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CLASS I ODSs-continued
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TB-43-0135 Environmentally Safe Substances for use with Communications-Electronics Equipment Manual
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SECTION II. REVISED CLEANING PROCEDURES


TB 43-0135
CHAPTER 3
MAINTENANCE CLEANING PROCEDURES AND ALTERNATIVE
SOLVENTS SELECTION GUIDANCE
Section I. Obsolete Procedures
3-1.
General Information on obsolete procedures
.
Solvents such as 1,1,1 trichloroethane and tichlorotrifluoroethane were generally considered "Universal Solvents" They
were very effective, non-flammable, rapid drying and were used in numerous processes and on many types of materials.
There is no single "drop in" replacement for these solvents. There are many alternatives, each of which has different
qualities and effectiveness. Several alternative materials may be required to perform all of the functions that were
previously by one of the "Universal Solvents" in the past. The selection of an alternative should include a review of the
Material Safety Data Sheet (MSDS) information for that material, with attention to Flammability Ratings, Flash Point
Temperatures and Safety Information.
3-2.  For your information, following are typical examples of obsolete cleaning procedures which reference the use of
ODS solvents.
a. Remove grease, fungus, and ground-in dirt from surfaces with a clean, lint-free cloth dampened (not wet) with
trichlorotrifluoroethane.;
b. Clean solder connections using trichloroethane. Blow dry.;
c.  Use dry, clean, it-free cloth or brush to remove dust or dirt. If needed, moisten cloth or brush with
tricorotrifluoroethane. After cleaning, wipe with clean dry cloth.;
d. To remove grease, fungus, or corrosion, use a cloth dampened in Freon TE;
e. Tape Drive Tape Head Cleaning Method - Soak a lint-less cotton swab with Freon TF or tape head cleaner. Clean
the tape head using the cotton swab.
3-3. Following are typical examples of Aqueous Cleaning procedures found in Technical Manuals, also included for your
information.
NOTE
These procedures are not obsolete, however, this TB contains expanded
recommendations for Aqueous cleaning procedures
a. Dampen cloth with water, using liquid detergent, if necessary.;
b. Wash area with strong solution of detergent. Rinse area with warm or hot water Insure that area is dry before
applying power to assembly.;
c.  Clean meter faces and control panels with water and a mild detergent.;
3-1


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