TO 1-1-700 - Robins Air Force Base

TO 1-1-700
MIL-PRF-85285, COATING, POLYURETHANE, HIGH
SOLIDS 50
MIL-PRF-23377, TYPE I & II, PRIMER, EPOXY CHEMI-
CAL AND SOLVENT RESISTANT 38
MIL-DTL-64159, COATING, POLYURETHANE, CHEMI-
CAL RESISTANT, WATERBORNE 24
d. 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.
7.7.2.2 If surface, when reassembled in its normal operating
condition will not be exposed to direct view except while
under repair, the following procedure shall be used:
a. For DEPOT LEVEL maintenance only, new/replacement
aluminum alloy parts shall be anodized per MIL-
A-8625, Type II, Class I (dichromate or duplex sealed)
using procedures in TO 42C2-1-7.
MIL-DTL-81706 (ALODINE), COATING, CHEMICAL
CONVERSION 23
b. For both DEPOT and FIELD LEVEL maintenance, surfaces
of repaired/refurbished aluminum alloy parts shall
be treated to repair damaged areas in the anodize coating
due to nicks, scratches, and corrosion removal with
MIL-DTL-81706/MIL-DTL-5541, Class 1A chromate
conversion coating per procedures in Section II of
Chapter 5 in TO 1-1-691. For small areas, use MIL-
DTL-81706, Class 1A, Form VI, Method D Touch-N-
Prep (TNP) pens per procedures in Section II of
Chapter 5 in TO 1-1-691.
MIL-PRF-85582, PRIMER, EPOXY, WATERBORNE 69
c. Surfaces finished per “step a.” need no further finishing.
Surfaces finished per “step b.” will be primed with one
coat of either MIL-PRF-23377, Type I, Class C (solvent
type) or MIL-PRF-85582, Type I, Class C2 (waterborne)
epoxy primer to a DFT of 0.6 and 0.9 mils
(0.0006 to 0.0009 inch). Application shall be per procedures
in Chapters 4, 5, and 6 of TO 1-1-8.
7.7.2.3 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 7.7.2.1 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 7.7.2.1 step d over the primer
using maintenance painting and touch-up procedures in
Chapter 5 of TO 1-1-8.
7.7.3 Magnesium. The entire part, exposed or unexposed,
shall be replaced with a new magnesium part when complete
refinishing is required due to extensive corrosion along with
loss of paint film adhesion. For treatment after removal of
mild to moderate corrosion and touch-up of the paint system
the following procedure shall be used:
7-28 Change 1