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 />
CHAPTER 7<br />
PREVENTATIVE MAINTENANCE AND REFINISHING ON<br />
STRUCTURAL COMPONENTS<br />
7.1 PURPOSE.<br />
This technical manual is intended for use by depot and field<br />
level maintenance personnel in the requirement and determination<br />
of the quality and acceptability of work performed for<br />
cleaning, corrosion prevention and control, and repair of<br />
Ground Communication, Electronics, and Meteorological<br />
Equipment (C-E-M) and its protective shelters, vans, and<br />
radomes.<br />
7.1.1 Interpretation. Nothing in this technical manual shall<br />
be interpreted as specifying the extent of repair or refinish<br />
except when noted defects affect the operational characteristics<br />
or tolerances of a piece of equipment.<br />
7.1.2 Technical Manuals. All activities involved with<br />
cleaning, corrosion prevention and control, and repair of C-E-<br />
M equipment or inspection and/or testing of the repaired or<br />
refurbished equipment shall use this technical manual in conjunction<br />
with <strong>TO</strong>s 1-1-8, 1-1-689-series, 1-1-691, and equipment<br />
system specific maintenance manuals as a guide for<br />
cleaning, corrosion prevention and control, and refinishing/<br />
touchup operations.<br />
7.2 CORROSION PROTECTION.<br />
All structural metals will corrode to some extent in a natural<br />
environment. When a metal corrodes, the metal atoms lose<br />
electrons and become positively charged metal ions in the<br />
electrolyte. In solution, the positively charged metal ions can<br />
combine with negatively charged ions to form corrosion products,<br />
such as metallic chlorides, oxides, hydroxides, sulfides,<br />
etc.<br />
7.3 PREVENTATIVE MAINTENANCE.<br />
As directed by AFI 21-116, the prevention and control of corrosion<br />
communications equipment is a command responsibility.<br />
Each command must place special emphasis on the<br />
importance of the corrosion control program and lend its full<br />
support to ensure that control receives sufficient priority to be<br />
accomplished along with other maintenance.<br />
7.3.1 Cleaning. Maintain the exterior and interior of equipment<br />
and components such that they will be free of grease,<br />
dirt, dust, corrosion, fungus, mold, and any other extraneous/<br />
foreign matter. Use only those cleaning processes that have no<br />
harmful or damaging effect on the equipment being cleaned.<br />
Observe all the warnings, cautions, and notes listed below as<br />
well as in other published specific cleaning procedures during<br />
all cleaning operations.<br />
• Do not use unauthorized cleaners. Although other<br />
commercial cleaners may appear to perform as<br />
well as, or better than approved products, these<br />
materials may be corrosive to metal alloys used in<br />
C-E-M equipment. They can accelerate degradation<br />
of non-metallic materials causing material<br />
failures, which may result in corrosion of surrounding<br />
metals, electrical shorts, crazing, and/or<br />
mechanical/electrical failure.<br />
• Ozone depleting substances (ODS) such as, but not<br />
limited to, 1.1.1 trichloroethane (MIL-T-81533)<br />
and trichlorotrifluoroethane (MIL-C-81302) solvents,<br />
as well as products containing them, are still<br />
used in some maintenance processes. Alternate<br />
materials continue to be identified; and wherever<br />
possible, specifications are being changed to eliminate<br />
their use automatically. Some products that<br />
have been reformulated are now flammable, so pay<br />
close attention to all CAUTION/WARNING labels<br />
on solvents and solvent-based products as well as<br />
in their MSDSs.<br />
Figure 7-1. Corroded Hardware<br />
7-1