
view require no topcoat.
7.7.7 Nickel on Copper and Copper Base Alloys. When
complete refinishing is required due to extensive corrosion or
loss of film adhesion, disassemble the equipment and/or
structure as far as practical. Remove the defective paint system
per procedures in Chapter 2 of TO 1-1-8.
7.7.7.1 . If surface, when assembled in its normal operating
condition, will be exposed to direct view, use the following
procedure:
a. For DEPOT LEVEL maintenance only, strip old plating
from equipment or part to the base metal per procedures
in TO 42C2-1-7. For FIELD LEVEL maintenance and
when it is impractical to strip the plating due to size,
shape, or connection to other parts, lightly sand areas
where corrosion is noted to remove corrosion products
of the plating as well as the base metal per procedures in
Chapter 5 of TO 1-1-691.
b. For DEPOT LEVEL maintenance only, reapply nickel
plating per SAE AMS-QQ-N-290 (QQ-N-290) to a minimum
thickness of 0.5 mils (0.0005 inch) using procedures
in TO 42C2-1-7.
NOTE
For DEPOT LEVEL maintenance, touch-up of small
areas of nickel plating may be accomplished by brush
plating per MIL-STD-8651 using procedures in TO
42C2-1-7 in lieu of complete stripping and replating.
c. Treat the surface with the metal conditioner described in
paragraph 7.8 of this manual.
MIL-PRF-23377, TYPE I & II, PRIMER, EPOXY
CHEMICAL AND SOLVENT RESISTANT 38
MIL-PRF-85582, PRIMER, EPOXY, WATERBORNE 69
MIL-DTL-53022, PRIMER, EPOXY, CORROSION
INHIBITING, LEAD AND CHROMATE FREE 34
MIL-P-53030, PRIMER, EPOXY, WATER REDUCIBLE,
LEAD, CHROME FREE 35
d. Prime the plated surfaces with one coat of MIL-PRF-
23377, Type I, Class C or MIL-PRF-85582, Type I,
Class C2 epoxy primers to a DFT of 0.6 to 0.9 mils
(0.0006 to 0.0009 inch) or MIL-DTL-53022 or MIL-P-
53030 epoxy primers to a DFT of 0.9 to 1.1 mils
(0.0009 to 0.0011 inch), as applicable, from the equipment
system specific technical data. Application shall
be per procedures in Chapters 4, 5, and 6 of TO 1-1-8.
MIL-PRF-85285, COATING POLYURETHANE, HIGH
SOLIDS 50
MIL-DTL-64159, COATING, POLYURETHANE,
CHEMICAL RESISTANT, WATERBORNE 24
e. Apply two coats of either MIL-PRF-85285 standard
polyurethane coating or MIL-DTL-64159 waterborne
CARC polyurethane coating to a DFT of 1.8 to 3.2 mils
(0.0018 to 0.0032 inch) over the primer per procedures
in Chapters 4, 5, and 6 of TO 1-1-8. The color and gloss
shall match the existing coating system as specified in
equipment system specific technical data or as otherwise
directed by the equipment SPM.
Change 4 7-33