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 TB 740-97-4
CHAPTER 2
GENERAL INSTRUCTIONS
5. General. The following general instructions cover disassembly, matchmarking, lubrication, cleaning, drying, painting, marking,
precautionary and safety measures and the use of contact preservatives and other materials involved when preserving vessels and
basic issue items. Further instructions involving each detailed process may be found in the publications mentioned in the applicable
paragraphs.
6. Disassembly and Matchmarking. Disassembly will be the minimum necessary to safeguard parts known to be subject to
damage or loss and to allow ventilation. Bolts, nuts, and washers will be replaced on one of the mating parts and secured. Openings
made by removal of components or to provide ventilation will be covered with standard gauge mesh aluminum insect screen to
prevent the entry of dirt, debris, insects, rodents, snakes, etc. Parts removed during disassembly will be preserved, packaged,
identified and stowed within compartments. Removed parts and mating parts remaining on the basic unit will be matchmarked
identically, except where mating of parts is apparent, by stenciled letters or numerals with gasoline soluble paint conforming to MIL-
P13983. Parts which are too small to accommodate stencil marking will be identified by using metal tags, if available, or cloth
shipping tags conforming to FED-UU-T-81, type A. Securely attach the tags to the parts in such a manner as to prevent damage to
the preservation or to the parts being identified. The marked cloth shipping tag will be waterproofed in accordance with MILSTD-129.
7. Lubrication. After cleaning, but prior to preserving, each vessel will be lubricated in accordance with the applicable lubrication
order except those areas requiring the application of a contact preservative.
8. Cleaning and Drying. a. Cleaning. Equipment and components will be cleaned using the most applicable cleaning process of
MIL-P-116. When possible the entire item will be cleaned without interruption. However, when interruptions are necessary,
temporary protection will be provided to the areas that have been cleaned.
(1) Special cleaning. Galley gear, mess gear, potable water containers and dispensers, refrigerators, and other items
likely to come in contact with food and beverages must not be cleaned with any toxic material Petroleum solvents are toxic If it is
necessary to clean food handling or potable water equipment, the items will be cleaned with soap and water to which a water-soluble
compound, such as sal soda, may be added. Thorough rinsing with potable water will then be accomplished.
(2) Field cleaning. Processes C-1, C-3, C-14 and C-15 normally are used in field cleaning operations. Examples of
mechanical means employed in the field application of process C-1 are buffing, sanding, and scratch brushing. Examples of
chemical means are petroleum solvents and alkaline compounds.
(3) Shop cleaning operations. Cleaning operations performed within a building normally are accomplished by processes
C-1, C-3, C-5, C-7, C-9, C-14, C-15 and C-18.
(4) Fingerprint removal. Prior to preservation, provide additional cleaning to critical and precision machined surfaces by
applying process C-5 to remove fingerprints and perspiration residues.
CAUTION
DO NOT HANDLE PARTS WITH BARE HANDS AFTER CLEANING HAS BEEN ACCOMPLISHED.
(5) Precautionary measures. Protect items made of rubber, such as hose, and electrical insulation from petroleum
solvents by shielding with greaseproof barrier material or other suitable material. Protect all items subject to damage by steam
cleaning, such as generators, starters, magnetos, and distributors, by shielding with waterproof barrier material. When impracticable
to properly shield the items, remove during the cleaning operations.
b. Drying. Immediately after cleaning, items will be thoroughly dried using the most applicable procedure of MIL-P-116. Air
lines supplying compressed air for drying metal surfaces and for spraying paint or preservatives will be equipped with oil and water
separators. These separators will be located in the air lines approximately 25 feet from the discharge end of the hose. Dram the
separator and the air compressor storage tank at frequent intervals by opening the drain cocks, allowing any oil and water to drain
from the units
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